Aname barrema Raven 1985
Creators: name: Wilson, Jeremy D.
name: Harvey, Mark S.
name: Simmons, Leigh W.
name: Rix, Michael G.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Anamidae
Aname
Aname barrema

description: Aname barrema Raven, 1985
Figs 1, 10, 64–65
Aname barrema Raven, 1985: 382, figs 5, 26, 40, 47.
non Aname barrema – Raven 1985 (pars): figs 13, 33, 70–74 (illustrated female allotype QMB S1239 [Braemar State Forest], and female paratypes QMB S1243 [Girraween National Park], QMB S1244 [Moombah], QMB S1247 [Yuleba], and QMB S1245 [Stanthorpe], here identified as A. platensis sp. nov. [QMB S1243], and A. eddieorum sp. nov. [all others]).
Diagnosis
Males of A. barrema can be distinguished from all species for which males are known except A. inimica and A. magnifica sp. nov. by a moderate to large body size (carapace length>4.0 mm), the presence of a copulatory organ with the bulb tapering into a long embolus (embolus length/ bulb length>1.5) with a slightly thicker basal section that narrows and curves sharply at about 0.6 of length, a patch of thicker setae proximally of asetose depression, and the absence of a pronounced, sharp heel on metatarsus I (as in pallida -complex species) (Fig. 64A–Q). Males of A. barrema can be distinguished from those of A. inimica by the presence of a longer embolus (embolus length / bulb length>1.5; cf. ~ 1.2) (Fig. 64L– M; cf. Fig. 67). Males of A. barrema can be distinguished from those of A. magnifica by the presence of a longer asetose depression on the palp tibia (depression length / tibia length ~0.7; cf. ~ 0.6 in A. magnifica) and a thinner metatarsus I (metatarsus I length / width ~ 4.5; cf. ~ 3.5 in A. magnifica) (Fig. 64K, Q; cf. Fig. 69).
Females of A. barrema can be distinguished from all species for which females are known except A. distincta and A. magnifica sp. nov. by the presence of spermathecae with two vesicles, with relatively long and straight lateral vesicles (lateral vesicle length / genitalia width>0.25) that don’t curve medially at their ends, and very short, straight medial vesicles (medial vesicle length / lateral vesicle length <0.5) (Fig. 65D, L). Females of A. barrema can be distinguished from those of A. magnifica by the presence of smaller posterior sigilla on the sternum (posterior sigilla length/ sternum length ~ 0.14; cf. ~ 0.18) and spermathecae with less triangular, more tubular lateral vesicles (Fig. 65G–H, L; cf. Fig. 70). Females of A. barrema can be distinguished from those of A. distincta by the presence of spermathecae with less elongate lateral vesicles (lateral vesicle length/ width ~ 1.84; cf. ~ 1.95 in A. distincta), with slightly widened crowns (Fig. 65L; cf. Fig. 66).
Type material
Holotype
AUSTRALIA – Queensland • ♂; Braemar State Forest; 27°13′ S, 150°50′ E; 15 Oct. 1997 – 19 Oct. 1979; R.J. Raven leg.; QMB S1238.
Other material examined
AUSTRALIA – Queensland • 1 ♂; Gurgeena Plateau; 25°27′ S, 151°22′ E; 22 Aug.–10 Oct. 1998; G.B. Monteith leg.; pitfall trap, open forest; QMB S63025 • 1 ♀; Binjour, Swains Road; 25°32′ S, 151°30′ E; 373 m a.s.l.; 24 Apr. 2023; J.D. Wilson and M.G. Rix leg.; excavated, in leaf litter, wet sclerophyll forest; QMB S118308 • 1 ♂; Maryborough; 25°33′ S, 152°41′ E; QMB S26091 • 1 ♂; St Mary State Forest; 25°44′ S, 152°31′ E; R. Zellow leg.; QMB S26093 • 2 ♂♂; Miles, E of Waituna; 26°39′ S, 149°51′ E; 361 m a.s.l.; 26 Jun.–5 Sep. 2006; R.J. Raven, B. Baehr and A. Amey leg.; QMB S76033 • 1 ♂; Geham, N of Toowoomba; 27°20′ S, 151°58′ E; 4 Apr. 2004; R. Neilson leg.; open eucalypt woodland; QMB S61956 • 1 ♂; Kingsthorpe; 27°30′ S, 151°46′ E; 15 Sep. 2001; T. Harding leg.; QMB S57055. – New South Wales • 1 ♂; Northstar, “Edington”; 28°56′ S, 150°23′ E; 23 Sep. 1997; S. Hardcastle leg.; hand collected, found in house after rain; QMB S35483 • 1 ♂; Northstar; 28°56′ S, 150°23′ E; 14 Oct. 1997; S. Hardcastle leg.; QMB S35507 • 1 ♂; Northstar, “Edington”; 28°56′ S, 150°23′ E; 20 Aug. 2007; S. Hardcastle leg.; hand collected, found inside house during wet weather; QMB S79681.
