Diabrotica cristata (Harris)

Species name

Diabrotica cristata Harris 1836: 90 as Galeruca

Type locality

Northampton, Massachusetts

Type depository

MCZ, lectotype, female, verified

Synonyms

atripennis Say 1823: 461 as Galleruca (type locality: Missouri; type depository: type is lost)

fossata LeConte 1858: 88 (type locality: Texas; type depository: MCZ, lectotype, female)

Diagnosis

Body length 4.1-4.7 mm. Body width 1.7-2.2 mm. Head basic color black. Antennae filiformfiliform:
slender antennae with antennomeres of similar shape
, piceous. Maxillary palpi black or piceous, labrumlabrum:
the "upper lip" of beetles, a movable sclerite joined under clypeus
piceous. Pronotumpronotum:
the notum of the prothorax with highly sclerotized pronotal disc
light cadmium with diffuse piceous macula basally, subquadrate, deeply bifoveate, not shagreened. Scutellumscutellum:
small, usually triangular shield between the bases of elytra
piceous or black. Elytra black or piceous, epipleura completely black or tinged with piceous. Elytral surface with two distinct sinuatesinuate:
curved in some way
sulci, strongest behind the humeral callus and extending beyond the middle, humeral plicae distinct, sutural anglesutural angle:
the posterior angle or apex of the elytron near the suture
of elytra round, punctation scattered, fine. Abdomen piceous or black. Legs black or chestnut. 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

CANADA: Ontario; USA: AL, AR, CO, CT, DC, GA, IL, IA, KS, LA, MD, MA, MI, MN, MO, NE, NH, NJ, NM, NY, NC, ND, OH, OK, PA, SD, TN, TX, VA, WY; Mexico. (Krysan & Smith, 1987a)

Host plants

Perennial grasses (Andropogon gerardii Vitman), Poaceae (Yaro & Krysan, 1986). Zea mays L., radish (Raphanus sativus L.), Cucurbita foetidissima Kunth in H.B.K., lima bean (Phaseolus lunatus L.), Asteraceae (Clark et al., 2004)