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Odomasta species?

Fact Box
Species:
Odomasta species?
(This identification is as advised by Dr R. Raven but as the notes below indicate the correct generic name may be either Odo or Odomasta)
Family:
Miturgidae
Body length:
female: about 8 mm
male: about 7 mm
Habitat:
This species lives in leaf litter or under rocks in drier parts of inland Australia
Toxicity:
Unknown so this spider should be handled with caution
Odomasta species?
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View from above
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Another view
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Another specimen?
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Another view

While there is no question that the spider(s) shown on this page is a member of the Family Miturgidae the appropriate generic name for it is uncertain. It is shown here as a possible Odo species but in August 2018 the World Spider Catalog lists only one Australian Odomasta species, Odomasta guttipes, and no good photos of it are available. On the other hand, it is entirely possible that there are a number of undescribed Australian Odo or Odomasta species since there are on the internet photos labelled as Odo species and supplied by Mark Newton and Allan Lance, these containing spiders that have a quite similar appearance to the ones presented above.

The eye arrangement, body shape, leg lengths and spinneret appearance are much the same and even the erect spines on the dorsal side of the femur (first major leg segment) of each leg closely resemble those on the Newton and Lance spiders. There are some obvious differences in colour and surface patterns but a consistent feature, at least on females, seems to be a white band at the distal end of the patella (knee segment) of Legs III and IV. It is therefore concluded that the spider(s) shown on this page as well as those photographed by Mark Newton and Allan Lance should be considered to be Odomasta species, at least until a revision of the Miturgidae leads to a generic name change.

Spider(s) with a very similar appearance: Some members of the Families Lycosidae and Gnaphosidae.


Email Ron Atkinson for more information.    Last updated 13 August 2018.