What Bug Is That? The guide to Australian insect families.

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Languriidae

Overview

The family, as here constituted, includes at least three distinct subgroups, some members of which have been placed in other families: Xenoscelinae, Languriinae and Cryptophilinae. A close relationship exists with Erotylidae and the two families are sometimes merged; the cryptophilines, on the other hand, have been combined with the exotic Toraminae in a separate family, Cryptophilidae (Crowson 1981). Among the Xenoscelinae, the widespread and introduced Leucohimatium arudinaceum has been found feeding on smut spores (Basidiomycetes: Uredinales) and occurs in stored products, Loberus have been found in decaying vegetation, and Xenocryptus tenebroides and some Hapalips have been found feeding on the pollen of cycads. Cryptophilus occur in leaf litter and mouldy vegetation, and C. integer is a minor stored product pest with world-wide distribution.

Description

Moderately to narrowly elongate, subcylindrical to slightly (occasionally strongly) flattened, setose to glabrous, and reddish brown in colour, sometimes with yellow markings or (Languriinae) with black or metallic blue elytra and red prothorax. Head large; eyes coarsely facetted; lateral pronotal margins almost always simple (rarely crenulate or with anterior callosities in Leucohimatium ); tarsi with setose lobes beneath; elytral epipleura well-developed and complete; ventrite 1 not much longer than 2.

Larvae elongate, cylindrical to flattened, sometimes with lateral thoracic and abdominal processes, and moderately lightly sclerotised, sometimes with upper surfaces granulate or tuberculate. Urogomphi straight or curved, simple or complex; mandibular prostheca with broad base; mala falcate; head without median endocarina, except in Leucohimatium .

Distribution

The Australian languriines are placed in the genera Anadastus and Caenolanguria ; nothing is known of their biology, but in some parts of the world languriine larvae are stem-borers. [Aitken 1975; Lawrence 1988a; Sen Gupta 1968a, 1968b; Sen Gupta and Crowson 1971.]

  • Cryptophilus sp.

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