Agathidium oniscoides
Palisot de Beauvois, 1817
round fungus beetle
Agathidium oniscoides is a of round fungus beetle in the Leiodidae, described by Palisot de Beauvois in 1817. The species is found across eastern and central North America, from Canada through the United States. The specific epithet "oniscoides" derives from the Greek "oniskos" () and "-oides" (resembling), indicating a resemblance to woodlice. Like other members of the Agathidium, this species is associated with fungal .

Pronunciation
How to pronounce Agathidium oniscoides: /ˌæɡəˈθɪdiəm ˌɒnɪˈskɔɪdiːz/
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Distribution
Eastern and central North America. Canada: Nova Scotia, Ontario, Quebec. United States: Alabama, Arkansas, Connecticut, Delaware, District of Columbia, Georgia, Iowa, Illinois, Indiana, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Virginia, Vermont, Wisconsin. Records from Mexico appear to be erroneous.
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Etymology
The specific epithet "oniscoides" means "-like" (from Greek oniskos = woodlouse + -oides = resembling), referring to the ' physical resemblance to terrestrial isopods.