British Insects: the Families of Coleoptera
British Insects: the Families of Coleoptera |
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Family name listed by neither Kloet and Hincks nor Unwin.
General appearance. Body length/maximum body width 1.43–1.56. Elytral length/pronotal length 4–4.8. Base of prothorax not or scarcely narrower than the combined elytral bases. Greatest prothoracic width not narrower or only slightly narrower than the greatest elytral width, or distinctly narrower than greatest elytral width. Beetles oval; dorsally strongly convex; not necked; not waisted; decidedly short-legged (retracting firmly into cavities in the ventral body surface, cf. Byrrhidae). Upper surfaces of body glabrous or subglabrous, or non-glabrous; not bristly; exhibiting scales or scale-like setae, or with neither scales nor scale-like setae.
Detailed morphology. Beetles not prognathous. Eyes not strongly protuberant; without bristles; finely facetted. Antennae very short to short; 11 segmented; clubbed (and with segment 3 unusually elongate). Antennal clubs 3 segmented (tomentose); preceded by a cupule. Antennal insertions hidden from above. Mandibular prosthecae well developed.
Prothorax shorter than wide. Pronotal length/maximum pronotal width 0.31–0.35. Prothorax at its widest markedly narrower than the adjoining part of the abdomen, or not markedly narrower than the adjoining part of the abdomen. Prothorax without notopleural sutures. Metaventrite without a transverse groove. Hind coxae moveable. 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 1.14–1.28. Elytra exposing no more than part of the terminal tergite; hard; glossy. Scutellary striole absent. Wings well developed.
Visible abdominal sternites 5; immovably joined 0. Abdominal segment 8 with apparently functional spiracles.
Habitat, ecology. Land-dwellers; under bark.
Larvae. Larvae in or under bark.
Classification. Suborder Polyphaga.
British representation. Genera 1 (?); 1 species (?). E.g., the mainland-European Nosodendron fasciculare (Tufted Nosodendron), the probably adventive mainland-European species illustrated by Curtis.
Illustrations. • Nosodendron fasciculare (Tufted Nosodendron: B. Ent. 246. Probably adventive). • Nosodendron fasciculare (details, B. Ent. 246). • Nosodendron fasciculare: B. Ent. 246, legend+text.
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’.
