Size: 1.8-2.1mm
Basic colour: Black head & pronotum; elytra black with violet reflection.
Pattern colour: None
Number of spots: None
Pronotoum: Black
Leg colour: Black

Size: 1.5-1.7mm
Basic colour: Black with a weak metallic reflection.
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour
Confusion species: Aphthona euphorbiae

Size: 2.8-4.1mm
Basic colour: Dull, variable metallic bluish or greenish.
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour
Confusion species: Altica carinthiaca
, Confusion species: Altica oleracea

Size: 3.0-4.2mm
Basic colour: Dull metallic greenish; sometimes bright blue.
Pattern colour: None
Number of spots: None
Pronotoum: As basic colour
Leg colour: As basic colour
Confusion species: Altica carinthiaca
, Confusion species: Altica palustris

Size: 4.5-5.5mm
Basic colour: Metallic purple-blue or blue, usually not very shiny. Sometimes greenish, rarely black.
Pattern colour: None
Number of spots: None
Other colour forms: Sometimes
Pronotoum: As basic colour
Leg colour: As basic colour
Confusion species: Altica brevicollis