taxonID	type	description	language	source
03CACF3D1849021FF597FD72B3517882.taxon	description	urn: lsid: zoobank. org: act: 46 A 8 FACE-B 1 DF- 43 B 6 - BC 45 - 92 D 4 B 431 F 12 B	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1849021FF597FD72B3517882.taxon	type_taxon	Type species Uaica uatuma gen. et sp. nov. by original designation.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1849021FF597FD72B3517882.taxon	diagnosis	Diagnosis Species of Uaica gen. nov. resemble those of the genera Caayguara Rheims, 2010, Nungara Pinto & Rheims, 2016, Sadala Simon, 1880 and Meri Rheims & Jäger, 2022 in having the combination of intermarginal denticles in the chelicerae (Fig. 1 A−B) and short-toothed female palpal claws (Fig. 2 E). They resemble species of Caayguara in having only two pairs of ventral spines on tibiae I−II but are distinguished in having 3 − 5 escort setae on the chelicerae (Fig. 1 A) (only one in Caayguara), a single, distal RTA in the male palps (Figs 5 C, 9 C, 11 C, 14 C) and an epigynal pocket in the female epigyne (Figs 5 D, 7 A, 14 D) (RTA medial, complex, with projections and epigynal pocket absent in Caayguara). They resemble species of Nungara, Sadala and Meri by the number of escort setae in the chelicerae (between 3 − 10) (Fig. 1 A), the male palps with a single, distal RTA (Figs 5 C, 9 C, 11 C, 14 C) and the female epigyne with a median septum bearing an epigynal pocket or a triangular projection (Figs 5 D, 7 A, 14 D). They are distinguished from the latter genera by the presence of only two pairs of ventral spines on tibiae I−II. Additionally, they are distinguished from Sadala by the female epigyne with a median septum bearing a triangular epigynal pocket (Figs 5 D, 7 A, 14 D) (triangular projection in Sadala), from Nungara by the long and median conductor in the male palp (Figs 5 B, 9 B, 11 B, 14 B) (apical and guttershaped in Nungara) and from Meri by the embolus smooth and slender, without projections (Figs 5 B, 9 B, 11 B, 14 B) (with projections and membranous areas bearing needle-like extensions in Meri).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1849021FF597FD72B3517882.taxon	etymology	Etymology The generic epithet refers to a character in a folk tale of the Karajá and Apinaye peoples from central and northern Amazonia. According to the story, Uaica was a bullied boy who sought refuge in the forest and, because of the kindness in his heart, received the gift of healing from Sinaa, the Jaguar Man; gender is masculine; noun in apposition.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1849021FF597FD72B3517882.taxon	description	Description Total length of males 5.4 − 7.6, of females 5.9 − 10.8. Prosoma slightly longer than wide; cephalic region slightly higher than thoracic region, gradually flattening posteriorly; fovea conspicuous on posterior third of prosoma. Eight eyes arranged in two straight rows; AME larger than ALE and more distant from each other than from ALE; PME smaller than PLE and slightly more distant from each other than from laterals (e. g., Figs 3 A, 4 A, 10 A, 11 A). Clypeus low, less than AME diameter. Chelicerae longer than wide with three promarginal teeth, median one largest, and 4 − 5 retromarginal teeth, three similar sized, the rest smaller; intermarginal denticles present mostly at base of furrow. Between 3 − 5 escort setae at base of fang (Fig. 1 A – B). Labium slightly longer than wide. Endites slightly convergent, with dense scopulae on internal margin. Serrula with single row of denticles (Fig. 1 C). Sternum as long as wide, very slightly projected between coxae IV. Legs laterigrade (2143). Spination in males: femora I−III: p 1 - 1 - 1; d 0 - 1 - 1; r 1 - 1 - 1; femur IV: p 1 - 1 - 1; d 0 - 1 - 1; r 0 - 0 - 