Description
Male (holotype, QMB S1238)
GENERAL (Fig. 64A–Q). Body length 16.43, in moderate condition, colour faded significantly due to preservation.
DORSAL PROSOMA (Fig. 64A, E–F). Carapace length 7.01, width 6.02, length/width 1.16, clypeus to fovea length/carapace length 0.75, caput width/carapace width 0.66, carapace orange, caput slightly darker than thorax, reflective setae present, light on caput, light on thorax, fovea procurved, fovea width/ carapace length 0.14 (Fig. 64A, F); chelicerae orange, rastellum absent or inconspicuous, chelicerae length/carapace length 0.42 (Fig. 64A); eye group rectangular, width/length 2.23, eye tubercle present (Fig. 64E).
ABDOMEN (Fig. 64B, D). Abdomen length 6.33, yellow-brown, dorsal pattern absent, with consistent cover of short setae.
VENTRAL PROSOMA (Fig. 64C, G–I). Labium cuspules absent (Fig. 64H); maxillae heel distinct, cuspules present, count =about 160, extending posteriorly onto heel, extending laterally about 40% of maxillae length (Fig. 64C, I); coxae cuspules absent, thorn-like setae on prolateral face present (Fig. 64C, I); sternum length/width 1.15, some setae rubbed off, central sternum with consistent covering of short setae, row of longer setae around posterior edges (Fig. 64G–H); posterior sigilla ovoid, central sternum to posterior sigilla length/sternum length 0.27, posterior sigilla length/sternum length 0.16 (Fig. 64G– H); other sigilla small, round and lateral (Fig. 64G–H).
LEG I (Fig. 64N–Q). Leg I yellow, darker on femur, femur length 6.24, patella length 3.83, tibia length 4.45, metatarsus length 4.29, tarsus length 2.59, total length 21.40, leg I length/carapace length 3.05 (Fig. 64N–O); scopulae on distal metatarsus and tarsus (Fig. 64N–O); spine count Fe D 2, Fe PL 1, Pa PL 2, Ti PL 0, Ti RL 0, Me PL 0, Me RL 0, Ta 0 (Fig. 64N–O); tibia length/width [TIL/TID] 3.56, even width along length, spur present, intermediate triangular/digitiform, knuckle absent, megaspine angled at 25 degrees, length to distal face of spur/tibia length [TIS/TIL] 0.47, spur height/tibia width [TISH/ TID] 0.65, megaspine length/tibia length 0.24 (Fig. 64N–P); metatarsus relatively straight, proximal excavation present, excavation concave with slight heel, heel rounded, excavation length/metatarsus length [MIPEL/MIL] 0.47, metatarsus length/width [MIL/MID] 4.50 (Fig. 64N–O, Q).
PEDIPALP (Fig. 64J–M). Tibia length 2.92, width 1.11, length/width [PTL/PTD] 2.62, asetose depression present, depression length/palp tibia length [PDL/PTL] 0.72, retrolateral face with patch of long setae proximally of asetose depression, ventral face with two elongate bristle-like setae below depression, prolateral face with patch of spines on distal half, disto-medial spine absent (Fig. 64J–K); patella prolateral face with 2 (proximal rubbed off) spines (Fig. 64J–K); cymbium with scopulae present distally (Fig. 64J–K); copulatory organ total length 1.74, length/palp tibia length 0.59 (Fig. 64L–M); bulb length/width 0.93 (Fig. 64L–M); embolus tapering from bulb, attenuate, swollen base tapering before strong curve to sinuous tip, one strong bend, at about 0.6 of length, width at base/bulb width 0.37, embolus length/bulb length 1.91 (Fig. 64L–M).
