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Species name

Diabrotica pygidialis Jacoby 1887: 503

 

Type locality

Panama, Volcan de Chiriqui

 

Type depository

BMNH, lectotype, male, verified

 

Diagnosis

Body length 5.2-5.8 mm. Body width 2.5-2.8 mm. Head basic color black. Antennae serrate, with thickened antennomeres 4-8, bi- or tricolored, antennomeres 1-3 yellow, upper sides darkened, antennomeres 4-8 brussels brown, antennomeres 9-10 sulphur yellow, antennomere 11 dark apically. Maxillary palpi black or chestnut, labrum black. Pronotum yellow or mustard yellow, transverse, deeply bifoveate, not shagreened. Scutellum yellow. Elytra uniformly yellow ocher, black or piceous, maculate, with three sharp-edged yellow ocher maculae on each elytron. Elytral epipleura completely black, narrow interior edge is pale or epipleura completely yellow. Sutural angle of elytra round, punctation dense, coarse. Abdomen yellow, pygidium (at least the apex) black. Tarsi and tibiae black or piceous, male protibiae thickened, femora yellow or yellow ocher. Aedeagus symmetric, with five internal sac sclerites.

 

Known distribution

Mexico, Belize, Honduras, Costa Rica, Panama

 

Host plants

Unknown

 

Potential problems with identification

Diabrotica pygidialis Jacoby is very similar to D. e2n and D. obscura Jacoby. They can be separated by the following features: scutellum is yellow in D. pygidialis, but black in both other species; there are five internal sac sclerites in D. pygidialis, but four sclerites in D. obscura.