Scytodes bonito, Rheims, Cristina A. & Brescovit, Antonio D., 2009

Rheims, Cristina A. & Brescovit, Antonio D., 2009, New additions to the Brazilian fauna of the genus Scytodes Latreille (Araneae: Scytodidae) with emphasis on the Atlantic Forest species, Zootaxa 2116, pp. 1-45 : 18-20

Scytodes bonito new species

Figs. 62–67

Type material. Holotype: male from Baía Bonita, Bonito [21°07' S; 56°28' W], Mato Grosso do Sul, Brazil, 14–23 October 2002, Equipe Biota, deposited in IBSP 92457.

Paratypes: BRAZIL. Mato Grosso do Sul: Bonito [21°07' S; 56°28' W] (Fazenda Nossa Senhora Aparecida), 1Ƥ, 14–23 October 2002, Equipe Biota ( IBSP 92455); (Fazenda Pitangueiras) 13, 14–23 October 2002, Equipe Biota ( IBSP 92458). Rio de Janeiro: Cachoeiras de Macacu [22°28' S; 42°38' W] (Reserva Ecológica de Guapi–Assú),, 13, 8–12 November 2001, Equipe Biota ( IBSP 97160). São Paulo: Iporanga [24°34' S; 48°34' W] (Parque Estadual Turístico do Alto Ribeira, Gruta do Ouro Grosso), 13 3Ƥ, 5–15 November 2001, Equipe Biota, ( IBSP 92476; 92470; MZSP 28958).

Etymology. The specific name is a noun in apposition and refers to the type locality of the holotype.

Diagnosis. Males of Scytodes bonito n.sp. are distinguished from those of the remaining Neotropical Scytodes by the palp with a retrolateral, serrated, laminar projection ( Figs. 64–65 ). The females are distinguished by the round spermathecae on long and curved stalks and fused hyaline pockets, with lateral sclerotized areas ( Fig. 67 ).

Description. Male (Holotype, IBSP 92457) Carapace pale orange with brown pattern as shown on Fig. 62 . Chelicerae pale orange with dorsal, longitudinal brown stripe. Pedipalps pale yellow with lateral brown markings. Labium and endites pale yellow. Sternum pale yellow with black markings in front of each coxae. Legs pale yellow. Femora I–IV with pair of longitudinal ventral black stripes. Patellae, tibiae and metatarsi distally black. Abdomen gray with dark gray pattern ( Fig. 62 ). Total length 3.8. Carapace slightly domed, 2.0 long, 1.7 wide. Eye diameters: PME 0.14, ALE 0.14, PLE 0.14. Lateral eyes on a tubercle. Chelicerae with subapical hyaline keel and inconspicuous stridulatory ridges. Labium 0.18 long, 0.26 wide. Sternum 1.04 long, 0.80 wide. Leg measurements: I: femur 4.9, patella 0.6, tibia 5.2, metatarsus 6.5, tarsus 0.8, total 18.0; II: 3.5, 0.5, 3.4, 4.3, 0.7, 12.4; III: 2.2, 0.4, 2.0, 2.4, 0.6, 7.8; IV: 3.5, 0.5, 3.2, 3.6, 0.7, 11.5. Palpal femur with stridulatory pick short and stout on rounded and projected socket. Cymbium with pair of strong distal spines ( Fig. 63 ). Bulb 0.86 long, very slightly curved medially. Distal region concave ( Figs. 63–65 ) with retrolateral hyaline keel, serrated, laminar projection and sclerotized process ( Figs. 64–65 ). Abdomen 1.8 long, 1.2 wide, covered with slender hairs.

Female (Paratype, IBSP 92455). Coloration pattern as in male. Total length 4.8. Carapace domed, 2.5 long, 1.9 wide. Eye diameters: PME 0.14, ALE 0.16, PLE 0.16. Lateral eyes on a tubercle. Chelicerae as in male. Labium 0.16 long, 0.24 wide. Sternum 1.2 long, 0.88 wide. Leg measurements: I: femur 3.7, patella 0.6, tibia 3.0, metatarsus 4.3, tarsus 0.7, total 12.3; II: 2.6, 0.5, 2.6, 3.1, 0.5, 9.3; III: 1.9, 0.5, 1.5, 2.0, 0.5, 6.4; IV: 2.6, 0.5, 2.5, 2.6, 0.7, 8.9. Palpal femur as in male. Epigynum with narrow, slightly curved positioning ridges and narrow foveas separated from each other by more than ten times their width ( Fig. 66 ). Vulva with round spermathecae on long and curved stalks and fused hyaline pockets, with lateral sclerotized areas ( Fig. 67 ). Abdomen 2.4 long, 1.9 wide, as in male.

Variation. Four males: total length 3.8–4.5; carapace 2.0–2.2; femur I 4.9–5.3; bulb 0.62–0.86. Eight females: total length 4.0–5.7; carapace 2.2–2.5; femur I 2.5–3.7.

Distribution. Pantanal and Atlantic Forest. From Mato Grosso do Sul to São Paulo and Rio de Janeiro.

Figures

FIGURES 62 – 73. 62 – 67. Scytodes bonito n. sp. 62. Male habitus, dorsal; 63 – 65. Left male palp (63 prolateral, 64 retrolateral, 65 detail of distal region, dorsal). 66 – 67. Female epigynum (66 ventral, 67 dorsal). 68 – 73. Scytodes tyaia n. sp. 68. Male habitus, dorsal; 69 – 73 Left male palp (69 prolateral, 70 retrolateral, 71 detail of distal region, dorsal). 72 – 67. Female epigynum (66 ventral, 67 dorsal) (K = keel; SLP = serrated laminar process; SP = sclerotized process). Scale lines: 0.5 mm.