Aname namoi sp. nov.

urn:lsid:zoobank.org:act: BFAD7E66-57BB-41F7-99AF-4592C6FC5049

Figs 14, 115

Diagnosis

Males of A. namoi 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), the presence of a short embolus (embolus length/ bulb length <1.5) that has a bend near the base before a straight distal section, and a long proximal excavation (excavation length / metatarsus length ~ 0.5) on metatarsus I (Fig. 115L–Q).

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

Etymology

The specific epithet ‘ namoi ’ is a noun in apposition, referencing the distribution of this species around the Namoi River in northern New South Wales.

Type material

Holotype

AUSTRALIA – New South Wales • ♂; Walgett, “ Kalamos ”; 29°54′ S, 148°10′ E; 23 Nov.–13 Dec. 1999; F.J. Christie, P. Flemons and M.G. Elliott leg.; pitfall trap; AMS KS71468.

Paratype

AUSTRALIA – New South Wales • 1 ♂; same data as for holotype; AMS KS77907.

Other material examined

AUSTRALIA – New South Wales • 1 ♂; Pilliga, ‘ Womba’; 30°24′ S, 148°42′ E; Feb. 2001; I. Oliver leg.; pitfall trap; AMS KS80709 .

Description

Male (holotype, AMS KS77907)

GENERAL (Fig. 115A–Q). Body length 17.35, in good condition, colour presumably faded due to preservation.

DORSAL PROSOMA (Fig. 115A, E–F). Carapace length 5.86, width 5.03, length/width 1.16, clypeus to fovea length/carapace length 0.71, caput width/carapace width 0.65, carapace red-brown, reflective setae present, moderate on caput, very light on thorax, fovea procurved, fovea width/carapace length 0.11 (Fig. 115A, F); chelicerae dark red-brown, rastellum absent or inconspicuous, chelicerae length/carapace length 0.66 (Fig. 115A); eye group rectangular, width/length 2.07, eye tubercle present (Fig. 115E).

ABDOMEN (Fig. 115B, D). Abdomen length 7.07, dark grey, dorsal pattern absent, with reflective setae on anterior portion.

VENTRAL PROSOMA (Fig. 115C, G–I). Labium cuspules absent (Fig. 115H); maxillae heel distinct, cuspules present, count =about 90, extending posteriorly onto heel, extending laterally about 35% of maxillae length (Fig. 115C, I); coxae cuspules absent, thorn-like setae on prolateral face present (Fig. 115C, I); sternum length/width 1.10, central sternum with consistent covering of short setae, row of longer setae around posterior edges (Fig. 115G–H); posterior sigilla ovoid, central sternum to posterior sigilla length/ sternum length 0.29, posterior sigilla length/sternum length 0.11 (Fig. 115G–H); other sigilla small, round and lateral (Fig. 115G–H).

LEG I (Fig. 115N–Q). Leg I red-brown, lighter on distal metatarsus and tarsus, femur length 4.88, patella length 3.00, tibia length 3.38, metatarsus length 3.33, tarsus length 2.08, total length 16.68, leg I length/ carapace length 2.85 (Fig. 115N–O); scopulae on distal metatarsus and tarsus (Fig. 115N–O); 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. 115N–O); tibia length/width [TIL/TID] 2.85, even width along length, spur present, triangular, knuckle absent, megaspine angled at 21 degrees, length to distal face of spur/tibia length [TIS/TIL] 0.51, spur height/tibia width [TISH/ TID] 0.40, megaspine length/tibia length 0.17 (Fig. 115N–P); metatarsus slightly sinuous, proximal excavation present, excavation concave with pronounced heel, heel semi-sharp, excavation length/ metatarsus length [MIPEL/MIL] 0.52, metatarsus length/width [MIL/MID] 3.74 (Fig. 115N–O, Q).

PEDIPALP (Fig. 115J–M). Tibia length 2.26, width 0.96, length/width [PTL/PTD] 2.35, asetose depression present, depression length/palp tibia length [PDL/PTL] 0.54, 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, disto-medial spine absent (Fig. 115J–K); patella prolateral face with 2 spines (Fig. 115J–K); cymbium with scopulae present distally (Fig. 115J–K); copulatory organ total length 1.04, length/palp tibia length 0.46 (Fig. 115L–M); bulb length/width 1.01 (Fig. 115L–M); embolus slightly reflexed, attenuate, protruding laterally with strong basal curve, one strong bend, at about 0.2 of length, width at base/bulb width 0.17, embolus length/bulb length 1.04 (Fig. 115L–M).

Distribution and natural history

Aname namoi sp. nov. occurs in northern New South Wales, in the Darling Riverine Plains bioregion, where it is known from two locations, near Pilliga and Walgett (Fig. 14). The form of burrows constructed by spiders of this species is unknown.