Goniusa caseyi
Gusarov, 2003
Goniusa caseyi is a of rove beetle in the Staphylinidae, first described by Gusarov in 2003. It belongs to the Aleocharinae, one of the largest and most diverse groups within the rove beetles. The species has been documented in both Canada and the United States, with records spanning from the northeastern U.S. to western Canada and Texas. As with many aleocharine rove beetles, specific ecological details remain poorly known due to their small size and cryptic habits.
Pronunciation
How to pronounce Goniusa caseyi: //ɡoʊˈnaɪ.uːsə ˈkeɪsi.aɪ//
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Identification
Goniusa caseyi can be distinguished from other Goniusa by its specific combination of morphological characters as defined in Gusarov's 2003 description. As a member of the Athetini tribe within Aleocharinae, it likely exhibits the typical athetine features including relatively small body size, compact body form, and specific arrangements of setae and sensory structures on the pronotum and . Definitive identification requires examination of male genitalia and other fine structural details visible only under magnification.
Distribution
Documented from Canada (Alberta, British Columbia, Manitoba) and the United States (District of Columbia, Massachusetts, New Hampshire, New Jersey, New York, Texas). The shows a notably broad North American distribution spanning northeastern, mid-Atlantic, and southwestern regions of the United States, plus western and central Canadian provinces.
More Details
Taxonomic history
The was established by Vladimir Gusarov in 2003 as part of his revisionary work on the Goniusa. The specific epithet 'caseyi' honors an individual, likely a colleague or mentor in the field of staphylinid .
Collection records
Based on GBIF data, the has been recorded from multiple localities across North America, though individual observation counts remain low (2 observations documented on iNaturalist as of source date), suggesting it is either genuinely uncommon or undercollected due to its small size and cryptic habits typical of many aleocharine rove beetles.