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Scarab Beetle

Scientific Name
Adoretus sp.
Scientific Author
(Coleoptera: Scarabaeidae: Rutelinae: Adoretini)
Pest Status
0 Unknown
NZ - Exotic

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Diagnostic Images

Lateral - Adult
Caroline Harding MAF
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Diagnostic Images (6)
Diagnostic Notes

Variable in form, but generally elongate and rather depressed. Clothed above and beneath with short hairs, setae or scales. Labrium strongly produced, its surface denticulate, its apex overhanging that of labium. Mandibles short and stout, separated by the rostrum, each having a large basal molar and a broad rounded external ramus. Maxilla short and stout, with a strongly chitinised lobe provided with about 4 very strong short teeth set obliquely; the palpi rather long. Mentum short and broad, deeply emarginate at the middle of the anterior edge and deeply constricted at the sides for the insertion of the palpi. Antennae normally 10-segmented, in a few species 9-segmented. Pronotum short and scutellum small. Elytra closely, not serially punctured, with more or less visible narrow sutural, lateral and 3 discoidal costae; apical angles generally rounded off. Pygidium generally clothed with erect hairs. Sides of the abdomen generally evenly rounded. Front tibia bears 3 external teeth and is sometimes finely serrated above them. Hind tibia not much dilated at the end. Tarsi generally moderately slender, but hind ones may be short and compact. Claws very unequal, the inner front and outer middle and hind ones very long, and the first and second cleft at the tip.

Larvae - Family diagnosis

Number of antennal segments 4, or 5 or more. Frontoclypeal suture distinct. Mandibles asymmetrical. Mandibular mola present; mola with brush or hairs or spines at base. Cardo distinct and sclerotized; divided by internal ridge; strongly oblique or longitudinal. Number of segments in maxillary palp four. Number of segments in labial palp two.


- Arrow, G.J. (1917). The fauna of British India, including Ceylon and Burma. Coleoptera: Lamellicornia, part 2. (Rutelinae, Desmonychinae, and Euchirinae). Taylor and Francis, London, 387 pp.

- Lawrence, J.F., Hastings, A.M., Dallwitz, M.J., Paine, T.A. & Zurcher, E.J. (1999). Beetle larvae of the world. CSIRO Publishing, Melbourne, CD-ROM.
More Information
Specimen Contact
MAF Plant Health & Environment Laboratory
MAF Plant Health & Environment Laboratory
01/02/2011 06:43 AEST
Last Updated
07/05/2014 02:03 AEST
MAF Plant Health & Environment Laboratory (2011) Scarab Beetle (Adoretus sp.) Updated on 5/7/2014 2:03:27 AM Available online: PaDIL -
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Free for use under the Creative Commons Attribution 3.0 Australia License