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Species name

Diabrotica gratiosa Baly 1886b: 215

 

Type locality

Sta. Carlos

 

Type depository

MNHN, lectotype, male, verified

 

Diagnosis

Body length 6.0-6.6 mm. Body width 3.0-3.4 mm. Head basic color black. Antennae filiform, bi- or tricolored, antennomeres 1-3 yellow, antennomeres 4-8 gradually infuscated, antennomeres 9-10 sulphur yellow, antennomere 11 brussels brown. Maxillary palpi black or piceous, labrum black. Pronotum yellow or sulphur yellow, subquadrate, nonfoveate, shagreened with minute wrinkles. Scutellum piceous or black. Elytra yellow or rufous, with three black bands, connected together forming two round yellow maculae in basal area of elytra. Elytral epipleura completely yellow, sutural angle of elytra round, punctation scattered, fine. Abdomen yellow. Tarsi black or amber brown, tibiae black or chestnut, femora uniform yellow. Aedeagus symmetric, with four internal sac sclerites.

 

Known distribution

Mexico, Panama, Ecuador, Colombia

 

Host plants

Unknown

 

Potential problems with identification

Diabrotica gratiosa Baly is very similar to D. adelpha Jacoby. They can be separated by the following features: the body of D. adelpha is more convex than in D. gratiosa; aedeagus in D. adelpha is asymmetric, but symmetric in D. gratiosa; the armament of the internal sac is quite different in both species.