Anillinus erwini

Sokolov & Carlton, 2004

Anillinus erwini is a of ground beetle in the Carabidae, first described by Sokolov and Carlton in 2004. It is a member of the tribe Anillina, a group of small, often eyeless or reduced- beetles adapted to subterranean or cryptic . The species is known from the United States and is part of a containing numerous species with limited distributions.

Pronunciation

How to pronounce Anillinus erwini: /ˌænɪˈlaɪnəs ˈɛrwɪnaɪ/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Anillinus erwini can be distinguished from other Anillinus through subtle morphological differences in genitalia, elytral , and body proportions, as detailed in the original species description by Sokolov and Carlton (2004). Accurate identification requires examination of and comparison with closely related species in the .

Appearance

As a member of the tribe Anillina, Anillinus erwini is likely small-bodied with reduced or absent , short , and elongated, slender legs adapted for moving through soil or leaf litter. The body is typically compact and somewhat flattened, with smooth or lightly sculptured . Specific coloration and body proportions for this are not documented in available sources.

Habitat

Members of the Anillinus typically inhabit subterranean environments, including deep soil layers, caves, and forest floor leaf litter. They are often associated with mesic forest and are rarely collected at the surface.

Distribution

Known from the United States. Specific locality data is limited in available sources.

Behavior

As a member of the tribe Anillina, this is likely adapted to subterranean locomotion, moving through soil cracks and spaces. Surface activity, if it occurs, is probably rare and .

Similar Taxa

Other Anillinus speciesNumerous congeneric exist in the southeastern United States, distinguished by subtle morphological features requiring detailed examination.
Other Anillina tribe members (e.g., Anillus, Zeanillus)Share reduced , small size, and subterranean habits, but differ in geographic distribution and detailed .

More Details

Etymology

The epithet 'erwini' honors Terry Erwin (1940-2020), a renowned entomologist who pioneered fogging techniques for collecting beetles and made substantial contributions to the study of ground beetle diversity.

Taxonomic Note

Anillinus is a diverse within the tribe Anillina, with many having highly restricted distributions. The group is taxonomically challenging due to morphological convergence associated with subterranean lifestyles.