Synonyms
Trichorcus Blackburn, 1892: 73. TS: Trichorcus cinctus Blackburn, 1892a: 73.
Diagnosis
The single included species is instantly recognized from all known Chilocorini by its hirsute hemispherical form and brown-grey coloration.
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Description
Length 3.9-4.0 mm. Body broadly oval, moderately convex; dorsum densely hairy.Head transverse; eye not emarginate. Antenna 10-segmented, short; scape asymmetrical; terminal antennomere longer than penultimate one. Clypeus short, weakly emarginate medially and extending laterally below eyes; labrum partially exposed. Maxillary palp moderately long, last palpomere securiform. Pronotal base bordered medially, the bordering line continues uninterrupted and is separate from fine marginal line; prosternum moderately long in front of procoxae; prosternal process narrow, without carinae; hypomeral fovea near anterior angles of prosternum absent. All tibiae simple externally; meso- and metatibiae with apical spurs; claw strongly appendiculate. Elytral margin weakly reflexed without clear bead; epipleuron descending without foveae. Abdomen with 6th ventrite visible in male; postcoxal lines separated at middle, each running parallel to posterior margin and abruptly recurving apically. Male terminalia. Parameres and phallobase symmetrical; penis guide symmetrical. Parameres articulated with phallobase. Penis stout, consisting of single sclerite; basal capsule distinct and T-shaped. Apodeme of male sternum 9 very narrow and rod-like. Female unknown.
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Distribution and Biology
Monotypic genus known only from New South Wales. Biology unknown.
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Genus References
Blackburn, T. 1892. Further notes on Australian Coleoptera, with descriptions of new genera and species. XI. Transactions of the Royal Society of South Australia, 15(1): 20-73.
Slipinski, A, and J. A Giorgi. 2006. Revision of the Australian Coccinellidae (Coccinellidae). Part 6. Tribe Chilocorini. Annales Zoologici (Warszawa), 56, (2): 265-304.
Slipinski, S.A. 2007. Australian Ladybird Beetles (Coleoptera: Coccinellidae) their biology and classification. ABRS, Canberra. 286 pp.
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