1; patellae I−II: p 1; r 1; tibiae I−II: p 1 - 0 - 1; d 1 - 0 - 1; r 1 - 0 - 1; v 2 - 2 - 0; tibiae III−IV: p 1 - 0 - 1; r 1 - 0 - 1; v 2 - 2 - 0; metatarsi I−III: p 1 - 1 - 0; r 1 - 1 - 0; v 2 - 2 - 0; metatarsus IV: p 1 - 1 - 1; r 1 - 1 - 0; v 2 - 2 - 0; palp: femur: p 0 - 0 - 1; d 0 - 1 - 2; r 0 - 0 - 1; patellae: p 1; r 1; tibiae: p 2 - 1 - 0; d 1 - 0 - 0; r 1 - 0 - 0. Spination in females as in males except tibiae I – II: d 0; metatarsi IV r 1 - 1 - 1. Trochanter I – IV with distal ventral margin deeply notched (Fig. 1 D). Metatarsi I – IV distally with dorsal trilobate membrane with median hook slightly larger than lateral projections (Fig. 1 E). Tarsi and anterior half of metatarsi scopulate. Trichobothria present on dorsal side of tibiae, metatarsi and tarsi, arranged in two or more rows on tarsi and one on metatarsi. Bothrium with dorsal plate with one distal grove, projected over smooth basal plate (Fig. 1 F). Tarsal organ capsulate with slightly oval opening (Fig. 2 A), located dorsally on distal third of leg metatarsi. Leg tarsi with pair of pectinate claws with 12 – 15 very slightly curved teeth and claw tufts (Fig. 2 B – D). Female palpal claw with 4 – 5 short, slightly curved teeth (Fig. 2 E). Opisthosoma oval, longer than wide. Male epiandrium bearing epiandrous spigots in small, scattered bunches (Fig. 2 F). Six spinnerets: anterior lateral spinnerets contiguous, conical and bi-segmented. Anterior median spinnerets short and truncated. Posterior lateral spinnerets conical and bi-segmented. Male palp: tibia elongate, slightly shorter than cymbium with three prolateral spines, one dorsal spine and one retrolateral spine; ventral tibial apophysis absent; RTA single, inserted distally on tibia (e. g., Figs 3 C, 3 E, 12 C, 12 E); cymbium elongate with large oval alveolus and elongate dorsal scopula; subtegulum smooth, slightly prolateral; tegulum oval, smooth or indented at base of E; C hyaline, same width throughout, inserted medially on tegulum; E without projections, slender, tapering towards tip or filiform, arising from tegulum between 8 − 9 o’clock or between 5 − 6 o’clock (e. g., Figs 3 D, 8 D, 10 D, 12 D). Female epigyne: EF as long as wide or slightly longer than wide; muscle attachment bands absent; LL smooth, with no projections, partially covering MS; MS bearing triangular EP and lateral sclerotized rims (Figs 4 C, 6 C, 13 C). Vulva: IDS running anteriorly as double helix; GP arising from anterior most turn; spermathecae not differentiated; FD short and hook-shaped (Figs 4 D, 6 D, 13 D).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1849021FF597FD72B3517882.taxon	distribution	Distribution Northern Brazil, Amazonian region, states of Amazonas, Pará, Rondônia and Mato Grosso (Fig. 15).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18480215F54EF9C2B5047FF0.taxon	description	urn: lsid: zoobank. org: act: AC 981 FA 5 - D 12 C- 4769 - B 812 - 52286 AE 8 D 2 F 1 Figs 1 – 5, 15	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18480215F54EF9C2B5047FF0.taxon	diagnosis	Diagnosis Males of Uaica carapiranga gen. et sp. nov. resemble those of U. uatuma gen. et sp. nov. (Figs 12 C – E, 14 A – C) by the palps with a tegulum bearing an indentation at the base of the E, but are distinguished by the shorter E, same length as C (Figs 3 D, 4 B) (longer than C in U. uatuma) and by the shorter RTA, barely reaching the proximal margin of the cymbium (Figs 3 E, 5 C) (surpassing the proximal margin of the cymbium by almost half its length in U. uatuma). Females resemble those of U. juruena gen. et sp. nov. (Figs 6 C – D, 7) by the epigyne with MS shaped as an inverted Y, bearing median EP (MS elongate with anterior EP in U. juruena). They are distinguished from those of the latter species by the LL not touching posteriorly, by the EP roughly as wide as long (Figs 4 C, 5 D) and by the IDS loosely twisted with three turns (Figs 4 D, 5 E – F) (LL touching posteriorly, EP almost 3 × as long as wide and IDS tightly coiled with five turns in U. juruena). Additionally, it is distinguished from all congeners by having two GPs (Fig. 5 E – F) (only one in the other species).