Anillinus sinuaticollis
Jeannel, 1963
Anillinus sinuaticollis is a small described by Jeannel in 1963. It belongs to the tribe Anillina within , a group characterized by reduced or absent and subterranean habits. The is known from the United States, consistent with the broader North distribution of the .
Pronunciation
How to pronounce Anillinus sinuaticollis: /ænˈɪlɪnəs ˌsɪnjuˌətɪˈkɒlɪs/
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Identification
Members of Anillinus are distinguished from other by their minute size, reduced or absent , and shortened that leave several abdominal tergites exposed. Specific identification of A. sinuaticollis requires examination of male and detailed comparison of pronotal and elytral microsculpture with .
Habitat
Subterranean environments including soil, leaf litter, and caves. Anillinus are generally hypogean or endogean, occurring in moist, dark microhabitats.
Distribution
United States; North America.
Behavior
Subterranean and likely non-phototactic due to reduction. Movement is restricted to soil matrix and spaces.
Ecological Role
Predatory or scavenging role in soil and litter ; specific ecological functions for this are undocumented.
Similar Taxa
- Other Anillinus speciesMorphologically similar minute eyeless or reduced- ; separation requires detailed examination of aedeagal structure and pronotal shape.
- Other Anillina genera (e.g., Anillodes, Serranillus)Share subterranean and reduced ; differ in pronotal and elytral proportions and male .
More Details
Taxonomic note
The epithet 'sinuaticollis' refers to the sinuate (wavy) shape of the , a diagnostic feature noted in the original description.
Research status
Like most Anillinus , A. sinuaticollis is poorly known biologically; most records derive from taxonomic revisions rather than ecological study.