Badister (Badister) vandykei Ball 1959

Badister vandykei
The color pattern and prominent posterior angles of the pronotum will separate this species from all other North American members of the genus known to me. The presence of a feeble dorsal " hook " on the apex of the median lobe will separate the males of B. vandykei from the males of B. maculatus and B. elegans, the species which resemble this one with respect to color pattern.
Description. — Type, a male. 20 mi[les] N[orth] Comondu, L.[ower] Cal. [ifornia], VII.23.38, (Michelbacher and Ross), [California Academy of Sciences Coll.]. Length 6.05 mm., width 2.65 mm. Color : the following' black — head, pronotum (excepting lateral margins), propleurae and basal portion of prosternum, apical 2/3 of elytra, beginning at stria 1 and extending almost to lateral margins ; the following piceous— clypeus, mandibles, submentum, and median portion of abdominal sternites ; the following rufous — labrum, lateral margins of pronotum, apical portion of prosternum, and proepimera ; the following rufescent — antennae, lateral and ventral sclerites of pterothorax, scutellum, tibiae and tarsi ; the following testaceous — coxae, trochanters, and femora ; elytra, excluding the black portions, orange-testaceous. Microsculpture approximately isodiametric on head and pronotum, surfaces shining; transverse on elytra, the lines very close together, and surface iridescent.
Head 1.50 times wider than long, frontal impressions somewhat deeper than in B. neopulchellus; clypeus declivous, seta on left side in a narrow, ovate pit, that on right side arising from a more or less triangular depression ; lobes of labrum decidedly divergent. Penultimate setment of maxillary palpus subequal to terminal segment. Eyes prominent, convex.
Pronotum as in fig. 124; disc broadly convex, medially flattened, laterally moderately declivous, sloping evenly and slightly downward posterio-medially, more abruptly so posterio-laterally to form posterio-lateral depressions ; median longitudinal impression moderately deep, extending almost to anterior margin, ending far short of posterior margin ; posterio-lateral impressions separated from lateral grooves by a very broadly and feebly elevated ridge, the impressions elongate, shallow basins.
Male genitalia as in figs. 149a-c.