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18480215F54EF9C2B5047FF0.taxon	etymology	Etymology The specific epithet refers to the type locality of the holotype, in the region of Juruti, Pará; noun in apposition.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18480215F54EF9C2B5047FF0.taxon	materials_examined	Type material Holotype BRAZIL – Pará State • ♂; Juruti; Platô Carapiranga, Linha 168 E; 2.4728 º S, 56.2082 º W; 9 Feb. 2007; J. A. P. Barreiros leg.; MPEG 15063. Paratypes BRAZIL – Pará State, Juruti • 1 ♂; same data as for holotype; IBSP 344077 • 1 ♀; Platô Carapiranga, Acampamento Mutum; 2.5519 º S, 56.2247 º W; 11 Aug. 2010; N. S. Abrahim leg.; MPEG 30844 • 1 ♀; same data as for preceding; 12 Aug. 2010; B. V. B. Rodrigues leg; IBSP 344078 • 1 ♂; Platô Carapiranga, Acampamento Mutum; 1.6124 º S, 56.1942 º W; 27 May 2009; N. S. Abrahim leg.; MPEG 30713 • 1 ♀; Platô Carapiranga, Acampamento Mutum; 2.5550 º S, 56.2229 º W; 20 Aug. 2011; N. C. Bastos leg.; MPEG 30806 • 1 ♀; Beneficiamento, ponto 6; 2.5076 º S, 56.1776 º W; 13 May 2010; B. V. B. Rodrigues leg.; MPEG 30858 • 1 ♂, 1 ♀; Sítio Barroso; 2.4616 º S, 56.0032 º W; 8 Feb. 2007; J. A. P. Barreiros leg.; IBSP 344076. Other material examined BRAZIL – Pará State, Juruti • 1 ♂; Platô Carapiranga, Acampamento Mutum; 1.6124 º S, 56.1942 º W; 27 May 2009; N. S. Abrahim leg.; MPEG 30713 • 1 ♂; same data as for preceding; 26 May 2009; N. C. Bastos leg.; MPEG 30712 • 1 ♀; same data as for preceding; 27 May 2009; N. S. Abrahim leg.; MPEG 30718 • 1 ♀; same data as for preceding; 6 Aug. 2008; N. C. Bastos leg.; MPEG 30746 • 1 ♂; same data as for preceding; 20 May 2009; N. S. Abrahim leg.; MPEG 30705 • 1 ♂; same data as for preceding; 26 May 2009; N. S. Abrahim leg.; MPEG 30720 • 1 ♂; same data as for preceding; 6 Aug. 2008; N. F. Lo Man Hung leg.; MPEG 30728 • 1 ♂; same data as for preceding; 25 May 2009; N. C. Bastos leg.; MPEG 30723 • 1 ♀; same data as for preceding; 20 Nov. 2007; E. S. Santos leg.; MPEG 15054 • 1 ♂; same data as for preceding; 20 Nov. 2007; N. F. Lo Man Hung leg.; MPEG 15050 • 1 ♀; Sítio Barroso; 2.4616 º S, 56.0032 º W; 16 Nov. 2007; D. F. Candiani leg.; MPEG 15055 • 1 ♀; same data as for preceding; 11 Feb. 2007; N. F. Lo Man Hung leg.; MPEG 15058 • 1 ♂; same data as for preceding; 6 Jun. 2007; D. F. Candiani leg.; MPEG 15051 • 1 ♂; same data as for preceding; 8 Feb. 2007; J. A. P. Barreiros leg.; MPEG 15060 • 1 ♂; same data as for preceding; 11 Aug. 2006; D. F. Candiani leg.; MPEG 8567 • 1 ♂; Sítio 3 Irmãos; 2.4626 º S, 56.0142 º W; 12 Aug. 2008; N. F. Lo Man Hung leg.; MPEG 30729 • 1 ♂; same data as for preceding; 12 Aug. 2008; N. F. Lo Man Hung leg.; MPEG 30730 • 1 ♀; Sítio Barroso; 2.4643 º S, 56.0024 º W; 23 May 2009; N. F. Lo Man Hung leg.; MPEG 30716 • 1 ♀; same data as for preceding; 22 May 2009; N. F. Lo Man Hung leg.; MPEG 30708 • 1 ♂; same data as for preceding; 11 Feb. 2007; J. A. P. Barreiros leg.; MPEG 15061 • 1 ♀; same data as for preceding; 23 May 2009; N. C. Bastos leg.; MPEG 30715 • 1 ♂; same data as for preceding; 22 May 2009; N. C. Bastos leg.; MPEG 30709 • 1 ♀; same data as for preceding; 23 May 2009; N. F. Lo Man Hung leg.; MPEG 30719 • 1 ♂; same data as for preceding; 9 Feb. 2007; J. A. P. Barreiros leg.; MPEG 15059 • 1 ♀; same data as for preceding; 9 Aug. 2006; N. F. Lo Man Hung leg.; MPEG 8566 • 