Species name

Diabrotica graminea Baly 1886a: 443


Common name

Green beetle


Type locality

Porto Rica


Type depository

BMNH, lectotype, female, verified



aeruginea Fabricius 1775: 117; as Cistela (type locality: Africa; type depository: ZMUC, lectotype, female, verified) nomen oblitum

impressa Suffrian 1867: 309 (type locality: Cuba; type depository: ESUH, lectotype, male, verified)



Body length 6.2-6.4 mm. Body width 3.0-3.4 mm. Head basic color black. Antennae filiform, bi- or tricolored, antennomere 1 sulphur yellow or pale olivine, antennomeres 2-3 yellow or pale olivine, antennomeres 4-8 gradually infuscated, antennomeres 9-10 sulphur yellow or paris green, antennomere 11 brussels brown. Maxillary palpi black or piceous, labrum black. Pronotum paris green, green, yellow or sulphur yellow, subquadrate, nonfoveate, shagreened with minute wrinkles. Scutellum piceous or black. Elytra paris green, yellow or rufous. Elytral epipleura completely yellow or completely green, sutural angle of elytra round, punctation scattered, fine. Abdomen yellow. Tarsi and tibiae black. Femora yellow, sulphur yellow or paris green. Aedeagus symmetric, with four internal sac sclerites.


Known distribution

West Indies


Host plants

Amaranthus spinosus L., bean, beet, sugar-cane, castor-oil bean, maize, cowpeas, cucumbers, egg-plants, and many other plants (Woloott, 1916)


Potential problems with identification

Diabrotica graminea Baly is very similar to D. obscura Jacoby. They can be separated by the shape of the internal sac sclerite 4b.