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tiny cabinet beetle

Scientific Name
Trogoderma grassmani
Scientific Author
Beal, 1954
Taxonomy
(Coleoptera: Dermestidae: Megatominae)
Status
Exotic species - absent from Australia
Reliability
High
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Diagnostic Images (6)
Diagnostic Notes

Adult body length 2-3mm; elytra with translucent regions forming 3 bands, light coloured patttern extends from base of elytra to half way up the length of the elytra; antennal cavities bare, dull and completely covered with roughened patterns.

Generic separation of various Derrmestid adult and larvae.

Adults

1. Medium ocellus absent - Dermestes
    Medium ocellus present - Go to 2.

2. Body covered with colourful scales - Anthrenus
    Body covered with hairs not scales - Go to 3.

3. First segment of hind tarsi half or less the length    of second segment - Attagenus
   First segment of hind tarsi as long or longer than second segment - Go to 4.

4. No distinct antennal club, all segments gradually enlarging from base to apex - Trogoderma
   Distinct 3 segmented club, these segments considerably larger than remaining segments - Anthrenocerus

Larvae

1.  Ninth abdominal segment with horn-like structures - Dermestes
    Ninth segment without horn-like structures - Go to 2.

2.  Dorsal surface without barbed arrow-shaped setae - Attagenus
    Dorsal surface with barbed arrow-shaped setae - Go to 3.

3.  Tufts of barbed setae do not overlap along the midline - Trogoderma & Anthrenocerus
    Tufts of barbed setae overlap on midline - Anthrenus

Source: See Rees (2004) in references


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