Adoretus decellei, 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 decellei sp. nov.

( Figs 15­ 16 , 64­ 65 )

TYPE MATERIAL EXAMINED: Holotype ♂: Ivory Coast: [Coll. P. Limbourg, R.C.I., Sassandra, 01.III.1998, Leg. P. Moretto] [Coll. I.R.Sc.N.B., Don P. Limbourg, I. G. 31706] ( RBINS).

Paratypes: 3♂, 2♀: [Coll. Mus. Tervuren, Côte d’Ivoire: Bingerville , VI.1962, J. Decelle] ( MRAC; 1♂, 1♀: RBINS) ; 1♂: [Coll. Mus. Tervuren, Côte d’Ivoire: Bingerville , XII.1962, J. Decelle] ( MRAC) ; 1♀: [Coll. Mus. Tervuren, Côte d’Ivoire: Bingerville , XII.1963, J. Decelle] ( MRAC) ; 1♂: [Coll. Mus. Tervuren, Côte d’Ivoire: Bingerville , V.1964, J. Decelle] ( MRAC) ; 1♀: [Coll. Mus. Tervuren, Ghana: Takoradl, IV / XI.1967, Leg. Besnard, ex. coll. Breuning] ( MRAC) ; 1♂: [Coll. I.R.Sc. N.B., Ivory Coast, Lamto N.R., Center of N. R., savanne brulée, net sweeping, 22.IX.2013, Leg. W. Dekoninck & T. Delsinne, GTI Ant Course 2013, I. G. 32.505] ( RBINS) ; 1♂, 1♀: [Coll. I.R.Sc. N.B., Ivory Coast, Lamto N.R., Center of N. R., Malaise trap (station), 15­ 22.IX.2013, Leg. W. Dekoninck & T. Delsinne, GTI Ant Course 2013, I.G.: 32.505] ( RBINS) .

DESCRIPTION.

♂: length: 10 mm, breadth: 4.5 – 5 mm; ratio LB/lB (n = 5): 1.75 – 1.87.

Laterally slightly convex, relatively elongate, dorsally flat, broader in middle of elytra; totally brownish except antennae yellowish, head and legs reddish.

Head (eye to eye) broad; clypeus rounded, margin totally reflexed; head covered with tubercles.

Antennae 10­ segmented, with club longer than funicle.

Pronotum rectangular, broader than long; ratio LP/lP (n = 5): 0.40 – 0.50; sides regularly rounded from base to apex, with all margins carinate; anterior angles slightly projecting and reaching posterior margin of eyes.

Apex of scutellum rounded, punctate.

Elytra longer than broad; ratio LE/lE (n = 5): 1.44 – 1.51; epipleura complete; costae slightly elevated; intervals strongly punctate; apex of elytra verniculate.

Humeral and apical calli marked.

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

Abdomen concave; process at base of prosternum rounded.

Protibia tridentate, pro­ and mesotarsal larger claw cleft; metatarsus with larger claw half longer than outer one.

Dorsum covered with short, white, decumbent scales; lines of long isolated erected white setae and little glabrous area on elytra; tuft of white scales on top of humeral calli; apex of elytra nearly glabrous; ventrum covered with longer, white, decumbent scales (longer on mesosternum); long, isolated, erected white setae on sternites; white erected setae on pygidium, longer on disc; long and short setae on legs.

Aedeagus: parameres short and broad, laterally sinuate and bidentate to apex (dorsal view); strongly ventrally curved (lateral view).

♀: length: 9.5 – 10.5 mm, width: 5 mm.

Differs from ♂ by: antennae slightly shorter, elytra and abdomen convex.

DERIVATIO NOMINIS. Dedicated to the late J. Decelle who collected most of specimens studied.

Figures

Figs 15­ 16. Adoretus decellei holotype. (15) aedeagus, lateral view; (16) parameres, dorsal view. Figs 17­ 18. Adoretus adustus. (17) aedeagus, lateral view; (18) parameres, dorsal view. Figs 19­ 20. Adoretus bredoiholotype. (19) aedeagus, lateral view; (20) parameres, dorsal view.

Figs 64­ 65.Adoretus decellei holotype. (64) habitus, dorsal view (photo A. Pauly); (65) apex of elytra. Figs 66­ 67. Adoretus adustus. (66) habitus, dorsal view; (67) apex of elytra.