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Species name

Diabrotica quadricollis Jacoby 1887: 516

 

Type locality

Guatemala, Cubilguitz in Vera Paz

 

Type depository

BMNH, holotype, male, verified

 

Diagnosis

Body length 5.8-6.4 mm. Body width 3.0-3.2 mm. Head basic color black. Antennae serrate, with thickened antennomeres 4-8, bi- or tricolored, antennomere 1 uniformly yellow, antennomeres 2-3 yellow, upper sides darkened, antennomeres 4-8 cinnamon brown, antennomeres 9-10 sulphur yellow, antennomere 11 dark apically. Maxillary palpi black or chestnut, labrum black. Pronotum yellow or light cadmium, quadrate, nonfoveate, shagreened with microsculptural narrow, long meshes. Scutellum black or amber brown. Elytra yellow or rufous, with two black bands, one on the base, another behind the middle of elytron. Bands may be connected together, than elytra become almost entirely black with small yellow spots. Elytral epipleura completely yellow, sutural angle of elytra round, punctation scattered, fine. Abdomen yellow. Tarsi and tibiae black or chestnut, femora yellow. Aedeagus symmetric, with five internal sac sclerites.

 

Known distribution

Honduras, Guatemala

 

Host plants

Unknown

 

Potential problems with identification

Diabrotica quadricollis Jacoby is very similar to D. adelpha Harold and D. godmani Jacoby. They can be separated by the following features: scutellum is yellow in D. godmani, but black or amber brown in D. quadricollis; legs are bicolored in D. quadricollis, but yellow in D. godmani; internal sac of aedeagus is completely different in all species.