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Trachycosmus sculptilis

Fact Box
Trachycosmus sculptilis
(This identification is derived from papers by Norman Platnick and subsequently by Azevedo et al and confirmed by Dr Robert Raven; see notes below)
Body length:
female: 5.5 mm
male: 5.0 mm
This species is widely distributed, spider usually found wandering on open ground or in leaf litter
Uncertain; may be aggressive when defending its egg sac
Trachycosmus sculptilis
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Another view
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Female from front
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Male from front
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Male from above

The transfer of this species from the Trochanteriidae into the Family Trachycosmidae is as stated in the following paper, published in January 2022: Azevedo GHF, Bougie T, Carboni M, Hedin M and Ramirez MJ "Combining genomic, phenotypic and Sanger sequencing data to elucidate the phylogeny of the two-clawed spiders (Dionycha)" Molecular Phylogeny and Evolution 166 1-14.

Although this species belongs to the same family as the flattened Morebilus and Rebilus species it has a much taller profile than they do. The markings on the upper surfaces of its abdomen and the shape of the fovea on its carapace are distinctive features.

Known Range: Not often noticed but recorded as being down the east coast of Australia from Cairns to Tasmania and also in the South-west corner of WA.

Spider(s) with a very similar appearance: Many other dark coloured spiders with an 'average' spider shape.

Email Ron Atkinson for more information.    Last updated 24 March 2022.