Diabrotica viridicollis Jacoby

Species name

Diabrotica viridicollis Jacoby 1887: 515

Type locality

Nicaragua, Chontales

Type depository

BMNH, lectotype, male, verified

Diagnosis

Body length 6.6-6.7 mm. Body width 3.8-3.9 mm. Head basic color yellow. Antennae serrateserrate:
in reference to antennae, saw-like, often with a sharp ridge on the outer margin
, with thickened antennomeres 4-8, bi- or tricolored, antennomeres 1-3 pale olivine, antennomeres 4-8 gradually infuscated, antennomeres 9-10 yellow ocher, antennomereantennomere:
"segment" of antenna, more or less clearly separated
11 cinnamon brown. Maxillary palpi yellow or yellow ocher, labrumlabrum:
the "upper lip" of beetles, a movable sclerite joined under clypeus
black or chestnut. Pronotumpronotum:
the notum of the prothorax with highly sclerotized pronotal disc
paris green or green, subquadrate, nonfoveate, not shagreened. Scutellumscutellum:
small, usually triangular shield between the bases of elytra
black or amber brown. Elytra bicolored, with yellow disk and green margins, with two transverse bandsbands:
(here) transverse maculae on the beetle elytra
, frequently redused to a variable degree, associated with humeral and sutural black or chestnut short vittae or spots. Elytral epipleura completely green. Elytra surface not sulcatesulcate:
bearing the carinae or ridges on the elytron
, humeral plicae absent. Sutural anglesutural angle:
the posterior angle or apex of the elytron near the suture
of elytra obtuse-angled, punctation dense, coarse. Abdomen pale olivine or green. Tarsi yellow, tibiae bicolored, yellow, outer edge with piceous or testaceous line, or extensively darkened. Femora paris green. Aedeagusaedeagus:
the main sclerotized part of the male genitalia; "aedeagus" is used here instead of "median lobe of aedeagus"
symmetric, with four internal sac scleritessclerites:
(here) the sclerotized hooks, spines or plates in the internal sac
.

Known distribution

Nicaragua, Costa Rica, Ecuador

Host plants

Unknown

Potential problems with identification

Diabrotica viridicollis Jacoby is very similar to D. v1n, D. v2n and D. v3n. They can be separated by the following features: head is yellow with chestnut vertexvertex:
the upper part of the head capsule behind the eyes
in D. viridicollis, green with brownish olive vertexvertex:
the upper part of the head capsule behind the eyes
in D. v1n and black in D. v2n and D. v3n; pronotumpronotum:
the notum of the prothorax with highly sclerotized pronotal disc
is nonfoveate in D. viridicollis, but foveate in D. v1n, D. v2n and D. v3n; pronotumpronotum:
the notum of the prothorax with highly sclerotized pronotal disc
not shagreened in D. viridicollis, but shagreened in D. v3n; black bandsbands:
(here) transverse maculae on the beetle elytra
are strongly marked in D. viridicollis, but reduced to a substantial degree in D. v1n; body shape is more convex and wider in D. viridicollis than in D. v1n and D. v3n; D. viridicollis is larger than D. v3n, but smaller than D. v2n.