Nomius pygmaeus
(Dejean, 1831)
stink beetle, stinking beetle
Nomius pygmaeus is a small in , the sole representative of tribe Psydrini. emit a distinctive repugnant odor when captured or disturbed, earning the "stink ." The exhibits a remarkably disjunct global distribution, occurring in North America from Canada to California and sporadically across parts of Europe and southwestern Asia.

Pronunciation
How to pronounce Nomius pygmaeus: /ˈnoʊ.mi.us pɪɡˈmiː.ʊs/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other small by its membership in the isolated tribe Psydrini; specific diagnostic characters for field identification are not well documented in available sources. The "stink " refers to its defensive odor emission when handled.
Images
Habitat
Forest zones in mountainous regions; one documented observed in clearings at approximately 1100 m elevation in the Talysh mountains. Specific preferences in North portions of its range are not well documented.
Distribution
Disjunct distribution spanning three continents: North America (Canada, Lake Superior region to California); Europe (France, Corsica, Sardinia, Bosnia-Herzegovina, Greece); and southwestern Asia (Talysh region, southwest coast of the Caspian Sea in what is now Azerbaijan).
Behavior
have been observed flying very low at sunset in forest clearings. When captured, individuals emit a repugnant odor reminiscent of that produced by (Chrysopa, ), serving as a chemical defense mechanism.
Sources and further reading
- BugGuide
- Wikipedia
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
- Archive — Bug of the Week
- Cerambycidae | Beetles In The Bush | Page 10
- Formicidae | Beetles In The Bush | Page 2
- Flower ants? Check again! | Beetles In The Bush
- Sur la distribution géographique de Nomius pygmaeus Dej. [Col. Carabidae]