Taxonomic Revision of the Spider Genus Actinopus Perty, 1833 (Araneae, Mygalomorphae, Actinopodidae) Author Miglio, Laura Tavares 0000-0002-9101-8657 Museu Paraense Emílio Goeldi, Coordenação de Zoologia, Laboratório de Aracnologia, Av. Perimetral, 1901, Terra Firme, Cep: 66077 - 830, Belém, Pará, Brazil. https: // orcid. org / 0000 - 0002 - 9101 - 8657, lauramiglio@gmail.com Author Pérez-Miles, Fernando 0000-0002-4367-6276 Facultad de Ciencias, Sección Entomología, Iguá 4225, 11400, Montevideo, Uruguay. ® myga @ fcien. edu. uy, https: // orcid. org / 0000 - 0002 - 4367 - 6276 myga@fcien.edu.uy Author Bonaldo, Alexandre B. 0000-0002-9101-8657 Museu Paraense Emílio Goeldi, Coordenação de Zoologia, Laboratório de Aracnologia, Av. Perimetral, 1901, Terra Firme, Cep: 66077 - 830, Belém, Pará, Brazil. https: // orcid. org / 0000 - 0002 - 9101 - 8657, bonaldo@museu-goeldi.br text Megataxa 2020 2020-10-09 2 1 1 256 journal article 3667 10.11646/megataxa.2.1.1 f7793976-e4e9-4562-a9cd-eda910d77fa0 2703-3090 5597237 D8203766-9E7B-468F-9E75-F21393A1BA3D Actinopus vilhena sp. nov. Figs 73–75 , Map 5 Type material. Holotype male from [ 12° 44’ S 60° 07’ W ], Vilhena , Rondônia , Brazil , ix.1999 , M. Carvalho leg. ( IBSP 114440 ) . Paratype : BRAZIL . Mato Grosso do Sul : Corumbá , [ 19° 00’ S 57° 39’ W ], 1♂ ( IBSP 110559 ) . Etymology. The specific name is a noun in apposition from the type locality name., Vilhena, Rondônia . Diagnosis. Male resemble those of A. nattereri ( Figs 63 A , 67 E ), A. itapitocai ( Fig. 79 A ), A. itaqui ( Fig. 89 A ) and A. caxiuana ( Fig. 98 A ) by the bluish-gray coloration on the dorsal abdomen ( Fig. 73 A ); it resembles those of A. nattereri ( Fig. 37 A–D), A. harveyi ( Fig. 78 A–C), A. itapitocai ( Fig. 83 A–C), A. xingu ( Fig. 94 A–C) and A. utinga ( Fig. 103 A–C) by BTA displaced dorsally in relation to a middle longitudinal line along the prolateral tegular surface ( Fig. 75 A ); they resemble those of A. nattereri , A. xingu and A. utinga by the keels contiguous, close to each other, as seen in prolateral view ( Fig. 75 A ). The male resembles those of A. harveyi , A. itapitocai , A. itaqui ( Fig. 91 A–C), A. xingu and A. utinga by PA continuous to PI ( Fig. 75 A ) and differ from those of all other species of the group nattereri by the non-overlapping keels and by the elongated, thin tegulum ( Fig. 75 A–C). FIGURE 74. Actinopus vilhena sp. nov. , male: A–D IBSP 114440: A. Patella III, dorsal; B. Tibia III, dorsal; C. Patella IV, dorsal; D. Tibia IV, dorsal. MALE (IBSP 114440): Total length 17.38; Carapace, long 6.12; wide 5.62. Carapace anterior part tapering, posterior part rounded. Anterior eye row slightly procurved, posterior row recurved ( Fig. 73 B ). Without bristles between AME-clypeus, between ALE–ALP, and wih short bristles between posterior eyes-fovea and lateral eyes-edge