Arkys walckenaeri

triangular spider
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Arachnida
Order:	Araneae
Infraorder:	Araneomorphae
Family:	Arkyidae
Genus:	Arkys
Species:	A. walckenaeri
Binomial name
Arkys walckenaeri Simon, 1879
Synonyms[1][2][3]
Arkys clavatus Keyserling, 1890 Arkys nitidiceps Simon, 1908

Arkys walckenaeri, Walckenaer's studded arkys, is a common Australian spider belonging to the family Arkyidae. A small ambush hunter with long curved forelegs and a narrow, triangular shaped abdomen, it is named in honour of Charles Athanase Walckenaer.^[4][5] It also occurs on Java.^[2]

Description

Arkys walckenaeri's triangular abdomen shows regional variability in colour and pattern. Specimens from Queensland and Java have white sigilla on an orange to red abdomen. West Australian, South Australian and Tasmanian specimens, on the other hand, are pale yellow with few to no visible markings. Both sexes reach a length of approximately 7 mm.^[2]

References

1. "Arkys walckenaeri". World Spider Catalog. Natural History Museum Bern. Retrieved 4 January 2024.
2. Heimer, Stefan (May 1984). "Remarks on the Spider Genus Arcys WALCKENAER, 1837, with Description of New Species (Araneae, Mimetidae)" (PDF). Entomologische Abhandlungen Dresden. 47 (9). Staatliches Museum für Tierkunde Dresden: 175. Retrieved 4 January 2024.
3. Framenau, Volker W.; Scharff, Nikolaj; Harvey, Mark S. (2010). "Systematics of the Australian orb-weaving spider genus Demadiana with comments on the generic classification of the Arkyinae (Araneae : Araneidae)" (PDF). Invertebrate Systematics. 24. CSIRO Publishing: 158, 167–169. Retrieved 4 January 2024.
4. "Triangular spider". The Find-a-Spider Guide for the Spiders of Southern Queensland. Retrieved 2021-10-30.
5. "Arkys walckenaeri Walckenaer's Studded Arkys". Arachne.org.au. Retrieved 2021-10-30.