Diabrotica pygidialis Jacoby 1887: 503
Panama, Volcan de Chiriqui
BMNH, lectotype, male, verified
Body length 5.2-5.8 mm. Body width 2.5-2.8 mm. Head basic color black. 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 yellow, upper sides darkened, antennomeres 4-8 brussels brown, antennomeres 9-10 sulphur yellow, antennomereantennomere:
"segment" of antenna, more or less clearly separated
11 dark apically. Maxillary palpi black or chestnut, 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 mustard yellow, transverse, deeply bifoveate, not shagreened. Scutellumscutellum:
small, usually triangular shield between the bases of elytra
yellow. Elytra uniformly yellow ocher, black or piceous, maculatemaculate:
(here) marked by maculae or patches of a different shape and size, usually clearly separated from each other
, with three sharp-edged yellow ocher maculae on each elytronelytron:
<em>(pl. elytra)</em> the fore highly sclerotized wing of beetle
. Elytral epipleura completely black, narrow interior edge is pale or epipleura completely yellow. Sutural anglesutural angle:
the posterior angle or apex of the elytron near the suture
of elytra round, punctation dense, coarse. Abdomen yellow, pygidium (at least the apexapex:
<em>(pl. apices)</em> the far distal end of a structure; opposite of base
) black. Tarsi and tibiae black or piceous, male protibiaeprotibiae:
tibiae of fore legs
thickened, femora yellow or yellow ocher. 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
.
Mexico, Belize, Honduras, Costa Rica, Panama
Unknown
Diabrotica pygidialis Jacoby is very similar to D. e2n and D. obscura Jacoby. They can be separated by the following features: scutellumscutellum:
small, usually triangular shield between the bases of elytra
is yellow in D. pygidialis, but black in both other species; there are five internal sac scleritessclerites:
(here) the sclerotized hooks, spines or plates in the internal sac
in D. pygidialis, but four scleritessclerites:
(here) the sclerotized hooks, spines or plates in the internal sac
in D. obscura.