Gymnusa grandiceps
Casey, 1915
Gymnusa grandiceps is a rove beetle in the Staphylinidae, first described by Casey in 1915. It is distributed across northern North America, with records from Canada and the northeastern United States. The belongs to the tribe Gymnusini within the Aleocharinae.

Pronunciation
How to pronounce Gymnusa grandiceps: //dʒɪmˈnjuː.sə ˈɡræn.dɪˌsɛps//
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Distribution
Canada (British Columbia, Labrador, Manitoba, New Brunswick, Newfoundland, Nova Scotia, Ontario, Quebec) and United States (Connecticut, Illinois, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New York, Rhode Island, Vermont).
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Etymology
The specific epithet 'grandiceps' likely refers to the relatively large characteristic of this , a trait distinguishing it from .