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Species name

Diabrotica variegata Jacoby 1887: 527

 

Type locality

Mexico, Presidio

 

Type depository

BMNH, lectotype, male, verified

 

Diagnosis

Body length 5.1-6.5 mm. Body width 2.6-3.5 mm. Head basic color black. Antennae filiform, bi- or tricolored, antennomeres 1-3 pale olivine, antennomeres 4-8 gradually infuscated, antennomeres 9-10 olive ocher, antennomere 11 dark apically. Maxillary palpi black or chestnut, labrum black. Pronotum black or chestnut, subquadrate, nonfoveate, not shagreened. Scutellum black or amber brown. Elytra green, with three chestnut bands, usually connected together laterally and along suture, or reduced to variable extent. Elytral epipleura completely green, sutural angle of elytra dentiform, punctation dense, coarse. Abdomen pale olivine or green. Tarsi and tibiae black or piceous, femora pale olivine. Aedeagus symmetric, with wo internal sac sclerites.

 

Known distribution

Mexico

 

Host plants

Specimens in the USNM collection were collected on Cucurbita L. and tomato.

 

Potential problems with identification

Diabrotica variegata Jacoby is similar to D. adelpha Harold and D. sinuata (Olivier). They can be separated by the following features: pronotum is chestnut in D. variegata, but yellow in D. adelpha and D. sinuata; the shape of the internal sac sclerites allows distinguishing D.variegata from the similar species clearly.