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

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 : 131-132

Aname fossoria sp. nov.

urn:lsid:zoobank.org:act:D2C300AB-2A63-426B-8047-D0FFCBE21985

Figs 1 , 12 , 83

Diagnosis

Males of A. fossoria sp. nov. are unknown.

Females of A. fossoria sp. nov. can be distinguished from all species for which females are known except A. fuscochelicera sp. nov., A. nigrochelicera sp. nov., A. nigrotarsa sp. nov., A. rubrochelicera sp. nov., and A. savannensis sp. nov. by the presence of spermathecae with two vesicles, with very short, wide lateral vesicles (lateral vesicle length/genitalia width <0.25) and thinner medial vesicles projecting from the ventral face of the lateral vesicles ( Fig. 83A–L ). Females of A. fossoria can be distinguished from those of A. nigrochelicera , A. rubrochelicera , and A. savannensis by the presence of spermathecae with tightly undulating medial vesicles ( Fig. 83L ; cf. Figs 88 , 91 , 93 ). Females of A. fossoria can be distinguished from those of A. fuscochelicera by the presence of lighter red chelicerae ( Fig. 83A, C ; cf. Fig. 85 ). Females of A. fossoria can be distinguished from those of A. nigrotarsa by the presence of spermathecae with less elongate medial vesicles (medial vesicle length/ width <5) and anterior legs without dark tarsi and distal metatarsi ( Fig. 83J–L ; cf. Fig. 89 ).

Etymology

The specific epithet ‘ fossoria ’ is a Latin adjective meaning ‘digger’ or ‘burrower’, in reference to both the collection locality of the holotype female, at the Richmond Fossil Site, and to the fossorial nature of the spider.

Type material

Holotype

AUSTRALIA – Queensland • ♀; Richmond fossil site; 20°39′ S, 143°06′ E; 199 m a.s.l.; 9 Apr. 2021; E.J. Briggs and V. O. Garcia leg.; excavated, open burrow on ground; QMB S118213 .

Other material examined

AUSTRALIA – Queensland • 1 ♀; Jesmond Road , SW of Charters Towers; 20°10′ S, 146°09′ E; 365 m a.s.l.; 16 May 2023; J.D. Wilson and M.G. Rix leg.; open burrow with little silk and no wishbone; QMB S118351 .

Description

Female (holotype, QMB S118213)

GENERAL ( Fig. 83A–L ). Body length 21.86, in good condition.

DORSAL PROSOMA ( Fig. 83A, E–F ). Carapace length 8.43, width 7.19, length/width 1.17, clypeus to fovea length/carapace length 0.71, caput width/carapace width 0.75, carapace pallid-orange, reflective setae absent or inconspicuous, fovea procurved, fovea width/carapace length 0.15 ( Fig. 83A, F ); chelicerae orange, rastellum absent or inconspicuous, chelicerae length/carapace length 0.45 ( Fig. 83A ); eye group rectangular, width/length 1.92, eye tubercle present ( Fig. 83E ).

ABDOMEN ( Fig. 83B, D ). Abdomen length 9.60, tan-brown, darker dorsally and lighter laterally, dorsal pattern absent, with consistent cover of short setae.

VENTRAL PROSOMA ( Fig. 83C, G–I ). Labium cuspules absent ( Fig. 83H ); maxillae heel distinct, cuspules present, count =about 80, extending posteriorly onto heel, extending laterally about 30% of maxillae length ( Fig. 83C, I ); coxae cuspules absent, thorn-like setae on prolateral face present ( Fig. 83C, I ); sternum length/width 1.26, central sternum with consistent covering of short setae, row of longer setae around posterior edges, setae at higher density around anterior edges ( Fig. 83G–H ); posterior sigilla elongate, central sternum to posterior sigilla length/sternum length 0.26, posterior sigilla length/sternum length 0.15 ( Fig. 83G–H ); other sigilla small, round and lateral ( Fig. 83G–H ).

LEG I ( Fig. 83J–K ). Leg I pallid, reflective setae on dorsal femur, femur length 6.40, patella length 4.11, tibia length 4.64, metatarsus length 4.55, tarsus length 2.53, total length 22.23, leg I length/carapace length 2.64; scopulae on distal metatarsus and tarsus; spine count Fe D 3, Fe PL 1, Pa PL 4 (proximal sweak, medial rubbed off), Ti PL 5, Ti RL 5, Me PL 4, Me RL 5, Ta 0; tibia length/width [TIL/TID] 3.22.

GENITALIA ( Fig. 83D, L ). Epigastric furrow unmodified ( Fig. 83D ); spermathecae with two vesicles each ( Fig. 83L ); lateral vesicle very wide, short and roughly triangular, length 0.21, lateral vesicle length/ genitalia width 0.12, length/width at base 0.34, crown distinct and narrow ( Fig. 83L ); medial vesicle short, undulating, and projecting postero-ventrally, medial vesicle length/genitalia width 0.25, length/ width 4.93, medial vesicle length/lateral vesicle length 2.14 ( Fig. 83L ).

Distribution and natural history

Aname fossoria sp. nov. occurs in central-northern Queensland, near the border of the Mitchell Grass Downs and Gulf Plains bioregions, and further east in the Desert Uplands bioregion. It is known from two locations: the type location near the Richmond Fossil Site, and much further east, just west of Charters Towers, where a female has been tentatively linked to this species ( Fig. 12 ). The form of burrows constructed by spiders of this species is unknown, but is likely to be similar to that of other rubrochelicera -complex species ( Fig. 12 ).

Figures

Fig. 1. Phylogeny and general map of eastern Australian Aname L. Koch, 1873. Left: IQ-TREE Maximum Likelihood phylogeny for the genus Aname with species groups sensu Rix et al. (2021) highlighted in grey, species complexes as defined in this study highlighted in colour, and showing the phylogenetic position of many of the species described herein, as well as some potential species (those with nicknames in quotation marks) that may turn out to be distinct, but did not meet our standards for description. Species groups that are not represented in eastern Australia are collapsed. Support values on the phylogeny show the results of 1000 ultrafast bootstrap replicates, and are only shown in cases where support was below 90%. Top-right: a map of subtropical and tropical eastern Australia, showing the locality of all Aname specimens included in this study. Bottom-right: a smaller phylogeny highlighting the higher-level relationships between species groups of Aname as recovered in this study.

Fig. 12. Aname rubrochelicera-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. 83. Aname fossoria sp. nov., holotype, ♀ (QMB S118213). 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. 88. Aname nigrochelicera sp. nov., ♀ (QMB S118300). 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. 91. Aname rubrochelicera sp. nov., ♀ (QMB S118285). 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.93.Anamesavannensissp.nov.,♀(QMBS118211).A.Cephalothorax,dorsalview.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. Right leg I, prolateral view (image reflected). K. Right leg I, retrolateral view (image reflected). L. Internal genitalia, dorsal view. Scale bars: A–B, J= 2 mm; L= 1 mm.

Fig. 85. Aname fuscochelicera sp. nov., paratype, ♀ (QMB S118235). 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. 89. Aname nigrotarsa sp. nov., holotype, ♀ (QMB S118311). 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.