Description: A small (4.5-5.5mm) red-brown and black ground beetle found on riverine floodplains, particularly near the sea. Lives in crevices and among vegetation on riverbanks. Very local.

NI account: Largely coastal and very local. There is one inland record, for Clonbrock, Galway, given by Johnson and Halbert (1902).

Ecology: Alluvial soil with some saline influence appears to be a common element in its Irish sites, and it may be to some extent halophilic. It occupies the same sorts of habitats as Trechus micros, although the latter has been recorded mainly inland.

Distribution: A Eurasian Wide-temperate species (65) distributed across north and central Europe to southern France and east to central Siberia. Introduced to N. America.

Similar Species: Trechus micros: pronotum pubescent; duller, more yellowish

Key Identification Features:

• Sutural stria of elytra recurrent at apex (Fig. 35)
• Frontal furrows running round to the back of the eyes (Fig. 32)
• Only elytra pubescent
• Bright reddish-yellow, dark macula on elytra well developed

Distribution Map from NBN: Blemus discus at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Blemus discus at iNaturalist World Species Observations database.

GBIF data for Blemus discus | Classification: Insecta, Coleoptera, Carabidae, Blemus

Thumbnails for genus Blemus