Aname distorta, Wilson & Harvey & Simmons & Rix, 2025

Aname distorta sp. nov.

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Figs 14 View Fig , 110 View Fig

Diagnosis

Males of A. distorta sp. nov. can be distinguished from all species for which males are known by a moderate to large body size (carapace length> 4.0 mm) and the presence of an extremely long embolus (embolus length / bulb length> 4) ( Fig. 110J–M View Fig ).

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

Etymology

The specific epithet ‘ distorta ’ is a Latin adjective meaning ‘twisted’ or ‘distorted’, in reference to both the deformed leg I and pedipalp of the holotype and only known specimen of the species, and to the unusually long embolus of the species.

Type material

Holotype

AUSTRALIA – Queensland • ♂; Drummond Range , summit; 23°32′ S, 147°18′ E; 920 m a.s.l.; 18 Dec. 2000 – 27 Mar. 2001; D.J. Cook and G.B. Monteith leg.; pitfall trap, open forest; QMB S63018 .

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Description

Male (holotype, QMB S63018)

GENERAL ( Fig. 110A–Q View Fig ). Body length 21.82, in good condition, colour presumably faded due to preservation.

DORSAL PROSOMA ( Fig. 110A, E–F View Fig ). Carapace length 7.34, width 6.43, length/width 1.14, clypeus to fovea length/carapace length 0.72, caput width/carapace width 0.64, carapace dark red-brown, reflective setae present, light on caput, light on thorax, fovea procurved, fovea width/carapace length 0.16 ( Fig. 110A, F View Fig ); chelicerae dark red-brown, rastellum absent or inconspicuous, chelicerae length/carapace length 0.75 ( Fig. 110A View Fig ); eye group rectangular, width/length 1.95, eye tubercle present ( Fig. 110E View Fig ).

ABDOMEN ( Fig. 110B, D View Fig ). Abdomen length 8.12, grey, dorsal pattern absent, with consistent cover of short setae.

VENTRAL PROSOMA ( Fig. 110C, G–I View Fig ). Labium cuspules absent ( Fig. 110H View Fig ); maxillae heel distinct, cuspules present, count= about 160, extending posteriorly onto heel, extending laterally about 25% of maxillae length ( Fig. 110C, I View Fig ); coxae cuspules absent, thorn-like setae on prolateral face present ( Fig. 110C, I View Fig ); sternum length/width 1.23, many setae rubbed off, row of longer setae around posterior edges ( Fig. 110G–H View Fig ); posterior sigilla ovoid, central sternum to posterior sigilla length/sternum length 0.25, posterior sigilla length/sternum length 0.14 ( Fig. 110G–H View Fig ); other sigilla small, round and lateral ( Fig. 110G–H View Fig ).

LEG I ( Fig. 110N–Q View Fig ). Leg I red-brown, lighter on distal metatarsus and tarsus, femur length 6.30, patella length 4.30, tibia length 4.95, metatarsus length 4.58, tarsus length 3.14, total length 23.27, leg I length/ carapace length 3.17 ( Fig. 110N–O View Fig ); scopulae on distal metatarsus and tarsus ( Fig. 110N–O View Fig ); spine count Fe D 1, Fe PL 1, Pa PL 2, Ti PL 0, Ti RL 0, Me PL 0, Me RL 0, Ta 0 ( Fig. 110N–O View Fig ); tibia length/width [TIL/TID] 3.71, even width along length, spur present, intermediate triangular/digitiform, knuckle present, megaspine angled at 21 degrees, length to distal face of spur/tibia length [TIS/TIL] 0.43, spur height/tibia width [TISH/TID] 0.62, megaspine length/tibia length 0.27 ( Fig. 110N–P View Fig ); metatarsus slightly sinuous, proximal excavation present, excavation concave with pronounced heel, heel rounded, excavation length/metatarsus length [MIPEL/MIL] 0.41, metatarsus length/width [MIL/ MID] 3.98 ( Fig. 110N–O, Q View Fig ).

PEDIPALP ( Fig. 110J–M View Fig ). Tibia length 3.78, width 1.14, length/width [PTL/PTD] 3.31, asetose depression present, depression length/palp tibia length [PDL/PTL] 0.79, retrolateral face with consistent covering of light setae, ventral face with one elongate bristle-like seta below depression, prolateral face with two disto-ventral spines, disto-medial spine absent ( Fig. 110J–K View Fig ); patella prolateral face with 2 spines ( Fig. 110J–K View Fig ); cymbium with scopulae present distally ( Fig. 110J–K View Fig ); copulatory organ total length 3.32, length/palp tibia length 0.88 ( Fig. 110L–M View Fig ); bulb length/width 0.84 ( Fig. 110L–M View Fig ); embolus demarcated and roughly perpendicular to bulb, attenuate, tapering and curving relatively evenly to point, one strong bend, at about 0.6 of length, slight bend before tip, width at base/bulb width 0.28, embolus length/bulb length 4.64 ( Fig. 110L–M View Fig ).

Distribution and natural history

Aname distorta sp. nov. occurs in central Queensland, in the Brigalow Belt North bioregion, where it is known from one location on the Drummond Range, west of Emerald ( Fig. 14 View Fig ). The form of burrows constructed by spiders of this species is unknown.