British Insects: the Families of Coleoptera
British Insects: the Families of Coleoptera |
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~Cryptophagidae.
General appearance. 1–1.3 mm long. Body length/maximum body width 2.4–2.6. Elytral length/pronotal length 2.2–2.5. Base of prothorax distinctly narrower than the combined elytral bases. Greatest prothoracic width distinctly narrower than greatest elytral width. Beetles elongate; not necked; conspicuously waisted; dull black. Upper surfaces of body non-glabrous; not bristly; with neither scales nor scale-like setae.
Detailed morphology. Eyes not strongly protuberant; without bristles; coarsely facetted. Antennae short; 11 segmented; clubbed. Antennal insertions visible from above.
Pronotal length/maximum pronotal width 0.95–1.1. Prothorax without notopleural sutures. Metaventrite without a transverse groove. The tarsi without bilobed segments; without ‘hidden’ segments. Mid-leg tarsi 5-segmented; pentamerous. Claws of the mid-leg tarsi not appendaged. Front tarsi with as many segments as the mid-tarsi; 5-segmented. Hind tarsi with as many segments as the mid-tarsi; 5-segmented. Tarsal claws simple. Elytral length/maximum width across the elytra 1.6–1.8. Elytra covering most of the abdomen; exposing no more than part of the terminal tergite; truncate; dull. Scutellary striole absent. Elytra non-glabrous. Wings well developed; fringed with long hairs on the hind margin.
Visible abdominal sternites 5; immovably joined 0. Abdominal segment 8 apparently without functional spiracles.
Habitat, ecology. Land-dwellers; associated with dung.
General comments. Unwin’s citation of tarsi as 4,4,4 is contradicted by Lawrence et al.
Larvae. Larvae in dung.
Classification. Suborder Polyphaga; Superfamily Cucujoidea.
British representation. Genera 1; 1 species.
Illustrations. • Hypocoprus latridioides (from Joy). Hypocoprus latridioides.
To view the illustrations with detailed captions, go to the interactive key. This also offers full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2003 onwards. British insects: the families of Coleoptera. Version: 9th June 2008. http://delta-intkey.com’.
