Cercyon roseni
Knisch, 1922
Cercyon roseni is a small in the , first described by Knisch in 1922. It belongs to the Cercyon, a diverse group of commonly found in moist or aquatic environments. The is documented across much of North America, with records spanning from Canada to the United States.
Pronunciation
How to pronounce Cercyon roseni: /ˈsɛr.si.ɒn ˈroʊ.se.ni/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Members of Cercyon are small, oval-shaped typically measuring 2-5 mm in length. They are characterized by short, clubbed with a distinct 3-segmented , and a that is often margined or with distinct edges. Identification to level within Cercyon requires examination of male and other fine morphological details not readily visible in field observations.
Habitat
in the Cercyon are typically found in moist microhabitats including decaying matter, , compost, and the margins of ponds and streams. They are often associated with environments rich in decomposing material.
Distribution
Cercyon roseni is recorded from Canada (Alberta, British Columbia, Manitoba, New Brunswick, Northwest Territories, Nova Scotia, Ontario, Quebec) and the United States (California, Connecticut, Illinois, Indiana, Maine, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, Nevada, New York, Ohio, Pennsylvania, Rhode Island, South Dakota, Wisconsin).
Ecological Role
As a , Cercyon roseni likely contributes to by feeding on decaying matter and microorganisms in moist .
Similar Taxa
- Cercyon unipunctatusSimilar small size and preferences; distinguished by specific elytral markings and male structure.
- Cercyon analisOverlapping distribution and ; requires detailed examination of pronotal and elytral sculpturing for separation.
More Details
Taxonomic Note
Catalogue of Life lists Cercyon roseni as a synonym, though GBIF and NCBI recognize it as an accepted . This discrepancy suggests ongoing taxonomic evaluation.
Collection Records
The is represented by only one observation in iNaturalist as of the available data, indicating it may be underreported or genuinely uncommon in citizen science datasets.