Stethorrhagus papilio, Xavier & Brescovit & Bonaldo, 2025

Stethorrhagus papilio sp. nov.

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Figs 45 View Fig , 51 View Fig

Diagnosis

Females are similar to those of S. hyula , S. roraimae and S. nigrinus by the epigynal plate without VEP, with CO disposed anteriorly in relation to SI ( Figs 7C View Fig , 23C–D View Fig , 44C–D View Fig , 45C–F View Fig ; Bonaldo & Brescovit 1994: figs 19c–d, 21b–c, 23a–b). They differ from those of S. hyula by the epigynal plate without a posterior median half-moon-shaped sclerotization ( Fig. 45C–F View Fig ) (present in S. hyula Bonaldo & Brescovit 1994 : fig. 19c); from those of S. roraimae by the relatively large CO, with its width four times smaller than the distance between the CO and the posterior margin of the epigynal plate ( Fig. 45C–F View Fig ) (small CO, with width nearly 12 times smaller than the distance between the CO and the posterior margin of the epigynal plate in S. roraimae ( Fig. 7C View Fig ; Bonaldo & Brescovit 1994: fig. 23a) and from those of S. nigrinus by the posterior border of CO straight; CD’s dorsal reinforcement rods surpassing CO anteriorly ( Fig. 45C–F View Fig ) (posterior border of CO sinuous; CD’s dorsal reinforcement rods not surpassing CO anteriorly S. nigrinus ( Fig. 44C–D View Fig ; Bonaldo & Brescovit 1994: fig. 21b).

Etymology

The specific name is a noun in apposition in reference to the lepidopteran genus Papilio Linnaeus, 1758 , since the median sector of the epigynum (as in Fig. 45C View Fig ) resembles a butterfly in dorsal view.

Material examined

Holotype

COLOMBIA • ♀; Nariño, from 25 mi. SW of Mocoa; [ 1°08′45″ N, 76°38′16″ W]; 3 Mar. 1955; E.S. Shinger and E.S. Ross leg.; CAS 9119043 About CAS .

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Description

Male

Unknown.

Female ( holotype – CASENT9119043)

COLORATION. Carapace orange-brown, dark in cephalic area. Sternum, endites, labium and legs yellow. Chelicerae brown. Abdomen gray with white dorsal spots ( Fig. 45A View Fig ) venter and spinnerets cream. Sternum with deep sternal excavations ( Fig. 45B View Fig ).

MEASUREMENTS. Total length 7.71, prosoma length 3.76, width 2.88. Clypeus 0.30. I: femur 3.25/ patella 1.22/ tibia 2.88/ metatarsus 2.67/ tarsus 1.60/ total 11.62; II: 3.20/ 1.29/ 2.75/ 2.65/ 1.50/ 11.39; III: 2.90/ 1.30/ 2.29/ 2.61/ 1.31/ 10.41; IV: 3.61/ 1.30/ 3.18/ 3.94/ 1.54/ 13.57. Eye diameters: AME 0.20, ALE 0.19, PME 0.19, PLE 0.18. Chelicerae 1.68 long, with three promarginal teeth and five retromarginal denticles.

LEG SPINATION. I – femur d1-1-0, p0-0-1, r0; tibia d0, p0, r0, v2-1p-2-2; metatarsus d0, p0, r0, v2-2-0. II – femur d1-1-0, p0-1-1, r; tibia d0, p0, r0, v1r-2-2-0; metatarsus d0, p0, r0, v2-2-0. III – femur d1-1-1, p0-0-1, r0-0-1; tibia d0, p1-1-0, r1-1-0, v2-2-2; metatarsus d0, p1-1-1, r1-1-1, v2-2-1. IV – femur d1-1-1, p0-1-1, r0-1-1; tibia d0-1-0, p1-1-0, r1-1-0, v2-2-2; metatarsus d0, p1-1-1, r1-1-1, v2-2-2.

EPIGYNUM. CO slit-shaped, disposed anteriorly in relation to SI, posterior border of CO straight, CD’s dorsal reinforcement rods surpassing CO anteriorly, VEP absent, PVP almost as wide as long, covering almost entire SI, posterior margin of PVP rounded and protruding ( Fig. 45C–F View Fig ).

Distribution

Known only from the type locality ( Fig. 51 View Fig ).