Laemostenus complanatus
(Dejean, 1828)
Cosmopolitan Ground Beetle
Laemostenus complanatus is a ground beetle in the Carabidae, native to Europe. It has been introduced to the Azores, where it is now established on multiple islands. The is sometimes called the Ground Beetle, reflecting its spread beyond its native range. It belongs to a of predominantly predatory beetles.
Pronunciation
How to pronounce Laemostenus complanatus: /laɪˈmɒstənəs kɒmpləˈneɪtəs/
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Identification
As a member of Laemostenus, this has a somewhat flattened body form (reflected in the species epithet 'complanatus,' meaning flattened or leveled). The is characterized by long legs adapted for running and a generally elongate body shape. Specific distinguishing features from require examination of genitalia and fine details of elytral and punctation.
Images
Distribution
Native to Europe. Introduced and established in the Azores, with records from Faial, Flores, Graciosa, Pico, and São Jorge islands.
Similar Taxa
- Laemostenus terricolaA widespread congeneric in Europe; separation requires detailed examination of male genitalia and subtle differences in body proportions and elytral microsculpture.
- Other Carabidae genera (e.g., Carabus, Abax)General resemblance as ground beetles, but Laemostenus is distinguished by its combination of long legs, somewhat flattened body, and specific antennal and mandibular structures.
More Details
Invasive status in the Azores
The has been recorded from five islands in the Azores archipelago, indicating successful establishment following human-mediated introduction. Its ecological impacts in this introduced range have not been well documented.