Adoretus ( Adoretus ) allardi, Limbourg & Dekoninck & Seidel, 2024

Limbourg, Pol, Dekoninck, Wouter & Seidel, Matthias, 2024, Contribution to the knowledge of Afrotropical Rutelinae VII (Coleoptera, Scarabaeidae, Rutelinae), Belgian Journal of Entomology 145, pp. 1-48 : 22-25

Adoretus ( Adoretus) allardi sp. nov.

urn:lsid:zoobank.org:act:

Fig. 11

TYPE MATERIAL.

REPUBLIC OF SOUTH AFRICA. Holotype ♂: [Coll. I.R.Sc.N.B., REPUBLIC OF SOUTH AFRICA, Kwazulu Natal, Shazibe env., XI.1982, Ex. Coll. V. Allard , IG.: 33167] ( RBINS); Paratypes: same collection data as for holotype: 1♂, 2♀♀: ( 1♀: RBINS; 1♂, 1♀: TMSA).

DESCRIPTION.

MALE. Measurements: length: 13–14.5 mm, width: 7 mm.

Body: laterally convex, elongate, slightly bent, broader in middle of elytra; abdomen concave; perpendicular process at base of prosternum pointed; yellowish-brown with head yellowish-brown to reddish-brown; all margins, tarsi and spines on outer sides of legs reddish-brown; teeth of protibiae, apex of upper lip, apex of mandibles blackish; slightly shiny.

Head: broad; clypeus rounded, entirely reflexed, totally covered with tubercles; vertex with isolated tubercles; antennae with 10 antennomeres, with club slightly longer than funicle.

Thorax: pronotum rectangular, wider than long; sides uniformly rounded from base to apex; all margins with complete marginal line; anterior angles projecting and reaching posterior margin of eyes; with shallow, horseshoe-shaped punctures, almost coalescent on sides; scutellar shield subobtuse, with rounded apex, with shallow, horseshoe-shaped punctures.

Elytra: longer than wide; epipleura complete; primary costae slightly more convex than interstices; all secondary striae irregularly punctate with horseshoe-shaped punctures; striae formed by a line of close small, horseshoe-shaped punctures; humeral and apical calli slightly marked.

Pygidium: triangular, apex rounded, marginated along anal plate, imbricate-punctate; not projecting postero-ventrally and not surpassing apex of elytra.

Venter: lateral part of metaventrite with large transversal crescent punctures, middle part almost smooth; lateral part of abdominal ventrites imbricate-punctate, middle part almost smooth.

Legs: protibiae tridentate and relatively slender, inner claw elongate and cleft, slightly shorter than last tarsomere, mesotarsal outer claw cleft, longer than last tarsomere; outer claw of metatarsus one third longer than inner and uncleft.

Setation: dorsal side covered with relatively close, short, white, squamous decumbent setae; long, widely spaced, erected yellowish setae from lateral margins of pronotum to median part of elytra, on antennae and on canthus, close to declivity of elytra; underside with short, white, squamous decumbent setae on metaventrite and abdominal ventrites; lines of long, erected, brownish-yellow setae inserted in setigerous punctures on abdominal ventrites; close, long, decumbent yellowish-brown setae along anterior and posterior margins of prosternum; long, whitish, erected setae on disc of pygidium; longer, erected, yellowish-brown setae on base of labium; outer sides of tibiae with short, white, squamous decumbent setae; inner sides with erected, brownish-yellow setae and long, erected brownish-yellow setae inserted in setigerous punctures on margin.

Aedeagus: in lateral view, parameres elongate and ventrally straight, upwards curved in the third part, dorsally sinuate; in dorsal view, lateral margins of parameres almost parallel, apex spatulate and slightly sinuate in the middle.

FEMALE: Measurements: length: 14 mm, width: 7–7.5 mm.

Differs from ♂ by: laterally more convex and abdomen convex; antennae with club shorter; pygidium slightly projecting postero-ventrally and not surpassing apex of elytra; protibiae narrower with apical teeth wider and longer.

DERIVATIO NOMINIS.

Dedicated to the late Belgian entomologist Vincent Allard (1921-1994), specialist of Afrotropical Cetoniinae.

DISTRIBUTION.

Known from the Republic of South Africa.

BIOLOGY.

The species was collected in the month of November.

DIFFERENTIAL DIAGNOSIS.

Adoretus ( Adoretus) allardi sp. nov. is similar to A. ictericus Burmeister, 1844 but can be distinguished as follows:

A. ( Adoretus) allardi sp. nov. ( Fig. 11 )

Aedeagus: in lateral view, parameres elongate and ventrally straight, upwards curved in the third part, dorsally sinuate; in dorsal view, lateral margins of parameres almost parallel, apex spatulate and slightly sinuate in the middle.

Hairs: close long erected yellowish setae along declivity of elytra.

A. ictericus Burmeister, 1844 ( Figs 11–12 )

Aedeagus: in lateral view, parameres more elongate and ventrally curved; in dorsal view, subtriangular elongated shaped, apex strongly sinuate in the middle.

Hairs: long widely spaced erected yellowish setae along elytra.

Figures

Fig. 11. Adoretus (Adoretus) allardi sp. nov. Holotype ♂ (RBINS). A-B, habitus. A, dorsal view. B, lateral view. Paratype ♀ (RBINS). C-D, habitus. C, dorsal view. D, lateral view. E-F, aedeagus. E, lateral view. F, dorsal view. G, distribution map of Adoretus (Adoretus) allardi sp. nov. and Adoretus (Adoretus) ictericus Burmeister, 1844.