Dyschirius obscurus

Authority: 

(Gyllenhal, 1827)
Size: 3.5-4.5mm
Basic colour: Uniformaly brassy black, surfaced dulled by fine microsculpture.
Leg colour: Dark brown or black.
Confusion species: Dyschirius thoracicus

Extremly local -  Sussex, Kent and Norfolk in England. Lough Neagh in Ireland. Sometimes abundant.

Drypta dentata

Authority: 

(Rossi, 1790)
Size: 7-8.5mm
Basic colour: Shining blue or green metallic.
Pronotoum: Elongate and narrower than the head, cylindrical without defined side margins.
Leg colour: Brown.

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