Adoretus nathani, Limbourg, 2014

Limbourg, Pol, 2014, Contribution to the knowledge of Afrotropical Rutelinae III (Coleoptera, Scarabaeoidea, Melolonthidae), Belgian Journal of Entomology 17, pp. 1-33 : 1-33

Adoretus nathani sp. nov.

( Figs 28­ 29 , 72)

TYPE MATERIAL EXAMINED: Holotype ♂: [Coll. P. Limbourg, Kenya, Mombassa, 04.1994, Leg. P. Moretto] ( RBINS).

Paratypes: 1♂, 1♀: [ Kenya, Tiwi , 10.VI.(19)74, lgt. Hẚjkov ẚ] ( PCPL, PCJM) .

DESCRIPTION.

♂: length: 12.5 mm, breadth: 6.5 mm; ratio LB/lB (n = 2): 1.63 – 1.73.

Laterally convex, rather elongate, slightly bent, broader in middle of elytra; yellowish­brown with head, apical teeth of protibia, all margins and tarsi reddish brown.

Head (eye to eye) broad; clypeus rounded, entirely reflexed, totally covered with tubercles; vertex transversely striated.

Antennae 10­ segmented, with club longer than funicle.

Pronotum rectangular, broader than long; ratio LP/lP (n = 2): 0.46 – 0.50; sides regularly rounded from base to apex; all margins carinate, anterior angles slightly projecting and reaching posterior margin of eyes; transversely striated.

Scutellum subtriangular, punctate.

Elytra longer than broad; ratio LE/lE (n = 2): 1.32 – 1.35; epipleura complete; costae slightly elevated; intervals strongly punctate.

Humeral and apical calli marked.

Pygidium laterally rounded, carinate, not projecting postero­ventrally and not surpassing apex of elytra.

Abdomen concave; process at base of prosternum pointed.

Protibia tridentate, larger claw elongate, as long as last tarsomere, pro­and mesotarsal larger claw cleft; larger claw of metatarsus 3 times longer than outer one.

Upper and underside covered with short white, squamous, decumbent setae, erected on head and on sides of elytra; long erected yellowish setae from canthus to apex of elytra; longer erected white setae on disc of pygidium.

Aedeagus: parameres triangular, laterally slightly sinuate, strongly sclerified; strongly sinuate ventrally in lateral view.

♀: length: 13.5 mm, breadth: 7 mm.

Differs from ♂ by: larger; body more convex; club of antennae shorter; abdomen convex and by pygidium projecting postero­ventrally.

DERIVATIO NOMINIS. Dedicated to my son Nathan.

COMMENTS.

Comments are given under Adoretus rhamphomorius Ohaus, 1934

Figures

Figs 28­ 29. Adoretus nathaniholotype. (28) aedeagus, lateral view; (29) parameres, dorsal view. Figs 30­ 31. Adoretus rhamphomorius. (30) aedeagus, lateral view; (31) parameres, dorsal view. Figs 32­ 33. Adoretus matejicekiholotype. (32) aedeagus, lateral view; (33) parameres, dorsal view.