British Insects: the Genera of Orthoptera
British Insects: the Genera of Orthoptera |
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Gryllulus Uvarov.
Adults crepuscular and nocturnal; 14–20 mm long; greyish brown (more yellowish when dried), with darker brown markings on the head and pronotum.
The antennae long, with well over 30 segments. Forewings well developed; greatly exceeding the abdomen when folded to about equalling the abdomen. Hindwings fully developed (extending beyond the body). Forelegs conventional (i.e., not modified for digging). Foreleg tarsi 3 segmented; mid-leg tarsi 3 segmented; hindleg tarsi 3 segmented. The hind femora smooth. The ovipositor relatively long, with the valves articulated along their length and forming a single structure; 8–13 mm long (very slender, extending beyond the tips of the folded hindwings). The males stridulous. The sound production alary. Auditory organs located in the fore-tibiae.
British representation. 1 species. Acheta domesticus (House cricket). Established alien. Northern Scotland, southern Scotland, northern England, English Midlands, East Anglia, Wales, southeast England, central southern England, southwest England, Isle of Wight, Ireland, and Channel Islands (but all records from Ireland and most from northern England are earlier than 1961).
Widely omnivorous; found outdoors in natural habitats, encountered in and around docks and warehouses, in human habitations, and in hothouses (mainly in warm places associated with human activities).
Classification. Suborder Ensifera; Superfamily Grylloidea; Gryllidae.
Illustrations. • A. domestica (House cricket: Lucas).
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 genera of Orthoptera. Version: 18th September 2008. http://delta-intkey.com’.
