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Genus AmphistomusSpecies found in eastern NSW: A. macphersonensis, A. speculifer, A. primonactus, A. trispiculatus.
Other species: A. squalidus, A. inermis, A. pygmaeus, A. complanatus, A. tuberculatus, A. calcaratus, A. accidatus, A. palpebratus, A. pectoralis, A. montanus, A. opacus, A. storeyi, A. cunninghamensis (Qld)
Distribution
Description Six clypeal teeth, of which the middle two are a little longer; anterior part of underside of pronotum with a deep excavation bounded by a strong keel. Elytra: elytra with 10 striae, 7 on disc, 3 on pseudepipleura. Striae very shallow, intervals not convex. Tubercles present on odd-numbered intervals only. Lateral edges of elytra with series of teeth, tubercles or undulations. Hind wings: Either fully developed, reduced or absent. Legs: Outer edge of fore tibiae with 3 large teeth. Middle coxae short, parallel and widely separated. Middle tibiae with 2 transverse keels on outer face. Spurs extremely short. Claws very small, simple. Abdomen: Sternites foreshortened, crowded together in middle. Pygidium flat, to moderately convex, finely bordered, with a maximum of 7 tubercles on disc.
Sexual dimorphism
Similar Genera
Demarziella, with rugose, uneven elytra covered with bristles and setae.
Ecology
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. |
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