Stethorrhagus canis, Xavier & Brescovit & Bonaldo, 2025

Stethorrhagus canis sp. nov.

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Figs 47 View Fig , 49–50 View Fig View Fig

Diagnosis

Females resemble those of S. felis sp. nov. and S. ovis sp. nov. by the CO slit-shaped, disposed posteriorly in relation to SI ( Figs 29C–D View Fig , 30C–D View Fig , 35D–E View Fig , 36C–D View Fig ), differing by the CO large, as wide as the distance between the CO and the posterior margin of the epigynal plate, located on the posterior half of the epigynal plate ( Fig. 47C–F View Fig ) (CO relatively small, as wide as five times the distance between the CO and the posterior margin of the epigynal plate, located on the anterior half of the epigynal plate in both S. felis and S. ovis – Figs 29C–D View Fig , 30C–D View Fig , 36C–D View Fig , 35D–E View Fig ).

Etymology

The specific name is a noun in apposition in reference to the carnivor genus Canis Linnaeus, 1758 , since the general conformation of the epigynum (as in Fig. 47C View Fig ) resembles a basset hound head in frontal view.

Material examined

Holotype

ECUADOR • ♀; 6–8 mi. SE of Baños, N slope of Mt Tungurahua ; [ 1°24′59″ S, 78°25′33″ W]; 13 Feb. 1955; E.S. Schlinger and E.S. Ross leg.; CAS9119044 About CAS .

GoogleMaps

Paratype

ECUADOR • 1 ♀; same data as for holotype; CAS9119045 About CAS . GoogleMaps

Description

Female ( holotype – CASENT9119044)

COLORATION. Cephalothorax brown. Legs red-brown with tibiae, metatarsi and tarsi yellow. Abdomen gray with dorsal anterior border brown ( Fig. 47A View Fig ). Sternum with deep sternal excavations ( Fig. 47B View Fig ).

MEASUREMENTS. Total length 6.70. Carapace 2.69 long, 2.07 wide. Clypeus 0.21. Leg measurements: I: femur 2.13/ patella 0.91/ tibia 1.94/ metatarsus 1.76/ tarsus 1.00/ total 7.74; II: 2.03/ 0.92/ 1.77/ 1.61/ 0.96/ 7.29; III: 1.95/ 0.82/ 1.53/ 1.70/ 0.93/ 6.93; IV: 2.43/ 0.99/ 2.26/ 2.58/ 1.05/ 9.31. Eye diameters: AME 0.19, ALE 0.17, PME 0.15, PLE 0.17. Chelicerae 1.19 long, with four promarginal teeth and five retromarginal denticles.

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

EPIGYNUM. CO slit-shaped, disposed posteriorly in relation to spermathecae, CO large (as wide as the distance between the CO and the posterior margin of the epigynal plate), placed on the posterior half of the epigynal plate, VEP absent, PVP as wide as two times the distance between the anterior and posterior margins, PVP not covering SI, copulatory duct relatively short with large branches pointed anteriorly ( Fig. 47C–F View Fig ).

Distribution

Known only from the type locality ( Fig. 50 View Fig ).