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globular spider beetle

Scientific Name
Trigonogenius globulus
Scientific Author
Solier
Taxonomy
(Coleoptera: Anobiidae: Ptininae: Gibbiini)
Status
Exotic Species Occurrence in Australia
Reliability
High
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Diagnostic Notes

Adult body length c. 2.5 mm long; both pronotum and abdomen globular, the abdomen twice as wide as the pronotum; body colour is pale or dark brown, densely clothed above and beneath with pale yellowish-brown scales that are irregularly dispersed with darker brown on the elytra, and with a small, elongate, blackish-brown spot on each side of the suture at the base of the elytra (elytral vestiture, which consists of very dense golden and patches of brown to black recumbent setae and erect golden or brown ones, unequal in length and arranged in longitudinal rows). The pronotum has no scales but has a dense mat of interlacing hairs.

Males have a tuft of erect setae on the middle of the metasternum. Females have no such tuft of setae.

Can be confused with Niptus hololeucus but can be distinguish by: Trigonogenius globulus has a hind femur stout with apical one third expanded, elytra and pronotum covered with gray and brown adpressed hair;  Niptus hololeucus has a hind femur slender with apical one third expanded, elytra and pronotum covered with golden adpressed hair.

Source:

See Canadian Beetle Identification Guide weblink

See Insect and Mite Pests in Stored Foods weblink

More Information
Specimen Contact
Museum Victoria
Author
Walker, K.
Created
18/03/2007 12:09 AEST
Last Updated
30/08/2011 16:44 AEST
Citation
Walker, K. (2007) globular spider beetle (Trigonogenius globulus) Updated on 8/30/2011 4:44:16 PM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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