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Xeris Umbra
''Xeris'' is a genus of horntails found in North America and Eurasia. Achille Costa circumscribed the genus in 1894. Synonyms In 1987, Malkiat S. Saini and Devinder Singh circumscription (taxonomy), circumscribed a new genus, ''Neoxeris'' upon their description of a new species, which they called ''Neoxeris melanocephala''. In 2012, ''N. melanocephala'' was transferred to ''Xeris'', making ''Neoxeris'' a junior synonym. ''X. melanocephalus'' was later synonymized with ''X. himalayensis''. Description Characteristic features of ''Xeris'' compared to other genera of Siricidae genera include: a hind wing with which lacks a Glossary of entomology terms, cell cup, a small vertical ridge behind the eye, and a metatibial spur. Distribution ''Xeris'' species are found in North America and Eurasia. In North America, they're found from the boreal forests in Alaska and Canada south through Chiapas in southern Mexico. They are found in temperate and boreal regions of Eurasia as well as mount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xeris Spectrum
''Xeris spectrum'' is a kind of horntail or wood wasp, that lives in coniferous forests. It is large wasp with a powerful ovipositor in females. Unlike other Siricid Wood wasps, ''Xeris spectrum ''does not have symbiotic fungi to aid its larvae as they burrow in the wood of fir and other conifer trees making it unique in the Siricidae. It is widespread and is found in large parts of Europe, Asia, Africa and North America. Appearance The body of ''Xeris spectrum'' is cylindrical. The head is broadest behind the eyes, and antennae are thread-shaped. Both sexes are equal in length, between . The body is black or dark brown and shiny with white spots behind the eyes and on the sides of the prothorax. ''Xeris spectrums legs are orange-red. Males have brown rings around the leg. The body of the larvae is cylindrical and slightly flattened and is up to long. The pupa is in length. The antennae of the pupa extend beyond the wings at the level of the eighth segment. Behavior ''Xeri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
