Trichiorhyssemus

Clouët, 1901

Species Guides

Trichiorhyssemus riparius

Trichiorhyssemus is a of aphodiine dung beetles established by Clouët in 1901. The genus contains more than 20 described distributed across the Palearctic, Oriental, and Afrotropical regions. Species within this genus are small dung beetles, with at least one species (T. immaturus) showing morphological characters intermediate between Trichiorhyssemus and the related genus Neotrichiorhyssemus.

Pronunciation

How to pronounce Trichiorhyssemus: /ˌtrɪkiəˈrɪsəməs/

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Identification

Members of Trichiorhyssemus can be distinguished from the closely related Neotrichiorhyssemus by a combination of morphological characters, though at least one (T. immaturus) exhibits intermediate features between these two genera. The genus is placed in the subtribe Rhyssemina within the tribe Psammodiini.

Distribution

Recorded from the Palearctic, Oriental, and Afrotropical biogeographic regions. Specific localities include China (type locality for T. immaturus), Japan (Tanegashima Island, Ryukyu Islands, northern Japan), Taiwan, and parts of Southeast Asia.

Similar Taxa

NeotrichiorhyssemusClosely related distinguished by morphological characters; the boundary between these genera has been questioned due to intermediate forms such as T. immaturus

More Details

Taxonomic Uncertainty

The generic limits between Trichiorhyssemus and Neotrichiorhyssemus remain under discussion, with T. immaturus exhibiting characters intermediate between the two