Teretriini

Bickhardt, 1914

clown beetles

Genus Guides

2

Teretriini is a tribe of clown beetles ( Histeridae) containing approximately 5 and more than 90 described . The tribe was established by Bickhardt in 1914 and is classified within the Abraeinae. Teretriini species share the general histerid body plan but are distinguished by specific morphological features, particularly in antennal and prosternal structure. The tribe has a global distribution with species found across multiple continents.

Teretrius montanus by (c) Bennett Grappone, some rights reserved (CC BY), uploaded by Bennett Grappone. Used under a CC-BY license.

Pronunciation

How to pronounce Teretriini: /tɛˌrɛˈtriː.aɪ.naɪ/

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Identification

Teretriini can be distinguished from other histerid tribes by the structure of the antennal club and prosternal configuration. Members typically possess a compact, oval to elongate body form characteristic of Abraeinae. The tribe includes the Teretrius, which contains with distinctive body proportions and surface sculpturing. Identification to genus level requires examination of specific characters including the form of the mesosternum and the arrangement of antennal segments.

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Distribution

Teretriini has a distribution with records from multiple continents. The Teretrius is particularly widespread. Specific distribution patterns vary by genus: Pleuroleptus, Teretriosoma, Teretrius, Trypolister, and Xiphonotus each occupy distinct geographic ranges with some overlap. The tribe occurs in both temperate and tropical regions.

Similar Taxa

  • AbraeiniBoth tribes belong to Abraeinae and share compact body forms, but Teretriini differs in antennal club structure and prosternal .
  • HisteriniHisterini is in Histerinae rather than Abraeinae; Teretriini are generally smaller and have different antennal proportions.

More Details

Authorship and Classification

The tribe was described by Bickhardt in 1914. Some sources may cite alternative authorship dates; the 1914 date from Catalogue of Life is preferred. The tribe's placement in Abraeinae rather than Histerinae reflects modern phylogenetic understanding of Histeridae.

Taxonomic Composition

The five recognized are Pleuroleptus (1937), Teretriosoma (1873), Teretrius (1834), Trypolister (1916), and Xiphonotus (1854). The genus Teretrius, established by Erichson in 1834, is the oldest and most -rich within the tribe.

Sources and further reading