Stethorrhagus felis, Xavier & Brescovit & Bonaldo, 2025

Stethorrhagus felis sp. nov.

urn:lsid:zoobank.org:act:

Figs 34–36 View Fig View Fig View Fig , 50 View Fig

Diagnosis

Males of S. felis sp. nov. resemble those of S. callithrix sp. nov. and S. bradypus sp. nov. by the bifid VL, with thick modified hairs in both vVL and dVL, and dVL protruding ( Figs 32A–B View Fig , 33A–B View Fig , 35A–C View Fig , 36A–B View Fig , 38A–C View Fig , 39A–C View Fig ). They differ from those of S. callithrix by the SePP with a blunt tip directed apically ( Figs 35A–C View Fig , 36A–B View Fig ) (SePP with a pointed tip directed retrolaterally in S. callithrix – Figs 32A– B View Fig , 33A–B View Fig ) and from those of S. bradypus by the tibia with a DL and tegulum with TP1 (both DL and TP1 absent in S. bradypus – Figs 38A–C View Fig , 39A–C View Fig ). Females resemble those of S. canis sp. nov. and S. ovis sp. nov. by the CO slit-shaped, disposed posteriorly in relation to SI ( Figs 35D–E View Fig , 36C–D View Fig ). They differ from those of S. canis by the CO relatively small (as wide as five times the distance between CO and posterior margin of the epigynal plate), placed on the anterior half of the epigynal plate ( Figs 35D View Fig , 36C View Fig ) (CO large, as wide as the distance between CO and posterior margin of epigynal plate, placed on the posterior half of the epigynal plate in S. canis – Fig. 47C–F View Fig ) and from those of S. ovis by the VEP posterior margin procurved ( Figs 35D View Fig , 36C View Fig ) (VEP posterior margin nearly straight in S. ovis – Figs 29C View Fig , 30C View Fig ).

Etymology

The specific name is a noun in apposition in reference to the carnivore genus Felis Linnaeus, 1758 , since the general conformation of the epigynum (as in Fig. 35D View Fig ) resembles a cat head in frontal view.

Material examined

Holotype

ECUADOR • ♂; Napo, Yanayacu, Cantón Quijos ; 00°35′57.8″ S, 77°53′25.3″ W; elev. 2132 m; 23–30 Nov. 2009; A.B. Bonaldo leg.; QCAZI 280518 .

GoogleMaps

Paratypes

ECUADOR • 1 ♀; same data as for holotype; QCAZI 280519 GoogleMaps • 1 ♂, 1 ♀; same data as for holotype; QCAZI 280520 GoogleMaps • 1 ♂; same data as for holotype; MPEG 40144 View Materials GoogleMaps • 1 ♀; same data as for holotype; MPEG 40145 View Materials . GoogleMaps

Description

Male ( holotype – QCAZI 280518)

COLORATION. Carapace, chelicerae, endites and labium red-brown. Legs yellow. Abdomen brown with two rows of six white spots in the dorsal posterior third ( Fig. 34A View Fig ). Ventrally cream with longitudinal brownish band. Sternum brown with deep sternal excavations ( Fig. 34C View Fig ).

MEASUREMENTS. Total length 6.07. Carapace 2.84 long, 2.30 wide. Clypeus 0.26. Leg measurements: I: femur 2.57/ patella 1.10/ tibia 2.33/ metatarsus 2.25/ tarsus 1.34/ total 9.59; II: 2.28/ 1.03/ 1.87/ 1.92/ 1.17/ 8.27; III: 1.80/ 0.86/ 1.47/ 1.70/ 0.93/ 6.76; IV: 2.60/ 0.99/ 2.15/ 2.65/ 1.08/ 9.47. Eye diameters: AME 0.16, ALE 0.15, PME 0.15, PLE 0.15. Chelicerae 1.46 long, with three promarginal teeth and five retromarginal denticles.

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 – femur d1-1-0, p0, r0; tibia d0, p0, r0, v0-2-2; metatarsus d0, p0, r0, v2-2-0. III – femur d1-1-0, p0, r0; tibia d0, p1-1-0, r1-1-0, v2-2-2; metatarsus d0, p0-1-0, r0-1-0, v2-2-1. IV – 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.

PALP. RTA with vVL and dVL with modified hairs, dVL and vVL almost the same size in retrolateral view, AS absent, DL reduced, VTA longer than wide, with distal surface about ten times longer than proximal surface, spermophor situated ventro-prolaterally, TP1 small, situated prolaterally in distal fold of the spermophor, TP2 absent, SePP with blunt tip directed apically, embolus long and not curved. RTA bilobated with modified setae on the apex of both lobes, VTA longer than wide ( Figs 35A–C View Fig , 36A–B View Fig ).

Female ( paratype – QCAZI 280519)

COLORATION. As in male, except abdomen totally gray ventrally ( Fig. 34B View Fig ). Sternum with sternal excavations as in male ( Fig. 34D View Fig ).

MEASUREMENTS. Total length 8.18. Carapace 2.90 long, 2.30 wide. Clypeus 0.23. Leg measurements: I: femur 2.33/ patella 1.13/ tibia 2.07/ metatarsus 1.88/ tarsus 1.18/ total 8.59; II: 2.32/ 0.99/ 1.83/ 1.79/ 1.09/ 8.02; III: 1.76/ 0.97/ 1.46/ 1.78/ 0.96/ 7.93; IV: 2.56/ 1.13/ 2.19/ 2.57/ 1.14/ 9.59. Eye diameters: AME 0.17, ALE 0.14, PME 0.15, PLE 0.14. Chelicerae 1.65 long, with three promarginal teeth and five retromarginal denticles.

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 – femur d1-0-0, p0, r0, tibia d0, p0, r0, v1r-2-2-0; metatarsus d0, p0, r0, v2-2-0. III – femur d1-1-0, p0, r0; tibia d0, p1-1-0, r1-1-0, v2-2-2; metatarsus d0, p0-1-0, r0-1-0, v2-2-1. IV – 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.

EPIGYNUM. CO disposed anteriorly in relation to spermathecae, CO U-shaped along posterior margin, VEP gently procurved, placed posteriorly on epigynal plate, PVP wider than long, covering ⅔ of SI, PVP two times the distance between anterior and posterior margins, PVP with slightly procurved notch on anterior margin, copulatory duct relatively long, with reinforcement nods anteriorly to CO ( Figs 35D–E View Fig , 36C–D View Fig ).

Distribution

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