Arbanitis gracilis

Arbanitis gracilis, also known as the silver-haired trapdoor spider, is a species of mygalomorph spider in the Idiopidae family. It is endemic to Australia. It was described in 1918 by Australian arachnologists William Joseph Rainbow and Robert Henry Pulleine.[1][2]

Arbanitis gracilis
Female
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Mygalomorphae
Family: Idiopidae
Genus: Arbanitis
Species:
A. gracilis
Binomial name
Arbanitis gracilis
Synonyms
  • Misgolas gracilis (Rainbow & Pulleine, 1918)

Distribution and habitat

The species occurs in eastern New South Wales, including the Sydney Basin, westwards to the Blue Mountains in open forest habitats, mainly on Hawkesbury Sandstone substrates. The type locality is the Domain in the city of Sydney.[1][2]

Burrow with trapdoor open
Burrow with trapdoor closed

Behaviour

The spiders are fossorial, terrestrial predators. The burrow is constructed in friable soil with a thin trapdoor.[2]

References
  1. Rainbow, WJ; Pulleine, RH (1918). "Australian trap-door spiders". Records of the Australian Museum. 12: 81–169 [110]. doi:10.3853/j.0067-1975.12.1918.882.
  2. "Species Arbanitis gracilis (Rainbow & Pulleine, 1918)". Australian Faunal Directory. Dept of Climate Change, Energy, the Environment and Water, Australia. 2023-02-03. Retrieved 2023-07-22.


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