Species name

Diabrotica novemmaculata Jacoby 1878: 995


Type locality

Costa Rica


Type depository

MCZ, lectotype, female, verified



Body length 7.4-8.9 mm. Body width 3.4-4.1 mm. Head basic color black. Antennae filiform, bi- or tricolored, antennomeres 2-3 yellow, antennomeres 4-8 gradually infuscated, antennomeres 9-10 yellow ocher, antennomere 11 dark apically. Maxillary palpi black or chestnut, labrum black. Pronotum yellow or light cadmium, quadrate, weakly bifoveate, with wide shallow foveae, shagreened with minute wrinkles. Scutellum black or amber brown. Elytra yellow or rufous, maculate, with three short lines or small spots (one before, two - behind the middle of each elytron), associated with short humeral and sutural black vittae. Elytral epipleura completely yellow, sutural angle of elytra round, punctation scattered, fine. Abdomen yellow. Legs yellow. Aedeagus symmetric, with five internal sac sclerites.


Known distribution

Costa Rica, Panama


Host plants



Potential problems with identification

Diabrotica novemmaculata Jacoby is similar to D. apicicornis Jacoby, D. brevilineata Jacoby and D. fulvicornis Jacoby. They can be separated by the following features: scutellum is black or amber brown in D. novemmaculata, but yellow in D. apicicornis, D. brevilineata and D. fulvicornis; the head is black in D. novemmaculata, but yellow in D. apicicornis and D. brevilineata; the tibiae are yellow in D. novemmaculata, but black in D. apicicornis; D. novemmaculata is visibly larger than all these similar species.