1 ♀; same data as for preceding; 9 Aug. 2006; N. F. Lo Man Hung leg.; MPEG 8571 • 1 ♂; same data as for preceding; 9 Feb. 2007; N. F. Lo Man Hung leg.; MPEG 15057 • 1 ♂; same data as for preceding; 8 Jun. 2007; N. F. Lo Man Hung leg.; MPEG 15056 • 1 ♀; same data as for preceding; 17 Nov. 2007; D. F. Candiani leg.; MPEG 15053 • 1 ♂; same data as for preceding; 9 Jun. 2007; D. F. Candiani leg.; MPEG 15049 • 1 ♂; same data as for preceding; 8 Jun. 2007; N. F. Lo Man Hung leg.; MPEG 15052 • 1 ♀; próximo à adutora, ALCOA; 2.4728 º S, 56.2082 º W; 18 Nov. 2007; N. F. Lo Man Hung leg.; MPEG 30725 • 1 ♀; Platô Carapiranga, Linha 168 E; 2.5071 º S, 56.1847 º W; 19 May 2009; N. C. Bastos leg.; MPEG 30721 • 1 ♂; same data as for preceding; 19 May 2009; N. F. Lo Man Hung leg.; MPEG 30722 • 1 ♂; Beneficiamento; 2.5076 º S, 56.1629 º W; 9 Aug. 2010; N. C. Bastos leg.; MPEG 30803 • 1 ♂; Beneficiamento, ponto 1; 2.5076 º S, 56.1776 º W; 7 Jan. 2012; N. C. Bastos leg.; MPEG 30843 • 1 ♀; same data as for preceding; 13 May 2010; N. F. Lo Man Hung leg.; MPEG 30853 • 1 ♂; same data as for preceding; 8 May 2010; B. V. B. Rodrigues leg.; MPEG 30866 • 1 ♂; same data as for preceding; 9 Aug. 2010; N. S. Abrahim leg.; MPEG 30830 • 1 ♀; 4 Jan. 2012; R. F. Saturnino leg.; MPEG 30828 • 1 ♀; Platô Carapiranga, Acampamento Mutum; 2.5519 º S, 56.2247 º W; 12 Aug. 2010; N. S. Abrahim leg.; MPEG 30829 • 1 ♂; same data as for preceding; 11 Aug. 2010; B. V. B. Rodrigues leg.; MPEG 30832 • 1 ♀; Platô do Rio Juruti; 2.5520 º S, 56.2184 º W; 7 Sep. 2002; D. D. Guimarães leg.; MPEG 30808 • 1 ♀; Platô Carapiranga, Acampamento Mutum; 2.5550 º S, 56.2229 º W; 10 May 2010; N. F. Lo Man Hung leg.; MPEG 30845 • 1 ♂; same data as for preceding; 10 May 2010; N. F. Lo Man Hung leg.; MPEG 30805 • 1 ♀; Vale do Igarapé Mutum; Platô do Rio Juruti; 2.6031 º S, 56.2101 º W; 6 Aug. 2004; D. F. Candiani leg.; MPEG 8661 • 1 ♂; Comunidade Jaratuba; 3.1924 º S, 56.5809 º W; 27 Sep. 2009; E. A. Jesus leg.; MPEG 15797 • 1 ♀; Igarapé Cabeça de Anta; 3.2008 º S, 56.4179 º W; 28 Sep. 2009; E. A. Jesus leg.; MPEG 15798.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18480215F54EF9C2B5047FF0.taxon	description	Description Male (holotype) COLOR. Prosoma pale brown, slightly darker along thoracic striae; fovea darker brown; eye borders black. Chelicerae, legs and pedipalps brownish orange. Labium brown, distally grayish brown. Endites grayish brown, distally lighter. Sternum pale creamish brown with darker margins. Opisthosoma gray; dorsally with three pairs of irregular whitish marmored marks, two anterior, along margins of cardiac mark and one posterior, close to spinnerets, and three pairs of brown short, transversal marks between the anterior and posterior pairs of white marks; ventrally with wide, gray band with two parallel lines of muscle impressions. Spinnerets yellowish brown (Fig. 3 A – B). MEASUREMENTS. Total length 6.5. Prosoma: length 3.1, width 2.9. Opisthosoma: length 3.3, width 1.8. Eyes: diameters 0.25, 0.19, 0.14, 0.19; interdistances 0.17, 0.10, 0.30, 0.27, 0.19, 0.12. Legs (2143): I: 23.0 (6.3, 1.8, 6.6, 6.5, 1.8); II: 26.9 (7.3, 2.0, 8.1, 7.6, 2.0); III: 16.0 (4.7, 1.5, 4.3, 4.2, 1.3); IV: 19.9 (5.6, 1.4, 5.5, 5.8, 1.6). PALP. RTA triangular slightly longer than wide; ST visible prolaterally, between 8: 30 and 10: 30 o’clock; sp running retrolaterally in a U-shape, C 3 × as long as wide, same width throughout, arising centrally from tegulum; E slightly longer than C, with wide base and gradually tapering towards tip, arising from tegulum at 8: 30 o’clock (Figs 3 C – E, 5 A – C). Female (paratype, MPEG 30844) COLOR. Coloration pattern as in male. Prosoma, chelicerae, legs and pedipalps lighter. Opisthosoma yellowish brown with small