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Gryllus Scudderianus
''Gryllus'' is a genus of field cricket (Orthoptera, Gryllidae, Gryllinae). Members of the genus are typically 15–31 mm long and darkly coloured. The type species is ''Gryllus campestris'' L.: the European field cricket. Until the mid-1950s, native field crickets in eastern North America were all assigned to a single species, ''Acheta assimilis'' Fabricius. Although regional variation in calling song and life history were noted,Rehn, J.A.G., and Hebard, M. (1915). The genus ''Gryllus'' (Orthoptera) as found in America. ''Proc. Acad. Nat. Sci. Phila.'' 67:292-322.Fulton, B. B. 1952. Speciation in the field cricket. Evolution 6, 283-295. no morphological characters could be found to reliably distinguish these variants.Alexander, R.D. (1957). The taxonomy of the field crickets of the eastern United States (Orthoptera: Gryllidae: Acheta). ''Ann. Entomol. Soc. Am.'' 50:584-602. Building upon the pioneering work of Fulton, Alexander used male calling song, life history and cro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gryllus Campestris
''Gryllus campestris'', the European field cricket or simply the field cricket in the British Isles, is the type species of crickets in its genus and tribe Gryllini. These flightless dark colored insects are comparatively large; the males range from 19 to 23 mm and the females from 17 to 22 mm. Habitat ''Gryllus campestris'' used to be common over most of Western Europe. It prefers dry, sunny locations with short vegetation, like dry grasslands. At the northern edge of its range, it is restricted to heathlands and oligotrophic grasslands. The species is flightless and unable to migrate long distances, and it therefore does not commonly recover on its own from local extinction. Reproduction The reproductive season of the univoltine species lasts from May to July. The males make a burrow with a platform at the entrance from which they attract females with their courtship stridulation. They chirp during daytime as well as the first part of the night, only when the te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
