Aname distincta ( Rainbow, 1914 )

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, European Journal of Taxonomy 985, pp. 1-298 : 103-104

Aname distincta ( Rainbow, 1914)

Figs 10 , 66

Ixamatus distinctus Rainbow, 1914: 237 , figs 48–49.

Aname distincta – Raven 1981: 338 (transfer of Ixamatus distinctus Rainbow, 1914 to Aname L. Koch, 1873 ); 1985: 393, fig. 66.

Aname “MYG460” – Harvey et al. 2018: fig. 4. — Rix et al. 2021: figs 3, 5, 7.

non Aname distincta – Raven 1985 (pars): figs 19, 36, 48, 67–69 (illustrated male QMB S1267 [Eidsvold region], and females QMB S1263 [Cooyar], QMB S1268 [Gailes], and EUQ [Bunya Mountains] assigned to A. distincta ( Rainbow, 1914) , here identified as A. attenuata ( Rainbow & Pulleine, 1918)) .

Diagnosis

Males of A. distincta are unknown.

Females of A. distincta can be distinguished from all species for which females are known except A. barrema 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. 66D, L ). Females of A. distincta 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. 66G–H, L ; cf. Fig. 70 ). Females of A. distincta can be distinguished from those of A. barrema by the presence of spermathecae with more elongate lateral vesicles (lateral vesicle length/ width ~ 1.95; cf. ~ 1.84 in A. barrema ), with narrower crowns ( Fig. 66L ; cf. Fig. 65 ).

Type material

Syntypes

AUSTRALIA – Queensland • 1 ♀; Eidsvold ; 25°22′ S, 151°07′ E; W.J. Rainbow leg.; AMS KS8188 (ex. AM K34490) • 1 ♀; Eidsvold; 25°22′ S, 151°07′ E; W.J. Rainbow leg.; AMS KS131254 (ex. AMS KS8188, AM K34490) • 1 ♀; Eidsvold ; 25°22′ S, 151°07′ E; W.J. Rainbow leg.; AMS KS131255 (ex. AMS KS8188, AM K34490) .

Other material examined

AUSTRALIA – Queensland • 1 ♀; Bancroft property, Oak Park-Quaggy Road , ~ 50 km W of Eidsvold; 25°26′ S, 150°42′ E; 419 m a.s.l.; 2 Jun. 2014; M.G. Rix and S.E. Harrison leg.; excavated, open burrow, vine scrub; WAM T133260 .

Description

Female (syntype, AMS KS8188)

GENERAL ( Fig. 66A–L ). Body length 25.33, in moderate condition, significantly faded and tissue hardened due to long-term preservation.

DORSAL PROSOMA ( Fig. 66A, E–F ). Carapace length 9.70, width 7.81, length/width 1.24, clypeus to fovea length/carapace length 0.71, caput width/carapace width 0.78, carapace orange-brown, reflective setae present, light on caput, light on thorax, fovea procurved, fovea width/carapace length 0.21 ( Fig. 66A, F ); chelicerae red-brown, rastellum absent or inconspicuous, chelicerae length/carapace length 0.63 ( Fig. 66A ); eye group rectangular, width/length 1.9, eye tubercle present ( Fig. 66E ).

ABDOMEN ( Fig. 66B, D ). Abdomen length 9.17, tan-brown, dorsal pattern absent, with some evidence of reflective setae, and consistent cover of short setae.

VENTRAL PROSOMA ( Fig. 66C, G–I ). Labium cuspules absent ( Fig. 66H ); maxillae heel distinct, cuspules present, count =about 132, extending posteriorly onto heel, extending laterally about 30% of maxillae length ( Fig. 66C, I ); coxae cuspules absent, thorn-like setae on prolateral face present ( Fig. 66C, I ); sternum length/width 1.18, some setae rubbed off, central sternum with consistent covering of short setae, row of longer setae around posterior edges ( Fig. 66G–H ); posterior sigilla ovoid, central sternum to posterior sigilla length/sternum length 0.23, posterior sigilla length/sternum length 0.14 ( Fig. 66G– H ); other sigilla small, round and lateral ( Fig. 66G–H ).

LEG I ( Fig. 66J–K ). Leg I orange-brown, reflective setae on dorsal femur, femur length 6.88, patella length 4.56, tibia length 4.42, metatarsus length 4.05, tarsus length 2.43, total length 22.33, leg I length/ carapace length 2.30; scopulae on distal metatarsus and tarsus; spine count Fe D 2, Fe PL 1 (rubbed off), Pa PL 2 (both rubbed off), Ti PL 2, Ti RL 4, Me PL 0, Me RL 2, Ta 0; tibia length/width [TIL/TID] 2.83.

GENITALIA ( Fig. 66D, L ). Epigastric furrow unmodified ( Fig. 66D ); spermathecae with two vesicles each ( Fig. 66L ); lateral vesicle relatively straight, length 0.90, lateral vesicle length/genitalia width 0.57, length/width at base 1.95, crown un-demarcated ( Fig. 66L ); medial vesicle short, relatively straight and projecting ventrally, medial vesicle length/genitalia width 0.20, length/width 1.93, medial vesicle length/lateral vesicle length 0.34 ( Fig. 66L ).

Distribution and natural history

Aname distincta occurs in central Queensland, in the Brigalow Belt South bioregion, near the town of Eidsvold ( Fig. 10 ). The form of burrows constructed by spiders of this species is unknown, but is likely to be similar to that of other barrema -complex species ( Fig. 10 ).

Remarks

Most specimens previously identified as A. distincta in Raven (1985) actually represent A. attenuata , and consequently, true A. distincta is only known from four female specimens, all from near the town of Eidsvold.

Figures

Fig. 10. Aname barrema-complex species habitus images, distribution map, and burrow architecture. Points on the map represented by a star are type localities. Note that intraspecific variation occurs in both physical appearance and burrow architecture, and images shown here should be treated only as examples, not used for species diagnosis.

Fig. 66. Aname distincta Rainbow, 1914, ♀ syntype (AMS KS8188). A. Cephalothorax, dorsal view. B. Abdomen, dorsal view. C. Cephalothorax, ventral view. D. Abdomen, ventral view. E. Ocular region. F. Fovea. G. Sternal sigilla, left view. H. Sternum and labium. I. Maxilla and coxae I–II, left view.J. Left leg I, prolateral view. K. Left leg I, retrolateral view. L. Internal genitalia, dorsal view. Scale bars: A–B, J =2 mm; L=1 mm.

Fig. 70. Aname magnifica sp. nov., paratype, ♀ (AMS KS16758). A. Cephalothorax, dorsal view. B. Abdomen, dorsal view. C. Cephalothorax, ventral view. D. Abdomen, ventral view. E. Ocular region. F. Fovea. G. Sternal sigilla, left view. H. Sternum and labium. I. Maxilla and coxae I–II, left view.J. Left leg I, prolateral view. K. Left leg I, retrolateral view. L. Internal genitalia, dorsal view. Scale bars: A–B, J =2 mm; L=1 mm.

Fig. 65. Aname barrema Raven, 1985, ♀ (QMB S118308). A. Cephalothorax, dorsal view. B. Abdomen, dorsal view. C. Cephalothorax, ventral view. D. Abdomen, ventral view. E. Ocular region. F. Fovea. G. Sternal sigilla, left view. H. Sternum and labium. I. Maxilla and coxae I–II, left view.J. Left leg I, prolateral view. K. Left leg I, retrolateral view. L. Internal genitalia, dorsal view. Scale bars: A–B, J =2 mm; L=1 mm.