Scytodes turvo, 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 : 43-44

Scytodes turvo new species

Figs. 157–159

Type material: Holotype: female from Parque Estadual do Turvo [27°00'– 27°20' S; 53°40'– 54°10' W] Derrubadas, Rio Grande do Sul, Brazil, 11–18 January 2002, Equipe Biota, deposited in IBSP 92355. Paratype: BRAZIL. Santa Catarina: Chapecó [27°06'10.5" S; 52°46'48.8" W] (Floresta Nacional de Chapecó ), 1Ƥ, I.2003 – XII.2004, M. Scartezini ( IBSP 92530).

Etymology. The specific name is a noun in apposition that refers to the type locality of the holotype. Diagnosis. Females of Scytodes turvo n.sp. resemble those of S. apuecatu Rheims & Brescovit by the female epigynum with widely separated, ridged positioning ridges ( Fig. 157 ; Rheims & Brescovit 2006: 302, fig. 33) and rounded spermathecae adjacent to rounded hyaline pockets ( Fig. 158 ; Rheims & Brescovit 2006: 302, fig. 34). They are distinguished by the larger spermathecae and shorter and thicker stalks ( Fig. 158 ). Description. Male unknown.

Female (Holotype, IBSP 92355). Carapace pale orange, lighter at center, with faint brown pattern as shown on Fig. 157 . Chelicerae yellow with dorsal, longitudinal, brown stripe. Pedipalps pale yellow. Tibia with a dorsal and prolateral longitudinal brown stripe. Labium cream colored, brown at base. Endites cream colored. Sternum cream colored with brown markings in front of each coxae. Legs pale yellow. Femur I-IV with ventral pair of longitudinal, brown stripes. Patella and tibia I–IV with brown distal extremities. Abdomen whitish gray with very faint black pattern ( Fig. 157 ). Total length 6.5. Carapace domed, 2.8 long, 2.5 wide. Eye diameters: PME 0.20, ALE 0.18, PLE 0.16. Lateral eyes on a tubercle. Chelicerae with subapical hyaline keel and inconspicuous stridulatory ridges. Labium 0.28 long, 0.36 wide. Sternum 1.4 long, 1.1 wide. Leg measurements: I: femur 4.2, patella 0.7, tibia 4.5, metatarsus 5.3, tarsus 0.8, total 15.5; II: 3.3, 0.6, 3.0, 3.7, 0.6, 0.6; III: 2.1, 0.6, 1.7, 2.2, 0.5, 7.1; IV: 3.2, 0.6, 2.9, 3.1, 0.6, 10.4. Palpal femur with stridulatory pick short and stout with triangular and projected socket. Epigynum with ridged positioning ridges, separated from each other by slightly more than three times their width ( Fig. 158 ). Vulva with rounded spermathecae of thick stalks adjacent to rounded hyaline pockets with slightly sclerotized lateral area ( Fig. 159 ). Abdomen 3.5 long, 3.0 wide, covered with slender hairs.

Variation. Three females: total length 5.0–6.5; carapace 2.4–2.8; femur I 3.4–4.2.

Distribution. Atlantic Forest. Known from the states of Santa Catarina and Rio Grande do Sul.

Figures

FIGURES 153 – 159. 153 – 156. Scytodes ilhota n. sp. 153. Male habitus, dorsal. 154 – 156. Left male palp (154 prolateral, 155 retrolateral, 156 detail of distal region, dorsal). 157 – 159. Scytodes turvo n. sp. 157. Female habitus, dorsal. 158 – 159. Female epigynum (158 ventral, 159 dorsal) (SP = sclerotized process). Scale lines: 0.5 mm.