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Species name

Diabrotica signifera Jacoby 1887: 507

 

Type locality

Granada, Nicaragua

 

Type depository

BMNH, lectotype, male, verified

 

Diagnosis

Body length 4.2-4.5 mm. Body width 1.9-2.1 mm. Head basic color black. Antennae filiform, bi- or tricolored, antennomeres 1-3 sulphur yellow, antennomeres 4-8 gradually infuscated, antennomeres 9-10 light cadmium, antennomere 11 brussels brown. Maxillary palpi black or piceous, labrum black or chestnut. Pronotum yellow or yellow ocher, subquadrate, bifoveate, with small round foveae, shagreened with minute wrinkles. Scutellum black. Elytra yellow or rufous, with three black bands, one on elytral base, one in the middle, third at the apex of elytra; medial and apical bands interrupted in sutural area. Elytral epipleura completely yellow, sutural angle of elytra round, punctation scattered, fine. Abdomen yellow or pygidium (at least the apex) black. Tarsi and tibiae black, femora yellow or yellow ocher. Aedeagus symmetric, with four internal sac sclerites.

 

Known distribution

Guatemala, Nicaragua, Panama

 

Host plants

Unknown

 

Potential problems with identification

Diabrotica signifera Jacoby is very similar to D. pygidialis Jacoby. They can be separated by the following features: scutellum is black in D. signifera, but yellow in D. pygidialis; male antennae exceed body length in D. signifera, but not longer than body in D. pygidialis.