Contribution to the knowledge of Afrotropical Rutelinae VI (Coleoptera, Scarabaeidae, Rutelinae) Author Limbourg, Pol text Belgian Journal of Entomology 1844 80 1 41 journal article 10.5281/zenodo.13270807 2295-0214 13270807 Adoretus calvusoides sp. nov. urn:lsid:zoobank.org:act: 9A5B2963-79DA-4E2C-AB72-8D7BA0C67747 ( Figs 31–37 ) TYPE MATERIAL . Holotype ♂ : [ KENYA , Eastern Mwingi , Nguni env., 28.XI.1999 , M. Snizek leg.] [ Coll.I.R.Sc.N.B. , don P. Limbourg , I.G.: 32.642] ( RBINS ). Paratypes : 3♂ , 5♀ : same data as holotype ( RBINS ) ; 2♂ , 7♀ : [ KENYA , Eastern Mwingi , Nguni env., 26.XI.1999 , M. Snizek lgt.] [ Coll.I.R.Sc. N.B., don P. Limbourg , I.G.: 32.642] ( RBINS ) ; 2♀ : [ KENYA , Eastern Kalulu-Kithioko , 27.XI.1999 , M. Snizek leg.] [ Coll.I.R.Sc.N.B. , don P. Limbourg , I.G.: 32.642] ( RBINS ) ; 3♂ , 17♀ : [ Coll.I.R.Sc. N.B., KENYA E., Mwingi , Nguni , 28.XI.1999 , Snizek lgt., I.G.: 31.411] ( 3♂ , 14♀ : RBINS ; 1♀ : BMNH ; 1♀ : MFNB ; 1♀ : MSPC ) ; 1♂ : [ Coll.I.R.Sc.N.B. , KENYA , Eastern , E 729, Sosoma , 202km E. of Thika , 20.IX.2007 , M. Snizek leg., I.G.: 31.208] ( RBINS ) ; 2♂ , 5♀ : [ Coll.I.R.Sc.N.B. , KENYA , Eastern , E. of Thika , Mwingi , Nguni , 29.IX.2007 , M. Snizek leg., I.G.: 31.208] ( RBINS ) ; 9♂ , 20♀ : [ Coll.I.R.Sc. N.B., KENYA , Coast E. , E. of Thika , Mwingi , Nguni , 29.XII.2007 , M. Snizek lgt., I.G.: 31.411] ( RBINS ) ; 1♂ : [ Coll.I.R.Sc. N.B., KENYA S.E. , Voi , S. Foot Sagala Mts. , 12.XII.2007 , M. Snizek leg., I.G.: 31.411] ( RBINS ) ; 1♀ : [ KENYA S.E. , Voi , 10.XII.1999 , M. Snizek lgt.] [ Coll.I.R.Sc. N.B., don P. Limbourg , I.G.: 32.642] ( RBINS ) ; 2♂ , 1♀ : [ KENYA S.E. , Kiboko env., 21.XI.1999 , M. Snizek leg.] [ Coll.I.R.Sc. N.B., don P. Limbourg , I.G.: 32.642] ( RBINS ) . DESCRIPTION : Male Measurements ♂ : length: 7–8 mm , width: 3.5–4 mm . 9 Body : Laterally convex, bent; totally yellow except, apex of femora and tibiae, tarsi and impressed point on lateral margins of pronotum, underside blackish; club of antennae and underside brownish-black, one male specimen totally black; shining without metallic reflection. Head : clypeus semicircular and totally reflexed, with, large, close, transversal, ovoid punctures, disc of vertex with large, close, deep rounded punctures, frons impunctate. Antennae with 9 antennomeres, with club slightly longer than funicle. Thorax : pronotum rectangular, wider than long; sinuate to posterior angle, sides slightly angular in middle; all margins carinate; anterior angles slightly projecting and not reaching posterior margin of eyes; with large, close, deep rounded punctures; scutellar shield subtriangular, slightly with small shallow isolated punctures. Elytra : longer than wide; epipleura complete; primary costae and intervals slightly convex; all secondary striae irregularly punctate, imbricate-punctate, almost coalescent; striae with a row of small and deep punctures, humeral calli and apical calli slightly marked. Pygidium : semicircular, carinate along anal plate, not projecting postero-ventrally and not surpassing apex of elytra, strongly punctate with close rounded punctures. Venter : upper part of metaventrite with rather close shallow horseshoe-shaped punctures, median part with small isolated rounded punctures; 2 nd to 5 th abdominal ventrites with isolated shallow horseshoe-shaped punctures, 6 th with imbricate puncture. Legs : protibiae tridentate, larger claw elongate, not ventrally sinuate, slightly shorter than last tarsomere; pro-and mesostarsal larger claw cleft; larger claw of metatarsus twice longer than smaller one and uncleft. Hairs : dorsal side with rare and isolated short white erected and decumbent squamous setae to apex of elytra, close on pygidium and on outer part of legs; longer erected yellowish separated setae inserted in setigerous punctures along margins of elytra from middle part to apex; yellowish setae on antennae, on canthus and on inner part of legs; underside with decumbent white squamous setae on abdominal ventrites, longer on metaventrite, close and decumbent on posterior margins of prosternum; long erected whitish setae on base of labium; long erected close yellowish setae inserted in setigerous punctures along carinate anal plate. Aedeagus : in lateral view, parameres rather short with apex narrowed, ventrally strongly sinuate, in basal part dorsally strongly excaved; in dorsal view, base triangular prolonged by a narrow process, apex notched on apico-internal angle. Female Measurements ♀ : length: 6.5–8.5 mm , width: 3.5–4 mm . Differs from ♂ by: larger; laterally more convex and abdomen convex; antennae with club as long as funicle; pygidium projecting postero-ventrally, surpassing apex of elytra; protibiae narrower and apical tooth rounded and longer. DERIVATIO NOMINIS . The name is formed from the suffix “ oides ” meaning “similar to” and “ calvus ”. It refers to the similarity with A. calvus Ohaus, 1913 . DISTRIBUTION . Known from Kenya . BIOLOGY . The species was collected in the months of September, November and December. DIFFERENTIAL DIAGNOSIS . Adoretus calvusoides sp. nov. is similar to A. calvus Ohaus, 1913 but can be distinguished as follows: 10 A. calvusoides sp. nov. A. calvus ( Figs 38–44 ). Aedeagus : in lateral view parameres rather short with Aedeagus : in lateral view parameres more elongate apex narrowed, ventrally strongly sinuate, in basal part with apex ventrally curved; in dorsal view, rather dorsally strongly excavated; in dorsal view, base rectangular with asymmetric sinuate sides; apex triangular prolonged by a narrow process, apex triangular notched on apico-internal angle ( Figs 42–43 ). ( Figs 35–36 ). ♂ , ♀ : overall yellow except apex of femora and tibiae, ♂ : rarely totally black; yellow with apical tooth of tarsi and impressed point on lateral margins of protobiae blackish; abdominal ventrites brownishpronotum blackish; club of antennae and ventral side black; ♀ : totally yellow. brownish-black.