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Cretomerobius
''Cretomerobius'' is an extinct genus of lacewing in the neuropteran family Hemerobiidae known from fossils found in North America and Asia. The genus currently contains two species, the Aptian ''C. disjunctus'' and the Ypresian ''C. wehri''.
==History and classification==
''Cretomerobius disjunctus'' is known from the holotype specimen found in the Aptian age Bon–Tsagan site, one of the richest insect fossil locations in Mongolia. Bon Tsagan preserves lacustrian sediments of a mountain lake. The genus and type species were first described by Alexandr G. Ponomarenko in a 1992 paper on the fossil Neuroptera faunas of Mongolia, who named the species ''C. "distinctus"'', and which was later amended to ''C. disjunctus'' as a ''lapsus calami''.〔
Similarly, ''C. wehri'' was described from a single mostly complete forewing which was preserved as a compression-impression fossil preserved in shale. The fossil was recovered from outcrops of the Ypresian Klondike Mountain Formation in the Republic, Washington area by Wesley Wehr in 1993.〔 The type specimen is currently preserved in the Department of Paleobiology collections housed at Burke Museum of Natural History and Culture, located in Seattle, Washington, USA. ''W. wehri'' was first studied by Vladimir Makarkin of the Far Eastern Branch of the Russian Academy of Sciences, S. Bruce Archibald from Simon Fraser University and John D Oswald of Texas A&M University. Their 2003 type description of the new species was published in the journal ''The Canadian Entomologist''. Makarkin ''et al'' coined the specific epithet ''wehri'' in honor of Wesley Wehr for his work on the paleontology of the Republic site.〔
At the time of the species description, placement of ''Cretomerobius'' within Hemerobiidae was uncertain. The overall venation of the wings did exclude the genus from a majority of the currently defined subfamilies; specifically Adelphohemerobiinae, Berothimerobiinae, Carobiinae, Notiobiellinae, Sympherobiinae, Psychobiellinae, Hemerobiinae, and Microminae. Makarkin ''et al'' suggested the possibility that ''Cretomerobius'' is an early offshoot genus. It would be near the start of the subfamily group consisting of Drepanacrinae, Megalominae, and Drepanepteryginae; but until more specimens are found and described, the placement could not be resolved.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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