Acrossus
Mulsant, 1842
Species Guides
2- Acrossus rubripennis
- Acrossus rufipes(Night-flying Dung Beetle)
Acrossus is a of scarab beetles in the Scarabaeidae, Aphodiinae. The genus contains more than 40 described , making it one of the more species-rich genera within the Aphodiini tribe. Species are predominantly found in the Palearctic and Oriental regions, with limited representation in North America and the Afrotropical region. The genus was established by Mulsant in 1842 and has been subject to ongoing taxonomic revision.
Pronunciation
How to pronounce Acrossus: //əˈkɹɒsəs//
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Identification
of Acrossus are medium-sized to large aphodiine scarab beetles. A key diagnostic feature is the , which is anteriorly rounded or . Accurate species-level identification requires examination of detailed morphological characters and male genitalia; the has been subject to taxonomic revision using both morphological and molecular (mitochondrial COI) data.
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Distribution
The is distributed mainly in the Palearctic and Oriental regions. One occurs in North America, and one species is present in the Afrotropical region. The type locality for Acrossus baei sp. nov. is South Korea.
Similar Taxa
- Other Aphodiini generaAcrossus can be distinguished from related aphodiine by its characteristic clypeal shape (anteriorly rounded or ) and overall larger body size in many , though precise boundaries with closely related genera have required molecular phylogenetic analysis.
More Details
Taxonomic history
The Acrossus was established by Mulsant in 1842. A 2024 taxonomic study described a new from South Korea (Acrossus baei) and used mitochondrial COI sequences alongside to clarify phylogenetic relationships within the genus.