Stethorrhagus ovis, Xavier & Brescovit & Bonaldo, 2025

Xavier, Cláudia, Brescovit, Antonio D. & Bonaldo, Alexandre B., 2025, Revising the revision: on 12 new species of Stethorrhagus Simon, 1896 from Colombia and Ecuador (Araneae: Corinnidae: Corinninae), with reassessments of all previously described species, European Journal of Taxonomy 1013, pp. 1-76 : 42-45

Stethorrhagus ovis sp. nov.

urn:lsid:zoobank.org:act:

Figs 28–30, 51

Diagnosis

Males of S. ovis sp. nov. resemble those of S. duidae by the VL bifid, dVL protruding and both vVL and dVL glabrous, without thick modified hairs ( Figs 27B–D, 29A–B, 30A–B; Bonaldo & Brescovit 1994: fig. 20b). They differ by the vVL short and entire AS absent, the embolus narrow-based, with protruding SePP and well-developed apical prongs ( Figs 29A–B, 30A–B) (vVL long, bifid in the distal third, AS present, and by the embolus wide-based, with SePP not protruding, with reduced apical prongs in S. duidae – Fig. 27C–D; Bonaldo & Brescovit 1994: fig. 20a–b). Females resemble those of S. canis sp. nov. and S. felis sp. nov. by the CO slit-shaped, disposed posteriorly in relation to SI ( Figs 29C–D, 30C–D, 36C–D). They differ from those of S. canis by the CO relatively small (width five times smaller than the distance between CO and posterior margin of epigynal plate), placed on the anterior half of the epigynal plate ( Figs 29C, 30C) (CO large, as wide as the distance between CO and posterior margin of epigynal plate in S. canis , placed on the posterior half of the epigynal plate in S. canis – Fig. 47C, E) and from those of S. felis by the VEP posterior margin nearly straight ( Figs 29C, 30C), whereas it is procurved in S. felis ( Fig. 36C).

Etymology

The specific name is a noun in apposition in reference to the bovid genus Ovis Linnaeus, 1758 , since the general conformation of the epigynum (as in Fig. 29C) resembles a sheep head in frontal view.

Material examined

Holotype

ECUADOR • ♂; Cotopaxi, Bosque Integral Otonga , 4.5 km S of San Francisco de Las Pampas; 0°25′8.0″ S, 78°59′51.5″ W; elev. 1625 m; 8 Dec. 2009; A.B. Bonaldo leg., QCAZI 280517 .

Paratype

ECUADOR • 1 ♀; same data as for holotype; MPEG 40708 .

Description

Male ( holotype – QCAZI 280517)

COLORATION. Cephalothorax red-brown. Legs red-brown with coxae and tarsi yellowish. Abdomen with orange muscular impressions ( Fig. 28A). Sternum with deep sternal excavations ( Fig. 28C).

MEASUREMENTS. Total length 4.32. Carapace 2.18 long, 1.69 wide. Clypeus 0.16. Eye diameters: AME 0.15, ALE 0.14, PME 0.13, PLE 0.14. Chelicerae 0.85 long, with three promarginal teeth and four retromarginal denticles Leg measurements: I: femur 1.86/ patella 0.70/ tibia 1.62/ metatarsus 1.43/ tarsus 1.04/ total 6.65; II: absent; III: 1.53/ 0.57/ 1.20/ 1.44/ 0.89/ 5.63; IV: 1.93/ 0.64/ 1.60/ 2.20/ 0.98/ 7.35.

LEG SPINATION. I – femur d1-1-0, p0-0-1, r0; tibia d0, p0, r0, v1p-2-2-2; metatarsus d0, p0, r0, v2-2-0. II – Missing. III – femur d1-1-1, p0, r0; tibia d0, p0, r0, v0-1p-1r; metatarsus d0, p1-1-0, r1-1-0, v2-0-1. IV – femur d1-1-1, p0, r0; tibia d0, p0, r0-0-1, v0-0-2; metatarsus d0, p1-1-1, r1-1-1, v2-0-1.

PALP. RTA with vVL and dVL glabrous, vVL apex straight in retrolateral view, dVL apex subtriangular in retrolateral view, AS absent, DL small, triangular, visible in dorsal view, VTA longer than wide, with narrowing between proximal and distal part visible in ventral view, spermophor situated prolaterally, TP1 small and rounded in ventral view, TP2 absent, SePP short, embolus short and slightly curved dorsally, visible in retrolateral view. ( Figs 29A–B, 30A–B).

Female ( paratype – MPEG 40708)

COLORATION. As in male, except abdomen dark gray ( Fig. 28B). Sternum with sternal excavations as in male but larger ( Fig. 28D).

MEASUREMENTS. Total length 6.40. Carapace 2.58 long, 2.06 wide. Clypeus 1.17. Leg measurements: I: femur 2.20/ patella 0.93/ tibia 2.02/ metatarsus 1.74/ tarsus 1.15/ total 8.04; II: 2.04/ 0.92/ 1.82/ 1.72/ 1.09/ 7.59; III: 1.98/ 0.67/ 1.48/ 1.66/ 1.01/ 6.80; IV: 2.31/ 0.94/ 2.12/ 2.54/ 1.06/ 8.97. Eye diameters: AME 0.19, ALE 0.18, PME 0.16, PLE 0.16. Chelicerae 1.17 long, with three promarginal teeth and four retromarginal denticles.

LEG SPINATION. I – femur d1-1-1, p0-0-1, r0-0-1; tibia d0, p0, r0, v1p-2-2-3; metatarsus d0, p0, r0, v2-2- 0. II – femur d1-1-1, p0, r0; tibia d0, p0, r0, v0-1r-2; metatarsus d0, p0, r0, v2-2-0. III – femur d1-1-0, p0-0-1, r0; tibia d0, p0-1-0, r0-1-1, v0-1-2; metatarsus d0, p0-1-2, r0-1-2, v2-2-1. IV – femur d1-1-0, p0-0-1, r0; tibia d0, p1-1-0, r1-1-0, v1p-1p-2; metatarsus d0, p1-1-0, r1-1-0, v2-2-1.

EPIGYNUM. CO slit-shaped, disposed posteriorly in relation to spermathecae, PVP wider, three times the distance between the anterior and posterior margins, covering SI, SII elongated, copulatory duct relatively short, from CO to posterior margin of PVP (about four times smaller than the PVP width) ( Figs 29C–D, 30C–D).

Distribution

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