Insects of Britain and Ireland: the families of Hemiptera

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L. Watson and M. J. Dallwitz

Stenocephalidae

Spurge Bugs.

Salient features of adults. Terrestrial; littoral (sometimes), or not littoral.

Phytophagous (on Euphorbia species). Small to large; 8–14 mm long; fliers; emitting repugnatorial liquid as a defence reaction (? - cf. Pentatomidae); relatively stout bodied; not stilt-legged; with conspicuous dark-and-pale banding on the antennae and legs. Head non-linear. Rostrum clearly separated ventrally from the prosternum by a sclerotized gula; 4 segmented. Antennae from the upper part of the head; longer than the head, readily visible from above; 4 segmented; non-aristate. Ocelli present. Scutellum relatively small. Fore-wings well developed; differentiated into a basally thickened and a distally membranous region; with a clavus. Membrane of the hemelytron with numerous veins reaching or almost reaching the margin. Tarsi 3 segmented. The abdomen without ventral silvery pubescence. The second dorsal abdominal scent gland aperture not displaced into the fifth tergite, and distant from the first gland.

Dark brown bugs, with black and yellow banded antennae, front of the head bilobed.

Taxonomy. Suborder Heteroptera; Pentatomoidea.

British representation. 2 species in Britain; genera 1. Dicranocephalus.

Illustrations. • Dicranocephalus agilis (Southwood & Leston). • Stenocephalus agilis, with Coreidae, Rhopalidae, etc.: 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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