Diabrotica regularis Jacoby 1887: 509
BMNH, lectotype, female, verified
Body length 4.1-4.9 mm. Body width 2.1-2.7 mm. Head basic color black. Antennae filiform, bi- or tricolored, antennomeres 1-3 yellow, antennomeres 4-8 gradually infuscated, antennomeres 9-10 yellow ocher, antennomere 11 dark apically. Maxillary palpi yellow, labrum black. Pronotum yellow or mustard yellow, subquadrate, weakly bifoveate, with wide shallow foveae, shagreened with minute wrinkles. Scutellum black or amber brown. Elytra yellow or rufous, with two black bands, one on the base, another behind the middle. Elytral epipleura completely yellow, sutural angle of elytra obtuse, punctation scattered, coarse. Abdomen yellow. Legs yellow.
Potential problems with identification
Diabrotica regularis Jacoby is very similar to D. godmani Jacoby and D. g1n. D. regularis may be a possible synonym of one of these species. They can be separated only by the size difference: D. regularis is much smaller than both similar species.