Stethorrhagus mandrillus sp. nov.

urn:lsid:zoobank.org:act: 7761DFE2-F531-4457-8D98-5158A480DFF6

Figs 15–17, 49

Diagnosis

Males of S. mandrillus sp. nov. resembles those of S. tremarctos sp. nov. by the glabrous dVL and AS large, laminar, shifted dorsally (Figs 13A–C, 14A–B, 16A–C, 17A–B). They can be readily distinguished by the AS diamond-shaped in retrolateral view, by the absence of a SeRP and by the VTA bulging (Figs 16A–C, 24A–B) (AS triangular in retrolateral view, embolus inserted between SePP and SeRP and VTA not bulging in S. tremarctos – Figs 13A–C, 14A–B). Females resemble those of S. chalybeius by the anterior margin of the CO delimited by a protruding lip, differing by the lip being entire (Fig. 16D), whereas the lip is divided into two humps in S. chalybeius (Bonaldo & Brescovit 1994: fig. 16d).

Etymology

The specific name is a noun in apposition in reference to the primate genus Mandrillus Ritgen, 1824, since the general conformation of the epigynum (as in Fig. 16D) resembles a mandrill monkey 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 280515.

Paratypes

ECUADOR • 1 ♂; same data as for holotype; MPEG 40001 • 1 ♀; same data as for holotype; QCAZI 280516 • 1 ♀; same data as for holotype; MPEG 40002.

Description

Male (holotype – QCAZI 280515)

COLORATION. Carapace orange-brown (Fig. 15A). Chelicerae orange. Endites, labium and sternum yellow. Legs yellow with distal area of patellae, tibiae and metatarsi gray. Abdomen dark gray dorsally and cream ventrally (Fig. 15A). Sternum with deep sternal excavations (Fig. 15C).

MEASUREMENTS. Total length 6.00. Carapace 2.96 long, 2.25 wide. Clypeus 0.28. Leg measurements: I: femur 2.49/ patella 1.07/ tibia 2.07/ metatarsus 1.94/ tarsus 1.27/ total 8.84; II: 2.24/ 0.99/ 1.92/ 1.85/ 1.26/ 8.26; III: 1.78/ 0.82/ 1.48/ 1.87/ 1.03/ 6.98; IV: 2.55/ 1.02/ 2.13/ 2.64/ 1.18/ 9.52. Eye diameters: AME 0.19, ALE 0.17, PME 0.15, PLE 0.16. Chelicerae 1.31 long, with three promarginal teeth and four 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, p0-0-1, r0; tibia d0, p0, r0, v0-1r-1r; metatarsus d0, p0, r0, v2-2-0. III – femur d1-1-1, p0, r0; tibia d0, p1-1-0, r0-0-1, v1p-2-2; metatarsus d0, p0-1-1, r0-1-1, v2-2-1. IV – femur d1-1-1, p0-0- 1, r0-0-1; tibia d0, p1-1-0, r1-1-0, v1p-1p-2; metatarsus d0, p1-1-0, r1-1-0, v2-2-1.

PALP. Retrolateral surface of femur and patella with cluster of modified hairs, vVL with four modified hairs on apex, dVL glabrous and not protruding, AS diamond-shaped in retrolateral view and shifted dorsally, DL reduced, spermophor situated prolaterally, SeRP absent, TP1 short, conical, situated on distal fold of spermophor, TP2 absent, embolus short and slightly curved in retrolateral view, VTA longer than broad in ventral view (Figs 13A–C, 14A–B).

Female (paratype – MPEG 40002)

COLORATION. As in male, except labium and endites orange, sternum yellow with brown borders (Fig. 15B). Sternum with sternal excavations smaller than the male (Fig. 15D).

MEASUREMENTS. Total length 5.20. Carapace 2.82 long, 2.11 wide. Clypeus 0.24. Leg measurements: I: femur 2.26/ patella 0.88/ tibia 1.84/ metatarsus 1.80/ tarsus 1.20/ total 7.98; II: 2.21/ 0.85/ 1.78/ 1.74/ 1.16/ 7.74; III: 1.92/ 0.84/ 1.36/ 1.60/ 0.83/ 6.55; IV: 2.30/ 0.85/ 1.91/ 2.19/ 1.07/ 8.32. Eye diameters: AME 0.19, ALE 0.17, PME 0.16, PLE 0.16. Chelicerae 1.26 long, with three promarginal teeth and four 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, v1r-1r-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, p0-1-1, r0-1-1, 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, v1p-2-1.

EPIGYNUM. Copulatory opening circular, situated posteriorly in relation to spermathecae, anterior margin not delimited and depressed, depression anterior to CO deep, triangular, VEP present, PVP covering up the first half of SI, wider than long (Figs 13D–E, 14C–D).

Distribution

Known only from the type locality (Fig. 49).