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Dung Beetles
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Diorygopyx tibialis
Distribution
The McPherson Range and southern Queensland to Many Peaks, in montane tall open forest.
Description
Total length 5.0-9.0mm.
Head: Clypeal teeth separated, sometimes with a small median tooth on lower edge. Surface finely punctate.
Prothorax: Pronotal surface finely and densely punctate.
Elytra: Very finely shagreened with minute punctures. Striae distinct, fine. Edges of pseudepipleura sharply folded, distinct.
Hind wings: Basal portion normal, distal portion with reduced membrane.
Sterna: Lateral edges of median lobe of metasternum broadly margined anteriorly, inner edge of margin straight.
Legs: Fore tibiae extremely slender for most of length, suddenly broadened distally to an inwardly directed quadrate lobe. Teeth on inner edge fine, indistinct.
Abdomen: Pygidium with a straight, complete transverse fissure, which is constricted but not closed or appreciably shallower medially.
Sexual dimorphism
Female: Fore tibiae gradually widened to apex, inner edges not serrate, distal outer tooth larger. Prothorax narrowing anteriorly.
References
Matthews, E.G. (1974) A revision of the Scarabaeine dung beetles of Australia. II. Tribe Scarabaeini. Aust. J. Zool. Suppl. Ser. 24: 1-211.
Copyright © Australian Museum 2016
Authors: Rebecca Harris & Dr. Chris Reid