British Insects: the Families of Orthoptera
Adults 11–15 mm long (the females only slightly the longer); pinkish beige (yellowing when dried), with dark markings; fully apterous.
The antennae long, with well over 30 segments. Forewings absent. Hindwings absent (the insects flightless). Foreleg tarsi 4 segmented; mid-leg tarsi 4 segmented; hindleg tarsi 4 segmented. The hind femora smooth. The ovipositor relatively long, with the valves articulated along their length and forming a single structure; 10–12 mm long (slightly up-curved). The males mute. Auditory organs absent.
British representation. 1 species. Tachycines asynamorus (Greenhouse camel-cricket: a Cave cricket). Established alien (living in moist conditions in heated greenhouses, and being carnovorus, potentially useful; but usually eliminated by pesticides). Southern Scotland, northern England, English Midlands, East Anglia, southeast England, central southern England, southwest England, Isle of Wight, and Ireland.
Probably omnivorous but principally carnivorous; in human habitations and in hothouses (mostly the latter).
Classification. Suborder Ensifera; Superfamily Gryllacridoidea; Raphidophoridae.
Comments. Fore- and mid-tibiae with ventral articulated spines; the palps and cerci long, and the legs with particularly long, laterally compressed tarsi.
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 Orthoptera. Version: 12th February 2012. http://delta-intkey.com’.