Female (QMB S118308)
GENERAL (Fig. 65A–L). Body length 22.54, in good condition.
DORSAL PROSOMA (Fig. 65A, E–F). Carapace length 8.89, width 7.04, length/width 1.26, clypeus to fovea length/carapace length 0.74, caput width/carapace width 0.79, carapace red-brown, reflective setae present, moderate on caput, moderate on thorax, fovea procurved, fovea width/carapace length 0.17 (Fig. 65A, F); chelicerae dark golden-brown, rastellum absent or inconspicuous, chelicerae length/carapace length 0.52 (Fig. 65A); eye group rectangular, width/length 2.08, eye tubercle present (Fig. 65E).
ABDOMEN (Fig. 65B, D). Abdomen length 8.99, grey-brown, dorsal pattern absent, with consistent cover of short setae.
VENTRAL PROSOMA (Fig. 65C, G–I). Labium cuspules absent (Fig. 65H); maxillae heel distinct, cuspules present, count =about 135, extending posteriorly onto heel, extending laterally about 30% of maxillae length (Fig. 65C, I); coxae cuspules absent, thorn-like setae on prolateral face present (Fig. 65C, I); sternum length/width 1.14, central sternum with consistent covering of short setae, row of longer setae around posterior edges (Fig. 65G–H); posterior sigilla ovoid, central sternum to posterior sigilla length/ sternum length 0.24, posterior sigilla length/sternum length 0.14 (Fig. 65G–H); other sigilla small, round and lateral (Fig. 65G–H).
LEG I (Fig. 65J–K). Leg I coffee-brown, reflective setae on dorsal femur, femur length 6.60, patella length 4.28, tibia length 4.49, metatarsus length 3.77, tarsus length 2.37, total length 21.52, leg I length/ carapace length 2.42; scopulae on distal metatarsus and tarsus; spine count Fe D 1, Fe PL 1, Pa PL 2, Ti PL 1, Ti RL 4 (weak), Me PL 2, Me RL 3, Ta 0; tibia length/width [TIL/TID] 3.34.
GENITALIA (Fig. 65D, L). Epigastric furrow unmodified (Fig. 65D); spermathecae with two vesicles each (Fig. 65L); lateral vesicle relatively straight, length 0.72, lateral vesicle length/genitalia width 0.52, length/width at base 1.84, crown slightly wider than stem (Fig. 65L); medial vesicle short, relatively straight and projecting ventrally, medial vesicle length/genitalia width 0.16, length/width 2.12, medial vesicle length/lateral vesicle length 0.31 (Fig. 65L).
Distribution and natural history
Aname barrema has a wide distribution in northern New South Wales and south-eastern Queensland, predominantly in the Brigalow Belt South bioregion. It extends from Northstar in northern New South Wales north to Eidsvold in Queensland, and from Miles east to Maryborough (Fig. 10). It constructs an open, silk-lined burrow without silk outside of the entrance, on an angle, and with a hidden secondary ‘wishbone’ entrance (Fig. 10).
Remarks
Specimens from near the town of Maryborough occur in a different bioregion to other specimens (and the type locality) of the species, and are smaller on average than those from further west. Future molecular work should seek to test whether these specimens are actually conspecific.
description: Published as part of Wilson, Jeremy D., Harvey, Mark S., Simmons, Leigh W. & Rix, Michael G., 2025, An integrative systematic revision of the wishbone spiders (Araneae: Anamidae: Aname L. Koch, 1873) of subtropical and tropical eastern Australia, with the description of 55 new species, pp. 1-298 in European Journal of Taxonomy 985 on pages 100-103, DOI: 10.5852/ejt.2025.985.2845, http://zenodo.org/record/15169471