and irregular white marbled marks. Dorsally with conspicuous, gray cardiac mark; ventrally with wide gray band with pair of parallel lines of muscle impressions. Spinnerets pale yellowish gray (Fig. 4 A – B). MEASUREMENTS. Total length 8.2. Prosoma: length 3.7, width 3.3. Opisthosoma: length 4.2, width 2.5. Eyes: diameters 0.25, 0.22, 0.15, 0.19; interdistances 0.25, 0.20, 0.42, 0.39, 0.26, 0.18. Legs (2143): I: 17.9 (5.1, 2.0, 4.9, 4.6, 1.3); II: 19.9 (5.6, 2.1, 5.8, 5.1, 1.3); III: 12.9 (3.8, 1.5, 3.4, 3.0, 1.2); IV: 15.2 (4.5, 1.5, 4.0, 4.0, 1.2). EPIGYNE. EF wider than long; LL smooth; MS longer than wide with lateral, slender sclerotized rims; CO anterior, at lateral margins of MS; EP triangular (Figs 4 C, 5 D). VULVA. IDS with first winding hook-shaped, running anteriorly as double helix; one GP arising from anterior most turn and other from last turn, closer to FD; FD antero-laterad (Figs 4 D, 5 E – F). Variation Ten males: total length 5.4 − 7.0; prosoma length 2.6 − 3.1; femur I length 5.5 − 6.7. Ten females: total length 7.7 − 10.8; prosoma length 2.9 − 3.8; femur I length 4.3 − 4.9.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18480215F54EF9C2B5047FF0.taxon	distribution	Distribution Known from northwestern state of Pará (Fig. 15).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18400217F564FED1B2087A3F.taxon	description	urn: lsid: zoobank. org: act: 17 F 3 E 4 F 3 - A 34 B- 404 C-B 11 A- 3 DDD 5636 BD 26 Figs 6 – 7, 15	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18400217F564FED1B2087A3F.taxon	diagnosis	Diagnosis Females resemble those of U. carapiranga gen. et sp. nov. (Figs 4 C – D, 5 D – F) by the epigyne with MS shaped as an inverted Y, bearing median EP (MS elongate with anterior EP in U. uatuma gen. et sp. nov.). They are distinguished from those of the latter species by the LL touching posteriorly and EP almost 3 × as long as wide (Figs 6 C, 7 A), and IDS tightly twisted, with five turns (Figs 6 D, 7 B – C) (LL not touching posteriorly, EP roughly as wide as long and IDS lightly twisted with three turns in U. carapiranga). Males are unknown.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18400217F564FED1B2087A3F.taxon	etymology	Etymology The specific epithet refers to the Juruena River that borders the type locality of the species, São Nicolau Farm; noun in apposition.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18400217F564FED1B2087A3F.taxon	materials_examined	Type material Holotype BRAZIL – Mato Grosso State • ♀; Cotriguaçu; Fazenda São Nicolau; [10.1326 º S, 58.1412 º W]; Jan. 2018; G. Almeida leg.; IBSP 233305.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18400217F564FED1B2087A3F.taxon	description	Description Female (holotype) COLOR. Prosoma pale yellow, slightly darker along thoracic striae and eye area; fovea pale brown; eye borders black; legs, pedipalps and chelicerae pale yellow; labium pale brown distally pale yellow. Endites pale yellow, distally lighter; sternum pale yellow with slightly darker margins; opisthosoma covered with marbled white irregular marks; dorsally with cardiac mark pale gray with spidery lines extending laterally; ventrally with pale gray median longitudinal band and parallel lines of muscle impressions; spinnerets pale yellow (Fig. 6 A – B). MEASUREMENTS. Total length 8.5. Prosoma: 3.4 long, 3.0 wide. Opisthosoma: 5.0 long, 3.1 wide. Eyes: diameters 0.20, 0.20, 0.12, 0.17; interdistances 0.24, 0.20, 0.40, 0.34, 0.19, 0.17. Legs (2143): I: 14.8 (4.0, 1.6, 4.0, 4.1, 1.1); II: 16.9 (5.0, 1.8, 4.6, 4.3, 1.2); III: 10.8 (3.3, 1.3, 2.7, 2.5, 1.0); IV: 13.0 (3.9, 1.3, 3.4, 3.4, 1.0). EPIGYNE. EF longer than wide; LL touching each other posteriorly; MS slightly less than 2 × as long as wide; EP triangular 3 × as long as wide; CO anterior, at lateral margins of MS (Figs 6 C, 7 A). VULVA. IDS with first winding hook-shaped, running anteriorly as double helix; GP arising from last turn, closer to FD; FD antero-laterad (Figs 6 D, 7 B – C). Male Unknown.