Adoretus mourgliai, 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 mourgliai sp. nov.

( Figs 29-30 , 33-34)

TYPE MATERIAL. Holotype ♂: [Coll. I.R.Sc.N.B., KENYA, Eastern, E. of Thika, Mwingi, Nguni, 29.XII.2007, Leg. M. Snizek, I.G. 31.208] ( RBINS).

Paratypes: 1♂: [Coll. Mus. Tervuren, Kénya: Meru-Nkubu , 1500m, 3.XI.1983, Leg. R. Mourglia] ( MRAC) ; 2♂: [ Kenya, S.E., Kiboko env., 21.11.1999, Mira Snizek lgt.] ( PCPL) .

DESCRIPTION

Male

Measurements and ratios ♂ (n = 4): LB: 12 – 12.5 mm, lB: 6 – 6.5 mm; ratio LB/lB: 1.69 (1.65 – 1.73); LP/lP: 0.45 (0.44 – 0.46); LE/lE: 1.35 (1.31 – 1.40).

Body: laterally convex, relatively elongate, slightly bent, broader in middle of elytra; abdomen concave; process at base of prosternum pointed; brownish-yellow with head, antennae, apical teeth of protibia, all margins and tarsi reddish-brown, slightly shining.

Head: broad; clypeus rounded, entirely reflexed, totally covered with tubercles; vertex transversely striated; 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 projecting and reaching posterior margin of eyes; separated rounded points; impressed point on lateral margins; scutellum triangular with rounded sides and shallow ovoid points.

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

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

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

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

Aedeagus: in lateral view, parameres straight; in dorsal view, lateral margins of parameres relatively parallel, laterally three times sinuate and strongly reduced to apex.

Female: unknown.

DERIVATIO NOMINIS. Dedicated to Ricardo Mourglia (Torino, Italy), specialist of Coleoptera Cerambycidae who collected one of the paratypes.

DISTRIBUTION. Known from Kenya.

BIOLOGY. The species was collected in the months November and December.

DIAGNOSIS. Adoretus mourgliai sp. nov. is extremely similar to A. nathanlimbourgi nom. nov. but can be distinguished as follows:

Figures

Figs 29-30. Adoretus mourgliai holotype habitus (12.5mm): (29), dorsal view; (30), lateral view. Figs 31-32. Adoretus nathanlimbourgi holotype habitus (12mm): (31), dorsal view; (32), lateral view. Figs 33-34. Adoretus mourgliai holotype: (33) aedeagus, lateral view; (34) parameres, dorsal view. Figs 35-36. Adoretus nathanlimbourgi holotype: (35) aedeagus, lateral view; (36) parameres, dorsal view.