Diabrotica nigrocincta Baly

Species name

Diabrotica nigrocincta Baly 1886: 451

Type locality

Teapa

Type depository

BMNH, holotype, male, verified

Diagnosis

Body length 5.5-6.8 mm. Body width 2.7-3.5 mm. Head basic color black. Antennae filiformfiliform:
slender antennae with antennomeres of similar shape
, bi- or tricolored, antennomeres 1-8 uniformly black, antennomeres 9-10 sulphur yellow, antennomereantennomere:
"segment" of antenna, more or less clearly separated
11 dark apically. Maxillary palpi and labrumlabrum:
the "upper lip" of beetles, a movable sclerite joined under clypeus
black. Pronotumpronotum:
the notum of the prothorax with highly sclerotized pronotal disc
yellow or sulphur yellow, subquadrate, weakly bifoveate, with wide shallow foveae, shagreened with minute wrinkles. Scutellumscutellum:
small, usually triangular shield between the bases of elytra
black. Elytra yellow or rufous, narrowly margined with black. Elytral epipleura completely black or tinged with piceous, sutural angle of elytra round, punctation scattered, fine. Abdomen yellow. Legs black. Aedeagusaedeagus:
the main sclerotized part of the male genitalia; "aedeagus" is used here instead of "median lobe of aedeagus"
symmetric, with five internal sac scleritessclerites:
(here) the sclerotized hooks, spines or plates in the internal sac
.

Known distribution

Mexico

Host plants

Unknown

Potential problems with identification

Diabrotica nigrocincta Baly is very similar to D. h1n sp. nov. and D. hogei Jacoby. They can be separated by the following features: the legs are entirely black in D. nigrocincta, while femora are yellow in D. h1n and D. hogei; the armament of the internal sac is quite different in all three species.