of carapace. Sternum with eight sigilla fused medially, two distal sigilla more fused than others ( Fig. 73 C ). Rastellum protuberant, inverted V-shaped, hirsute, without spines apically ( Fig. 73 E–F). Chelicerae with 4–9 denticles along prolateral row of teeth. Prolateral row five megateeth. Retrolateral row with five megateeth and two denticles between three distal and two basal megateeth ( Fig. 73 D ). Patella and tibia III with distal crown of welldeveloped thorns, not interrupted in middle ( Fig. 74 A–B). Patellae III and IV with spines on prolaterodorsal face ( Fig. 74 A, C ). Tibia IV without spines on dorsal surface ( Fig. 74 D ). Ventral pseudoscopulae occupying 30% of tarsus I, 50% of II and 100% of III and IV. Pseudoscopula of tarsi I and II with setae spaced, forming diffuse group of bristles; On tarsi III and IV, compact. Carapace, chelicerae, sternum, coxae, trochantera, femora, patellae, tibiae, metatarsi and tarsi dark brown; abdomen gray, hirsute ( Fig. 73 A ). Eyes: Diameters: PME 0.24, PLE 0.44, ALE 0.56, AME 0.36; MOQ: Length 1.24, front width 3.32, back width 2.92; Interdistances: PME–PME 1.76, PLE–PME 0.28, AME–AME 0.24, ALE–AME 0.92, ALE–PLE 1.24, AME–PME 0.52. Ocular area: OAL 6.25, OAW 4.37, and IF 4. Body: Clypeus: 0.37; Fovea: 2.62; Labium: long 1.25; wide 1.25; Chelicerae: long 3.5; wide 2.12; Sternum: long 6.37; wide 4.5. Abdomen: long 7.5; wide 5. Leg measurements: I: Fe 7/ Pa 2.87/ Ti 3.87/ Me 5/ Ta 2.5/ total 21.25. II: 6.5/ 3.12/ 3.75/ 5/ 2.75/ 21.12. III: 5.25/ 3/ 2.87/ 5.12/ 2.87/ 19.12. IV: 7.12/ 3.25/ 5.87/ 6.12/ 3/ 25.37. Formula 4123. Spination: I—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v1-1-1, d0, p0, r0; Me v1- 1-3, d0, p0, r3-6-2; ta v0-6-2 d0, p0-0-2, r0. II—Fe v0, d0, p0, r0; Pa v0, d0, p0, r0; ti v0, d0, p0, r0; Me v2-1-3, d0, p5-5-0, r0-1-3; ta v1-2-3, d0, p3-4-6, r1-3-6. III—Fe v0, d0, p0, r0; Pa v0-0-1, d3-4-18, p2-0-4, r0-0-2; ti v0-0-5, d1-0-13, p0-0-4, r0-5-3; Me v1-1-5, d2-0-0, p2-0-0, r0-1- 3; ta v0, d0, p0-3-3, r0-2-2; IV—Fe v0, d0, p0, r0; Pa v0- 1-2, d13-6-0, p2-1-0, r0; ti v0-0-3, d0, p0, r0; Me v2-2-3, d0, p0, r0; ta v0, d0, p0-1-9, r0-3-2. Palp: PA developed; thin, flattened embolus with three keels (PAc, PI and PS), equally spaced, without overlapping. serrated area. PA contiguous to PI in prolateral view. BTA well developed, displaced dorsally in relation to middle longitudinal line along prolateral tegular surface ( Fig. 75 A–C). FIGURE 75. Actinopus vilhena sp. nov. , male: A–C IBSP 114440: A. Copulatory bulb, prolateral; B. Copulatory bulb, dorsal; C. Copulatory bulb, retrolateral. PA- Paraembolic apophysis; BTA -Basal Tegular Apophysis; PAc -Prolateral Accessory keel; PI - Prolateral Inferior keel; PS -Prolateral Superior keel. Scale line: 1 mm. Distribution. BRAZIL . Rondônia : Vilhena. Mato Grosso do Sul : Corumbá ( Map 5 ).