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18400217F564FED1B2087A3F.taxon	distribution	Distribution Only known from the type locality in the state of Mato Grosso (Fig. 15).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18460213F55CFED0B5E87E11.taxon	description	urn: lsid: zoobank. org: act: E 0 DF 65 B 2 - 179 D- 40 FB- 9587 - CBCFAAADBC 0 D Figs 8 – 9, 15	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18460213F55CFED0B5E87E11.taxon	diagnosis	Diagnosis Males of U. karipuna gen. et sp. nov. are distinguished from those of all congeners by the palps with T strongly projecting retroproximally and E arising at 5 o’clock position (Figs 8 D, 9 B) (T not projecting and E arising at 8: 30 o’clock in the other species). Females are unknown.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18460213F55CFED0B5E87E11.taxon	etymology	Etymology The specific epithet refers to the Karipuna indigenous people that currently inhabit an Indigenous Territory located in the municipalities of Porto Velho and Nova Mamoré, in Rondônia, Brazil; noun in apposition.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18460213F55CFED0B5E87E11.taxon	materials_examined	Type material Holotype BRAZIL – Rondônia State • ♂; Porto Velho; [8.7500 º S, 63.9000 º W]; 15 Apr. 1996; Equipe IBSP / SMNK leg.; IBSP 8691. Other material examined BRAZIL • 2 juvs; same vial as holotype; IBSP 8691.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18460213F55CFED0B5E87E11.taxon	description	Description Male (holotype) COLOR. Prosoma pale brown, darker along thoracic striae and lateral margins of cephalic region; fovea dark brown; eye borders black. Chelicerae pale brown as prosoma. Legs and pedipalps slightly lighter than prosoma. Labium brown, distally pale brown. Endites pale brow, distally lighter. Sternum orange brown with darker margins. Opisthosoma cream colored; dorsally with two pairs of faint whitish marbled marks along lateral margins of cardiac mark and six light brown chevron-like marks medially down posterior half; ventrally with pale brownish-yellow band with two parallel lines of muscle impressions. Spinnerets pale yellow (Fig. 8 A – B). MEASUREMENTS. Total length 7.6. Prosoma: length 3.2 long, 3.2 wide. Opisthosoma: 4.2 long, 2.2 wide. Eyes: diameters 0.24, 0.22, 0.16, 0.20; interdistances 0.18, 0.06, 0.34, 0.28, 0.14, 0.10. Legs (2143): I: 22.2 (5.9, 2.1, 6.3, 6.2, 1.7); II: 25.5 (7.0, 2.1, 7.4, 7.1, 1.9); III: 15.6 (4.6, 1.5, 4.2, 4.1, 1.2); IV: 18.8 (5.5, 1.5, 5.0, 5.3, 1.5). PALP. RTA almost 2 × as long as wide, projecting away from tibia in ventral view and with curved tip in retrolateral view; ST visible prolaterally; sp running retrolaterally with strong medial indentation; C 2 × as long as wide, with very wide base; E filiform, longer than C (Figs 8 C – E, 9). Female Unknown.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D18460213F55CFED0B5E87E11.taxon	distribution	Distribution Only known from the type locality, in the state of Rondônia (Fig. 15).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1844020DF572FC54B56D7FD3.taxon	description	urn: lsid: zoobank. org: act: BB 6 EB 59 D-C 1 C 9 - 4790 - A 0 CF- 9 C 794310 B 87 D Figs 10 – 11, 15	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1844020DF572FC54B56D7FD3.taxon	diagnosis	Diagnosis Males of Uaica mapia gen. et sp. nov. resemble those of U. uatuma gen. et sp. nov. (Figs 12 C – E, 14 AC) by the E slender, longer than C and arising from tegulum at 8: 30 o’clock position (Figs 10 D, 11 B), but are distinguished by the RTA S-shaped in retrolateral view (Figs 10 E, 11 C) (straight and conical in U. uatuma) and by the E arising straight from the tegulum (Figs 10 D, 11 B) (arising from an indentation of the tegulum in U. uatuma). Females are unknown.