Renardia nigrella
(LeConte, 1863)
unmargined rove beetle
Renardia nigrella is a of unmargined rove beetle in the Staphylinidae, first described by LeConte in 1863. It belongs to the Osoriinae, a group of small, typically soil-dwelling rove beetles. The species is known from scattered records across western and eastern North America.
Pronunciation
How to pronounce Renardia nigrella: /rɛˈnardja nɪˈɡrɛlla/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
As an unmargined rove beetle, Renardia nigrella lacks the distinct pale marginal band on the that characterizes many other Osoriinae. The specific epithet 'nigrella' (diminutive of black) suggests a predominantly dark coloration. Definitive identification requires examination of genitalic structures and other microscopic characters typical of the .
Distribution
Recorded from Canada (Alberta, British Columbia) and the United States (California, District of Columbia, Idaho, New York, Oregon, Washington). The disjunct distribution pattern suggests possible under-sampling rather than truly fragmented range.
Similar Taxa
- Other OsoriinaeMany osoriine rove beetles share the small, compact body form and reduced wing development; unmargined are distinguished from margined species by the absence of pale elytral margins.
- RenardiaOther in this require careful comparison of genitalic and external morphological characters for separation.
More Details
Taxonomic history
Originally described as Isomalus nigrellus by LeConte in 1863, later transferred to Renardia. The Renardia remains poorly studied, with most known from few specimens.
Data deficiency
With only 2 observations in iNaturalist and sparse collection records, this exemplifies the under-documented nature of small, soil-dwelling staphylinid beetles.