Adoretus (Chaetadoretus) mckameyi, Limbourg, 2016

Limbourg, Pol, 2016, Contribution to the knowledge of Afrotropical Rutelinae IV (Coleoptera: Scarabaeoidea: Melolonthidae), Belgian Journal of Entomology 38, pp. 1-42 : 1-42

Adoretus (Chaetadoretus) mckameyi sp. nov.

( Figs 69-70, 73-74)

TYPE MATERIAL. Holotype ♂: [Coll. I.R.Sc.N.B., TANZANIA: Iringa, Mufindi Dist. Uzungwa Scarp For. Res. (8°31.58’S / 35°54’E), elev. 750m, 11.III.1996, UV 29-C5, McKamey et al. Canopy] [Coll. I.R.Sc.N.B., I.G.: 32.941] ( RBINS).

Paratype ♀: [Coll. I.R.Sc.N.B., TANZANIA: Iringa, Mufindi Dist. Uzungwa Scarp For. Res. (8°32.08’S / 35°52’E), elev. 1370m, 18.III.1996, UV 31-C4, McKamey et al. Canopy] [Coll. I.R.Sc.N.B., I.G.: 32.941] ( RBINS) .

DESCRIPTION

Male

Measurements and ratios ♂ (n = 1): LB: 11 mm, lB: 5 mm; LB/lB: 1.62; LP/lP: 0.36; LE/lE: 1.36.

Body: laterally convex, relatively elongate, slightly bent, broader in middle of elytra; abdomen concave; process at base of prosternum pointed; deep brown except antennae yellowish; shining with greenish metallic reflection.

Head: broad; clypeus rounded, entirely reflexed, totally covered with tubercles; vertex transversely striated; base of frons with elongate transversal points; antennae 9-segmented, with club as long as funicle.

Thorax: pronotum rather rectangular, strongly narrowed in the middle, broader than long; sides angular in middle; all margins carinate; anterior angles projecting and reaching posterior margin of eyes; separated crescent shaped points; deep median groove; impressed point on lateral margins; scutellum triangular; deep short rounded points.

Elytra: longer than broad; epipleura complete; costae slightly elevated; intervals with rounded points; striae formed by a line of close rounded points; humeral and apical calli slightly marked.

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

Legs: protibiae tridentate, apical tooth pointed; larger claw elongate, longer than last tarsomere; pro-and mesotarsal larger claw cleft; larger claw of metatarsus 1/3 times longer than smaller and uncleft.

Hairs: upper side covered with short white, squamous, decumbent setae and some long white erected flattened scales; canthus, anterior angles of pronotum and lateral margins of elytra with long, brown, separated erected setae; sternites and meso-and metafemora with short white, squamous decumbent or erected setae; close and longer on metasternum; pygidium with disc showing longer erected white setae and apex glabrous.

Aedeagus: in lateral view, parameres perpendicular; in dorsal view, parameres dorsally broader and short, apically strongly concave and divergents.

Female

Measurements and ratios ♀ (n = 1): LB: 11 mm, lB: 5.5 mm; LB/lB: 1.62; LP/lP: 0.34; LE/lE: 1.35.

Differs from ♂ by: eyes smaller, laterally more convex, abdomen convex and apical tooth of protibia rounded.

DERIVATIO NOMINIS. Dedicated to Dr. Stuart McKamey ( Smithsonian , Washington, USA), specialist of Homoptera: Membracidae who collected the specimens; according to the agreement with the Zoological Museum of Copenhagen ( ZMUC), the type material is deposed in RBINS .

DISTRIBUTION. Known from Tanzania.

BIOLOGY. The species was collected in April in the Uzungwa Scarp Forest Reserve (Udzungwa Mountains range), ranging from 400 to 1900 m a.s.l., covered by dense rainforest, mountain forest, miombo woodland, grassland and steppe.

DIAGNOSIS. A. (Chaetadoretus) mckameyi sp. nov. is an atypic species of Adoretini characterized by its greenish metallic reflection and its longitudinal median groove of pronotum and it is slightly similar to A. (Chaetadoretus) saetipennis Ohaus, 1914 but can be distinguished as follows:

A. (Chaetadoretus) mckameyi sp. nov. A. (Chaetadoretus) saetipennis Ohaus, 1914 Aedeagus: in lateral view, parameres perpendicular; in Aedeagus: in lateral view, parameres straight;

dorsal view, parameres dorsally broader and short, parameres dorsally longer and narrower, notched to apex strongly concave and divergent (Figs 73-74). apex, broader to the base (Figs 75-76).

Body: greenish metallic reflection. Body: without greenish metallic reflection.

Thorax: pronotum with a deep median groove. Thorax: pronotum without a deep median groove. Elytra: with some long white erected flattened scales. Elytra: with long decumbent white squamous setae.