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1844020DF572FC54B56D7FD3.taxon	etymology	Etymology The specific epithet refers to the type locality, the Mapiá River; noun in apposition.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1844020DF572FC54B56D7FD3.taxon	materials_examined	Type material Holotype BRAZIL – Amazonas State • ♂; Borba; Rio Mapiá; [4.4500 º S, 59.3333 º W]; 22 Apr. 1996; equipe IBSP / SMNK leg.; IBSP 8817. Paratypes BRAZIL – Amazonas State • 1 ♂; same data as for holotype; IBSP 60015 • 1 ♂; Coari; Trocaris; Comunidade Trocaris; 3.8980 º S, 62.8670 º W; 25 Sep. 2003, F. Rego et al. leg.; IBSP 270063 • 1 ♂; same data as for preceding; 3.8940 º S, 62.8850 º W; IBSP 270044. Other material examined BRAZIL • 3 juvs; same data as for holotype; IBSP 8817.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1844020DF572FC54B56D7FD3.taxon	description	Description Male (holotype) COLOR. Prosoma pale brownish orange slightly darker along thoracic striae; fovea dark brown; eye borders black. Chelicerae, legs and palps slightly lighter than prosoma. Labium pale brown, distally pale orange. Endites pale orange. Sternum pale yellow with pale brown margins. Opisthosoma brownish gray; dorsally with whitish marbled irregular marks around cardiac mark and posteriorly close to spinnerets; ventrally with wide gray band with two parallel lines of muscle impressions. Spinnerets cream colored (Fig. 10 A – B). MEASUREMENTS. Total length 6.4. Prosoma: 2.7 long, 2.6 wide. Opisthosoma: 3.5 long, 1.6 wide. Eyes: diameters 0.24, 0.20, 0.16, 0.18; interdistances 0.12, 0.06, 0.30, 0.20, 0.12, 0.10. Legs (2143): I: 21.6 (5.7, 1.7, 6.3, 6.3, 1.6); II: 25.8 (6.8, 1.7, 7.7, 7.5, 2.1); III: 14.7 (4.2, 1.3, 4.1, 4.0, 1.1); IV: 18.0 (5.0, 1.3, 4.9, 5.4, 1.4). PALP. RTA almost 4 × as long as wide; sp running retrolaterally with slight medial indentation; C slightly over 4 × as long as wide, same width throughout; E tapering towards tip, longer than C (Figs 10 C – E, 11). Female Unknown. Variation Four males: total length 6.4 − 7.3; prosoma length 2.7 − 3.4; femur I length 5.7 − 6.2.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1844020DF572FC54B56D7FD3.taxon	distribution	Distribution Known from the northeastern state of Amazonas (Fig. 15).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1859020AF56BFED0B5697977.taxon	description	urn: lsid: zoobank. org: act: 55 CE 25 EE- 5589 - 424 B-A 000 - 7951 CC 7033 D 6 Figs 12 – 15	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1859020AF56BFED0B5697977.taxon	diagnosis	Diagnosis Males of U. uatuma gen. et sp. nov. resemble those of U. mapia gen. et sp. nov. (Figs 10 C – E, 11) by the E slender, longer than C and arising from tegulum at 8: 30 o’clock position, but are distinguished by the RTA straight and conical in ventral view and slightly bent medially in retrolateral view (Figs 12 E, 14 C) (S-shaped in retrolateral view in U. mapia) and by the tegulum bearing an indentation at the base of E (Figs 12 D, 14 B) (arising straight from the tegulum in U. mapia). Females distinguished from those of U. carapiranga gen. et sp. nov (Figs 4 C – D, 5 D – F) and U. juruena gen. et sp. nov. (Figs 6 C – D, 7) by anterior position of EP and slender, elongate MS, more than 3 × as long as wide (Figs 13 C, 14 D) (slightly more median EP and MS shaped as an inverted Y, slightly longer than wide in the later species).