Discoderus crassicollis
G.Horn, 1891
Discoderus crassicollis is a of ground beetle in the Carabidae, described by George Henry Horn in 1891. It belongs to the Discoderus, a group of small carabid beetles found in North America. The species name 'crassicollis' refers to its notably thickened neck region (pronotum). Very few observations exist, with only 2 records documented on iNaturalist.
Pronunciation
How to pronounce Discoderus crassicollis: /dɪsˈkoʊdərəs ˌkræsɪˈkɒlɪs/
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Identification
Distinguished from other Discoderus by the thickened pronotum referenced in its specific epithet. Separation from requires detailed examination of pronotal shape, elytral striation patterns, and male genitalia. The Discoderus itself is characterized by small size, short , and reduced wings.
Appearance
Small ground beetle with a notably thickened pronotum (the 'crassicollis' or thick-necked condition). As a member of Discoderus, likely exhibits the -characteristic compact body form with relatively short . Specific coloration and body proportions require examination of .
Distribution
Documented from the United States. Precise state-level distribution records are sparse; the is known from North America with confirmed presence in the USA.
Similar Taxa
- Other Discoderus species share small size, compact body, and short ; require detailed morphological examination to distinguish, particularly of pronotal thickness and shape
More Details
Taxonomic note
The Discoderus is classified within the subtribe Harpalina of tribe Harpalini, subtribe Harpalinae. The specific epithet 'crassicollis' is Latin for 'thick-necked', directly describing a primary morphological feature.