Aname viridiensis sp. nov.

urn:lsid:zoobank.org:act: 01917EEC-D5B2-4CCA-9FE5-88AFA903FCAD

Figs 14, 120

Diagnosis

Males of A. viridiensis sp. nov. can be distinguished from all species for which males are known by the presence of thorn-like setae along the retrolateral edge of the asetose depression on the palp tibia, becoming denser proximally, and a copulatory organ with the bulb tapering gradually into the relatively long embolus (embolus length / bulb length ~2) with distinct curve at about 0.6 of length, and a small hook at the tip of the embolus (Fig. 120J–P).

Females of A. viridiensis sp. nov. are unknown.

Etymology

The specific epithet ‘ viridiensis ’ is a Latin adjective combining the Latin ‘viridis’ meaning ‘green’ or ‘verdant’, and the suffix ‘- ensis ’ indicating connection to a place, referencing the type locality of this species in the lush tropical forest of the McIlwraith Range in Cape York.

Type material

Holotype

AUSTRALIA – Queensland • ♂; McIlwraith Range, Upper Peach Creek; 13°44′ S, 143°20′ E; 25 Sep. 2017; K. Alard and D. DeBusch leg.; QMB S108682.

Description

Male (holotype, QMB S108682)

GENERAL (Fig. 120A–Q). Body length 20.22, in good condition, colour presumably faded due to preservation.

DORSAL PROSOMA (Fig. 120A, E–F). Carapace length 7.43, width 6.25, length/width 1.19, clypeus to fovea length/carapace length 0.70, caput width/carapace width 0.62, carapace dark red-brown, caput slightly darker than thorax, reflective setae present, light on caput, light on thorax, fovea procurved, fovea width/carapace length 0.16 (Fig. 120A, F); chelicerae dark red-brown, rastellum absent or inconspicuous, chelicerae length/carapace length 0.62 (Fig. 120A); eye group rectangular, width/length 2.1, eye tubercle present (Fig. 120E).

ABDOMEN (Fig. 120B, D). Abdomen length 7.60, dark grey, dorsal pattern absent, with some reflective setae on anterior portion.

VENTRAL PROSOMA (Fig. 120C, G–I). Labium cuspules absent (Fig. 120H); maxillae heel distinct, cuspules present, count =about 72, extending posteriorly onto heel, extending laterally about 25% of maxillae length (Fig. 120C, I); coxae cuspules absent, thorn-like setae on prolateral face present (Fig. 120C, I); sternum length/width 1.20, central sternum with consistent covering of moderate setae, row of longer setae around posterior edges (Fig. 120G–H); posterior sigilla ovoid, central sternum to posterior sigilla length/sternum length 0.26, posterior sigilla length/sternum length 0.14 (Fig. 120G–H); other sigilla small, round and lateral (Fig. 120G–H).

LEG I (Fig. 120N–Q). Leg I red-brown, lighter on distal metatarsus and tarsus, reflective setae on dorsal femur, femur length 5.89, patella length 4.02, tibia length 4.67, metatarsus length 4.27, tarsus length 2.71, total length 21.56, leg I length/carapace length 2.90 (Fig. 120N–O); scopulae on distal metatarsus and tarsus (Fig. 120N–O); spine count Fe D 1, Fe PL 1, Pa PL 2 (proximal rubbed off), Ti PL 0, Ti RL 0, Me PL 0, Me RL 0, Ta 0 (Fig. 120N–O); tibia length/width [TIL/TID] 3.60, even width along length, spur present, digitiform, knuckle absent, megaspine angled at 29 degrees, length to distal face of spur/ tibia length [TIS/TIL] 0.56, spur height/tibia width [TISH/TID] 0.66, megaspine length/tibia length 0.26 (Fig. 120N–P); metatarsus slightly sinuous, proximal excavation present, excavation concave with slight heel, heel semi-sharp, excavation length/metatarsus length [MIPEL/MIL] 0.52, metatarsus length/ width [MIL/MID] 3.61 (Fig. 120N–O, Q).

PEDIPALP (Fig. 120J–M). Tibia length 3.09, width 1.23, length/width [PTL/PTD] 2.51, asetose depression present, depression length/palp tibia length [PDL/PTL] 0.53, retrolateral face with short, thorn-like setae along retrolateral edge of depression, getting denser proximally, ventral face with two elongate bristle-like setae below depression, prolateral face with two disto-ventral spines and a single medial spine, disto-medial spine present (Fig. 120J–K); patella prolateral face with 2 spines (Fig. 120J–K); cymbium with scopulae present distally (Fig. 120J–K); copulatory organ total length 1.50, length/palp tibia length 0.49 (Fig. 120L–M); bulb length/width 0.86 (Fig. 120L–M); embolus tapering from bulb, attenuate, swollen base tapering before strong curve to sinuous tip, one strong band, at about 0.7 of length, small hook on tip, width at base/bulb width 0.27, embolus length/bulb length 2.00 (Fig. 120L–M).

Distribution and natural history

Aname viridiensis sp. nov. occurs in far northern Queensland, in the Cape York Peninsula bioregion, in the McIlwraith Range near Coen (Fig. 14). The form of burrows constructed by spiders of this species is unknown.