Rugilus angularis
(Erichson, 1840)
Rugilus angularis is a of rove beetle in the Staphylinidae, Paederinae. It is a small, ground-dwelling with a transcontinental distribution across North America, ranging from Canada through the United States to Mexico. The species was first described by Wilhelm Ferdinand Erichson in 1840. Like other members of the Rugilus, it is characterized by its compact body form and association with leaf litter and soil .
Pronunciation
How to pronounce Rugilus angularis: /ˈruːɡɪləs æŋˈɡjʊlərɪs/
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Identification
Distinguished from other Rugilus by subtle morphological characters of the male genitalia and external body proportions. Separation from requires examination of aedeagal structures. The species name 'angularis' likely refers to angular body proportions or pronotal shape, though this is not explicitly documented in available sources.
Appearance
Small rove beetle with compact, somewhat flattened body typical of the Rugilus. with 11 segments. Body form adapted for moving through soil and leaf litter. Detailed external not extensively documented in available sources.
Habitat
Found in soil and leaf litter . Specific microhabitat preferences not well documented, but typical for the tribe Lathrobiini which are ground-dwelling in decomposing organic matter.
Distribution
Transcontinental North American distribution: Canada (Lake Superior region), United States (Alabama, District of Columbia, Florida, Indiana, New Hampshire, Rhode Island, South Carolina, Texas, Virginia), and Mexico.
Ecological Role
Presumed predatory role in soil and leaf litter , typical for Paederinae rove beetles, but specific ecological functions not documented.
Similar Taxa
- Other Rugilus speciesRequire examination of male genitalia and subtle external characters for definitive separation; many Rugilus are morphologically similar and geographically overlapping.
- Other Lathrobiini generaShare similar ground-dwelling habits and compact body form; separation requires detailed examination of mouthpart structure, proportions, and genital .