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Beetles

lesser auger beetle
Heterobostrychus aequalis (Waterhouse, 1884) (Coleoptera: Bostrichidae: Bostrichinae: Bostrichini)

Status
Exotic (absent from Australia) High Impact Pest Species

Dorsal view Zoomify

Caption: Specimen Locality Label: Malaysia. 1951QA.

Source: Ken Walker Museum Victoria

Description: Body length 6-13mm; Apical declivity of elytra bituberculate on each side; pronotum longer than wide; head without a hairy tubercle on clypeal suturel posterolateral angles of pronotum lobed; teeth on anterior border of pronotum broadly separated; apical declivity of elytra arcuately deflexed, male with inner two stout tubercles pointing obliquely upwards.

Females differ from males as: pronotum smaller, teeth on anterior apicval border of pronotum shorter; apical declivity of elytra without marginal tunercles.

Differentiation of males as follows:

1. Apical declivity of elytra unituberculate on each side ......... H. hammatipennis
- Apical declivity of elytra bituberculate on each side .. 2

2. Posterolateral angles of pronotum lobed; teeth on anterior border of pronotum broadly separated; apical declivity of elytra arcuately deflexed with inner two stout tubercles pointing obliquely upwards ... H. aequalis
- Posterolateral angles of pronotum rounded; teeth on anterior border of pronotum narrowly separated; apical declivity of elytra obliquely deflexed with inner two stout tubercles pointing inwards ... H. pileatus

PaDIL Links:
Auger beetle (Heterobostrychus brunneus)
Chinese auger beetle (Heterobostrychus hamatipennis)
auger beetle (Heterobostrychus pileatus)

Specimen contact point: AQIS - Brisbane

Citation: Walker, K. (2008) lesser auger beetle (Heterobostrychus aequalis) Pest and Diseases Image Library. Updated on 7/19/2008 8:59:35 PM. Available online: http://www.padil.gov.au

Created Date: 5/30/2005 5:19:26 PM

Last Updated: 7/19/2008 8:59:35 PM

Diagnostic Images
Elytra	Head Front	Head Side	Pronotum
Thorax Side
Overview Images
Dorsal	Lateral	Posterior
Other Images
Larva head	Larva side view