Insects of Britain and Ireland: the families of Hemiptera

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L. Watson and M. J. Dallwitz

Naucocoridae

Naucoridae.

Ship Bugs, Saucer Bugs.

Salient features of adults. Foraging under water (in still waters).

Predacious (on crustaceans and insects). Large; about 15 mm long; fliers; swimming and moving under water the right way up; relatively stout bodied (widest across the middle of the abdomen). Head non-linear (wider than long). Rostrum clearly separated ventrally from the prosternum by a sclerotized gula; 3 segmented. Antennae inserted underneath the head and much shorter than it, generally invisible from above. Ocelli absent. Scutellum relatively small. Fore-wings well developed; in the resting insect lying more or less flat over the abdomen; differentiated into a basally thickened and a distally membranous region; with a clavus. Fore-legs modified and raptorial. Hind coxae mobile; hinged. The abdomen without a respiratory siphon.

Without a respiratory siphon; middle and hind legs hair-fringed for swimming; rostrum very short.

Taxonomy. Suborder Heteroptera; Notonectoidea.

British representation. 1 species in Britain (I. cimicoides); genera 1. Ilyocoris.

Illustrations. • Ilyocoris cimicoides (Southwood & Leston). • Ilyocoris and other aquatic bugs (Southwood & Leston). • Ilyocoris cimicoides, with Miridae, Aphelocheirus and Nepa: Saunders, 1892..


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. Insects of Britain and Ireland: the families of Hemiptera. Version: 16th May 2016. delta-intkey.com’.

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