Xanthogaleruca luteola

Size
5.5-7mm
Basic colour
Yellowish
Pattern colour
Head with a dark spot (females) or transverse band (males). Elytra with a dark longitudinal band starting at the shoulder, and often a shorter 'smudged' line between this and the suture..
Number of spots
See pattern & pronotum
Pronotum
Three variable dark spots, the middle one often roughly hourglass-shaped, the side ones simpler and sometimes fainter.
Leg colour
As basic colour