Eupsenius

LeConte, J.L., 1849

Species Guides

2

Eupsenius is a of ant-loving beetles in the Staphylinidae, Pselaphinae. The genus contains approximately six described distributed primarily in North America. Members of this genus are myrmecophilous, living in association with colonies. The genus was established by John Lawrence LeConte in 1849.

Pronunciation

How to pronounce Eupsenius: /juːpˈsiːni.əs/

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Habitat

nests and surrounding soil environments. in this are myrmecophilous, inhabiting ant colonies where they exploit resources and shelter provided by their .

Distribution

North America. Known from the United States based on descriptions by LeConte and Motschulsky.

Host Associations

Behavior

Myrmecophilous ; inhabits nests. The specific behavioral adaptations facilitating coexistence with ants remain undocumented in published sources.

Similar Taxa

  • Other Pselaphinae generaEupsenius can be distinguished from related pselaphine by tribal placement (Brachyglutini) and specific morphological characters, though detailed diagnostic features require examination

More Details

Taxonomic History

The was erected by LeConte in 1849 with Eupsenius glaber as the type . Additional species were described by Motschulsky (1856), Reitter (1883), and Park (mid-20th century). The genus is classified in the subtribe Eupseniina within tribe Brachyglutini.

Species Diversity

Six described are currently recognized: E. dilatatus, E. glaber, E. metasternalis, E. nevermanni, E. politus, and E. rectus. The is relatively species-poor compared to some other pselaphine genera.

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