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Diochus electrus : ウィキペディア英語版 | Diochus electrus
''Diochus electrus'' is an extinct species of rove beetle in genus ''Diochus'', the only definitive fossil species in subfamily Staphylininae. The species is known only from the middle Eocene, Lutetian stage Baltic amber found in the Blaue Erde deposits, Baltic region, Northern Europe. ==History and classification== ''Diochus electrus'' is known only from one fossil, the holotype, number "KU-NHM-ENT, B-244". It is a single complete adult female preserved as an inclusion in a specimen of clear orange amber. The fossil was recovered from an outcrop of the Blaue Erde deposits which contain the fossil resins in the Baltic region.〔 The type specimen is currently preserved in the Division of Entomology at the University of Kansas Natural History Museum located in Lawrence, Kansas, USA. ''Diochus electrus'' was first studied by Stylianos Chatzimanolis of the University of Tennessee at Chattanooga and Michael S. Engel of the University of Kansas. Their 2011 type description for the new species was published online and in print in the journal ''ZooKeys''. The etymology of the specific name ''electrus'' is a derivation of the Latin word "''electrum''" meaning amber.〔 When ''Diochus electrus'' was described, it was the first definitive species of the rove beetle subfamily Staphylininae to be described from the fossil record.〔 The Baltic amber species ''Bembicidiodes inaequicollis'', described by L. W. Schaufuss in 1888, was formerly considered part of Staphylininae. However reevaluation of the species in 2001 by L.H. Herman raised doubts about the correct subfamily placement for ''B. inaequicollis''. ''Diochus electrus'' is one of eleven species of the genus ''Diochus'' inhabiting the Palearctic ecozone.〔
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