Size: 2.8-3.8mm Basic colour: Very dark blue or blackish. Pattern colour: None Number of spots: None Pronotoum: As basic colour Leg colour: As basic colour
Size: 3-4mm Basic colour: Deep metallic blue. Pattern colour: None Number of spots: None Spot fusions: None Other colour forms: None Pronotoum: As basic colour Leg colour: As basic colour Confusion species: Altica oleracea , Confusion species: Altica palustris
Recognised as British in 2000, though specimens attributable to it have now been found in collections going back at least as far as 1939. It has previously been confused with A. palustris and A. pusilla var. montana.
Size: 3.5-4.5mm Basic colour: Shiny metallic greenish, sometimes blue, rarely brassy. Pattern colour: None Number of spots: None Other colour forms: Sometimes Pronotoum: As basic colour Leg colour: As basic colour Confusion species: Altica lythri
