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:5138595E-C64C-4C4A-9813-D0A8AB96EA56

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.