The Find-a-Spider Guide

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Tree trapdoor spider

Fact Box
Species:
Migas species (ID: See below)
Family:
Migidae
Body length:
female: 8 mm
male: 5 mm
Habitat:
In a small burrow in tree ferns
Toxicity:
Unknown; handle cautiously
Migidae

The identity of the spider shown on this page, which was actually found on an island associated with Tasmania, is based on a matching image presented by John Douglas on his Tasmanian Spiders website. On this basis the spider above is Migas plomleyi, but there is some uncertainty as to whether the Australian migids are in need of revision. The World Spider Catalog in January 2017 indicates that there are many migid species in New Zealand but only five Australian species, two of which are Heteromigas rather than Migas species, and these are known to be present only in Quensland and Tasmania. The reason why there is such a large gap between these two populations is not clear, given that there is at least one Migas and one Heteromigas species listed for both Queensland and Tasmania.

The most important characteristics of this species are the reasonably glossy black colour, the shortened spinnerets and the burrow this species builds. The downwards-pointing spines on the legs may also be significant.

Spider(s) with a very similar appearance: Some members of the Heteropodidae, Nemesiidae and Idiopidae.


Email Ron Atkinson for more information.    Last updated 24 January 2017.