Euthiconus
Reitter, 1882
Euthiconus is a of minute rove beetles in the Staphylinidae, Scydmaeninae. The genus was established by Reitter in 1882 and contains five described . These beetles are found in Europe and North America, with records from Denmark, Norway, and Sweden confirmed. The group belongs to the tribe Eutheiini within the -like stone subfamily.
Pronunciation
How to pronounce Euthiconus: //juːˈθɪkənəs//
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Identification
Members of Euthiconus can be distinguished from related in Eutheiini by genitalic characters and subtle differences in body proportions. Euthiconus conicicollis has a notably conical pronotum, reflected in its specific epithet. E. latus is broader in body form compared to . E. nopporoensis was described from Hokkaido, Japan, expanding the known range of the genus into East Asia. Detailed identification requires examination of male genitalia and microscopic features.
Distribution
Europe and North America, with confirmed records from Denmark, Norway, and Sweden. Euthiconus nopporoensis has been recorded from Hokkaido, Japan.
Similar Taxa
- EutheiaBoth belong to tribe Eutheiini and share minute body size and -like appearance; Euthiconus generally have more pronounced pronotal modifications
- CephenniumAnother in Scydmaeninae with similar minute rove beetle ; differs in tribal placement and genitalic structure
More Details
Taxonomic History
The Euthiconus was established by Edmund Reitter in 1882. The most recently described , Euthiconus nopporoensis, was named by Jałoszyński in 2019 from material collected in Japan, indicating the genus may be more widespread in the Palearctic than previously recognized.