Diabrotica olivieri Jacoby 1887: 526
BMNH, lectotype, female, verified
Body length 5.7-6.1 mm. Body width 2.9-3.0 mm. Head basic color black. Antennae filiform, bi- or tricolored, antennomeres 1-3 and 9-10 sulphur yellow, antennomeres 4-8 cinnamon brown, antennomere 11 dark apically. Pronotum yellow or mustard yellow, subquadrate, weakly bifoveate, with wide shallow foveae, not shagreened. Scutellum yellow. Elytra yellow or rufous, maculate, with one black macula on the apex of each elytron. Elytral epipleura completely yellow, sutural angle of elytra obtuse-angled, punctation dense, fine. Abdomen yellow or pygidium (at least the apex) black. Tarsi black or chestnut, tibia black or piceous. Femora yellow or yellow ocher. Aedeagus symmetric, with five internal sac sclerites.
Mexico, Belize, Nicaragua, Costa Rica
Potential problems with identification
Diabrotica olivieri Jacoby is very similar to D. apicalis Baly and D. obscura Jacoby. They can be separated by the following features: elytra with apical black macula on each elytron in D. olivieri, but completely yellow in D. obscura; D. apicalis is larger than D. olivieri; elytrla sides are almost parallel in D. apicalis, while the body shape in D. olivieri is roundish; elytra punctuation is stronger in D. olivieri than in D. apicalis, so elytra in D. olivieri have dull luster, whereas they are shining in D. apicalis.