Adoretus drumonti, Limbourg, 2016

Adoretus drumonti View in CoL sp. nov.

( Figs 53-54 View Figs 53-54 , 57-58)

TYPE MATERIAL. Holotype ♂: [ Coll. I.R.Sc.N.B., ZAMBIA N. W., 50km E. of Mwinilunga , 28.X.2008, I. G.: 31.208, Leg. M. Snizek] ( RBINS).

DESCRIPTION

Male

Measurements and ratios ♂ (n = 1): LB: 11.5 mm, lB: 6 mm; ratio LB/lB: 1.66; LP/lP: 0.49; LE/lE: 1.30.

Body: laterally convex, relatively elongate, slightly bent, broader in middle of elytra; abdomen concave; short process at base of prosternum rounded; pale reddish brown with vertex, frons and impressed point on lateral margins of pronotum blackish; clypeus, basal part of vertex and tarsi reddish, slightly shining.

Head: as broad as anterior margin of pronotum; eyes large; clypeus trapezoidal with anterior angles rounded, entirely reflexed; clypeus and vertex totally covered with tubercles; frons impunctate; antennae 10-segmented, with club longer than funicle.

Thorax: pronotum rectangular, broader than long; sides uniformly rounded from base to apex; all margins carinate, anterior angles slightly projecting and reaching posterior margin of eyes; transversely striated; scutellum triangular with rounded sides, transversely striated.

Elytra: longer than broad; epipleura complete; costae slightly elevated; intervals strongly striated transversely; striae obsolete except sutural one formed by a deep groove; humeral and apical calli slightly marked.

Pygidium: rounded, carinate along anal plate, not projecting postero-ventrally and not surpassing apex of elytra.

Legs: protibiae tridentate, larger claw elongate, as long as last tarsomere, 2 times longer than smaller; pro-and mesotarsal larger claw cleft; larger claw of metatarsus 3 times longer than smaller and uncleft.

Hairs: upper and underside covered with short white, squamous, decumbent setae, lateral margins of pronotum and elytra with long separated erected brownish setae, close on canthus; underside with sparse erected brownish setae inserted in setigerous points on sternites; femora with long erected brownish setae; longer erected brownish setae on disc of pygidium; apex glabrous.

Aedeagus: in lateral view, parameres short and perpendicular to median part, slightly sinuate dorsally; in dorsal view, lateral margins of parameres three times strongly sinuate, strongly concave to apico-internal angle; long setae on apico-internal angle.

Female. Unknown

DERIVATIO NOMINIS. Dedicated to my colleague Alain Drumont ( Bruxelles, Belgium).

DISTRIBUTION. Known from Zambia.

BIOLOGY. The species was collected in October.

DIAGNOSIS. A. drumonti sp. nov. is extremely similar to A. aurantiacus Benderitter, 1922 but can be distinguished as follows: