Afroeudesis (s. str.) bururwa Jałoszyński, 2025

Afroeudesis (s. str.) bururwa Jałoszyński , sp. nov.

( Figs 1–5 View FIGURES 1–4 View FIGURE 5 )

Type material studied. Holotype ( Burundi): ♂, two labels: “ Afrika / Burundi / Muramvya / 10 km NE Bugarama / 27.2.1985 / leg. Brachat /Mühle” [white, printed], „ AFROEUDESIS (s. str.) \ bururwa m. \ P. Jałoszyński, 2025 \ HOLOTYPUS “ [red, printed] ( MNHW) . Paratypes (2 exx.): 1 ♂, “AFRIKA / Rwanda / Cyangugu / Urw. v. Nyakabuye / 1700-1900m / 9.1.1986 leg. H. Mühle ” [white, printed] ; 1 ♂, “AFRIKA/Rwanda / Bez. Cyangugu / Urw. v. Nyakabuye / 1700-1900m / 14.- 27.2.1985 / leg. V. u. C. Brachat ” [white, printed] . Paratypes with yellow “ PARATYPUS ” labels, deposited in cPJ.

Diagnosis. Male: EW/HW <1.5; PL/PW> 1.2; pronotum weakly constricted in sub-basal region, at base about as wide as near middle; aedeagus in ventral view with subtriangular apex and strongly elongate ventral plate rapidly narrowing in subapical region, and with weakly sclerotized strongly elongate endophallic structure.

Description. Body of male ( Fig. 1 View FIGURES 1–4 ) light brown, setae yellowish; BL 0.76–0.80 mm. Head broadest across eyes, HL 0.15 mm, HW 0.21–0.23 mm; tempora in dorsal view vestigial; frontovertexal region with elongate median ‘platform’ moderately impressed and covered with fine scale-like microsculpture; lateral portions of vertexal region outside platform weakly convex; supraantennal tubercles distinctly elevated; eyes conspicuously large, strongly convex and coarsely faceted. Punctures on dorsum inconspicuous; setae short, sparse and suberect. Antenna slender but short in relation to body length, AnL 0.28–0.30 mm, antennomere 1 about as long as broad, 2 distinctly elongate, 3 and 4 each about as long as broad, 5 and 6 each weakly elongate, 7 about as long as broad, 8–10 each weakly transverse, 11 much shorter than 9 and 10 combined, about 1.3 times as long as broad.

Pronotum distinctly elongate, almost equally broad near base and near middle; PL 0.21–0.23 mm, PW 0.15–0.18 mm. Anterior margin weakly rounded, anterior corners poorly marked, obtuse-angled and blunt, lateral margins rounded in anterior half and weakly constricted in sub-basal region, posterior corners obtuse-angled and blunt, posterior margin nearly straight. Antebasal groove sharply marked and connecting pair of small lateral pits. Disc with fine, inconspicuous punctures; setae short, sparse and suberect.

Elytra together oval, broadest near middle; EL 0.40–0.43 mm, EW 0.25–0.30 mm, EI 1.1.42–1.60; humeral calli distinct, elongate and mesally demarcated by shallow impressions, lateral margins evenly rounded, apices rounded together. Punctures and setae as those on pronotal disc.

Hind wings functional.

Legs short, lacking peculiar modifications.

Aedeagus ( Figs 2–4 View FIGURES 1–4 ) weakly elongate, AeL 0.10 mm; in ventral view broadest near proximal third, narrowing distad and with subtriangular apex; ventral plate strongly elongate and rapidly narrowed in subapical region; endophallus with asymmetrical, weakly sclerotized and strongly elongate tubular structure; parameres relatively short, each with one robust apical seta.

Female. Unknown.

Distribution. Burundi ( Muramvya Province) and Rwanda ( Southern Province, Muhanga District).

Etymology. The noun in apposition bururwa is a combination of first syllables of Burundi and Rwanda.

Remarks. Males of Afrotropical species of Afroeudesis are very similar to each other. Afroeudesis trianguliceps belongs in the subgenus Eburneus Jałoszyński, 2016 , so it can be distinguished from A. bururwa and A. basilewskyi by subgeneric features: mandibles apically broadened dorso-ventrally; hypostomal sulci reaching posterior tentorial pits; complete hypomeral ridges; narrowly triangular anterior metaventral process; lateral metaventral carinae present; and two characters observable in dorsal view: mesoscutellar shield not visible between elytral bases; and pronotal transverse antebasal groove with an additional median pit. Afroeudesis bururwa and A. basilewskyi belong in the nominotypical subgenus and among other characters have the mesoscutellar shield exposed and the transverse antebasal groove lacking the median pit. These two species can be distinguished by the following features: the pronotum strongly constricted in its sub-basal region in A. basilewskyi vs. weakly so in A. bururwa ; the head in A. basilewskyi distinctly narrower in relation to elytra (EW/HW 1.83) than in A. bururwa (EW/HW 1.11–1.33); the pronotal index in A. basilewskyi smaller (PL/PW 1.14) than in A. bururwa (PL/PW 1.21–1.50); the aedeagus in ventral view in A. basilewskyi with a truncate apex vs. with subtriangular apex in A. bururwa .

Slight differences in the shape of the median lobe and endophallus found in the three available specimens ( Figs 2–4 View FIGURES 1–4 ) are interpreted as intraspecific variability or/and artifacts of preparation of delicate and weakly sclerotized aedeagus that is prone to distortions. No differences in external characters between the three specimens were found.