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

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Corylophidae LeConte, 1852

Overview

Sericoderus and Orthoperus occur commonly in grass cuttings and mouldy hay, and Corylophodes and Rypobiini have been taken in leaf litter samples. Some Saciinae and Sericoderinae have been collected feeding on surface spore fields produced by certain Ascomycetes. Corylophids have also been collected under bark, in rotten wood and on the pore surfaces of bracket fungi. As in Coccinellidae, the pupa is obtect and partly enclosed within the larval skin.

Description

Minute, oblong to broadly ovate and strongly convex to somewhat flattened beetles (rarely more elongate and flattened), with small head usually concealed beneath prothorax and relatively long antennae with large club. Orthoperus , Corylophodini and Rypobiini (Corylophinae) are glabrous, while Priamima , Sericoderinae and Saciinae are almost always pubescent. The elytra are truncate, exposing the abdominal apex, in Orthoperini, Saciinae and Sericoderinae, and in the last group the hind angles of the pronotum extend posteriorly to embrace the elytral humeri. In Rypobiini, the labrum is acute and the mandibles and maxillae are stylet-like (Pakaluk 1987).

Larvae oblong to broadly ovate, more or less flattened and clothed with variously modified setae, with paired glandular openings on abdominal segments 1 to 7 or 1 and 8. Antennae moderately to very long; head transverse to somewhat elongate; mouth-parts sometimes stylet-like and endognathous; tarsungular seta usually clavate.

Distribution

There are 3 subfamilies in Australia: Sericoderinae ( Anisomeristes , Sericoderus ), Saciinae and Corylophinae ( Orthoperus , Priamima , Corylophini, Corylophodini, Rypobiini). [Pakaluk and Lawrence 1986; Paulian 1950, 1962.]

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