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Demarziella sylvestris complexThis is a complex of three species, two found in New South Wales (D. scarpensis and D. sylvestris), which are only distinguishable through examination of the male genitalia. No attempt is made to separate the species using the key.
Distribution
Description
Head: Dorsal surface flat, with a few erect bristles. Very densely and coarsely punctate.
Pronotum: Very densely covered with coarse punctures, elongated in depressions. Elevations smooth and shiny. A few coarse bristles.
Pterothorax: Median lobe of metasternum with a low keel, posterior depression shallow or absent, setae absent.
Elytra: Odd-numbered elytral intervals wider than others, with a series of elongated tubercles, except on 1st interval. Tubercles also present on intervals 6 and 8. Each tubercle with one stout bristle on outer edge. Elytral striae parallel, not undulate.
Legs: Inner apical angle of fore tibiae produced into a small rounded process. Outer teeth prominent. Abdomen: Pygidium densely and coarsely punctate, the basal groove not enlarged. The male of D. scarpensis has long slightly curved lobes at the apex of the genital tube, whereas the male of D. sylvestris has short strongly curved lobes.
Sexual dimorphism
References Matthews, E. G. & Stebnicka, Z. (1986) A review of Demarziella Balthasar, with a transfer from Aphodiinae to Scarabaeinae (Coleoptera: Scarabaeidae) Aust. J. Zool. 34: 449-461 |
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