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1859020AF56BFED0B5697977.taxon	etymology	Etymology The specific epithet refers to the type locality. The Usina Hidrelétrica de Balbina (Balbina Hydroelectric Plant) was built on the Uatumã River in northeastern Amazonas; noun in apposition.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1859020AF56BFED0B5697977.taxon	materials_examined	Type material Holotype BRAZIL – Amazonas State • ♂; Presidente Figueiredo; Usina Hidrelétrica de Balbina; [1.9000 º S, 59.4667 º W]; 7 Dec. 1988; Equipe Butantan leg.; IBSP 7372. Paratypes BRAZIL – Amazonas State • 1 ♀; same data as for holotype; 1987 – 1988; IBSP 7345 • 1 ♀; same data as for holotype; 1987 – 1988; IBSP 7346 • 1 ♂; Manaus, Reserva do km 41; [2.4072 º S, 59.7611 º W]; Aug. 2000; A. J. Santos leg.; IBSP 37295.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1859020AF56BFED0B5697977.taxon	description	Description Male (holotype) COLOR. Prosoma pale brownish orange with slightly darker margins; fovea dark brown; eye borders black. Chelicerae same as prosoma. Legs and palps lighter than prosoma. Labium pale brown, distally pale orange. Endites pale orange. Sternum pale yellow with pale brown margins. Opisthosoma yellowish cream colored; dorsally with whitish marbled irregular marks around cardiac mark and posteriorly close to spinnerets; ventrally with three whitish marbled marks running posteriorly from epiandrous region to spinnerets. Spinnerets cream colored (Fig. 12 A – B). MEASUREMENTS. Total length 5.5. Prosoma: 2.7 long, 2.5 wide. Opisthosoma: 2.7 long, 1.6 wide. Eyes: diameters 0.25, 0.20, 0.15, 0.20; interdistances 0.16, 0.05, 0.30, 0.19, 0.15, 0.05. Legs (2143): I: 21.0 (5.6, 1.6, 6.1, 6.1, 1.6); II: 24.0 (6.5, 1.6, 7.2, 7.0, 1.7); III: 14.5 (4.2, 1.2, 4.1, 3.9, 1.1); IV: 17.8 (5.0, 1.2, 5.0, 5.2, 1.4). PALP. RTA longer than wide, mostly straight and pointed; tegulum forming a slight indentation probasally; sp running retrolaterally in a straight line; C arising medially, more than 6 × as long as wide, shorter than E; E filiform with wide base, curved at tip (Figs 12 C – E, 14 A – C). Female (paratype, IBSP 7346) COLOR. Coloration pattern much darker than in male. Prosoma orange brown with darker margins; fovea dark brown; eye borders black. Chelicerae and legs as prosoma. Labium, endites and sternum brownish orange. Opisthosoma grayish brown; dorsally with elongated marks laterally and posteriorly; ventrally with shorter marks laterally and two parallel lines of muscle impressions. Spinnerets pale brownish cream colored (Fig. 13 A – B). MEASUREMENTS. Total length 7.0. Prosoma: 3.2 long, 3.0 wide. Opisthosoma: 3.6 long, 2.1 wide. Eyes: diameters 0.22, 0.22, 0.16, 0.20; interdistances 0.20, 0.14, 0.36, 0.32, 0.18, 0.14. Legs (2143): I: 17.7 (4.9, 1.8, 4.9, 4.7, 1.4); II: 19.8 (5.7, 1.8, 5.6, 5.2, 1.5); III: 12.6 (3.7, 1.4, 3.3, 3.1, 1.1); IV: 15.3 (4.4, 1.4, 4.1, 4.1, 1.30). EPIGYNE. EF as long as wide; LL smooth and parallel; MS with elongate lateral rims (Figs 13 C, 14 D). VULVA. IDS running anteriorly in double helix; GP elongate, distally with short ramifications; arising from last turn, closer to FD; FD laterad (Figs 13 D, 14 E – F). Variation Two males: total length 5.5 − 6.5; prosoma length 2.7 − 2.9; femur I length 5.6 − 6.1. Two females: total length 7.0 − 9.7; prosoma length 3.2 − 3.5; femur I length 4.8 − 4.9.	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
03CACF3D1859020AF56BFED0B5697977.taxon	distribution	Distribution Known from central and eastern Amazonas State (Fig. 15).	en	Rheims, Cristina A. (2025): Uaica gen. nov., a new genus of huntsman spiders from the Brazilian Amazonia (Araneae: Sparassidae). European Journal of Taxonomy 989: 24-49, DOI: 10.5852/ejt.2025.989.2879, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2879/13067
