Diabrotica undecimpunctata duodecimnotata Harold

Species name

Diabrotica undecimpunctata duodecimnotata Harold 1875: 91

Type locality

Mexico

Type depository

MNHN, lectotype, female, verified

Diagnosis

Body length 5.0-7.0 mm. Body width 2.6-3.6 mm. Head basic color black. Antennae filiformfiliform:
slender antennae with antennomeres of similar shape
, bi- or tricolored, antennomeres 1-3 yellow, upper sides darkened, antennomeres 4-11 black. 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, bifoveate, with small round foveae, shagreened with minute wrinkles. Scutellumscutellum:
small, usually triangular shield between the bases of elytra
black. Elytra green, yellow or rufous, with 12 round black maculae. Elytral epipleura completely yellow, sutural anglesutural angle:
the posterior angle or apex of the elytron near the suture
of elytra round, punctation scattered, fine. Abdomen black in the middle, yellow laterally. Tarsi and tibiae black, femora bicolored: yellow, from 1/2 to 2/3 is darkened with black or brown. 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

Mexico

Host plants

Helianthus L., Medicago sativa L., Gossypium L., Hordeum L., corn (Zea mays L.), Solanum tuberosum L. (Clark et al., 2004)

Potential problems with identification

Diabrotica undecimpunctata duodecimnotata Harold can be separated from other subspecies by the following features: abdomen is black medially in D. undecimpunctata duodecimnotata, entirely yellow in D. undecimpunctata tenella and entirely black in D. undecimpunctata undecimpunctata; legs, usually only femora, partly pale in D. undecimpunctata duodecimnotata, but entirely black in D. undecimpunctata undecimpunctata; spots on elytra in D. undecimpunctata duodecimnotata are smaller than in D. undecimpunctata undecimpunctata and D. undecimpunctata howardi. Diabrotica undecimpunctata duodecimnotata is smaller and more slender than Diabrotica undecimpunctata howardi.