Cephennodes (s. str.) glabrifrons, Jałoszyński, 2025

Cephennodes (s. str.) glabrifrons sp. nov.

( Figs 85–88 View FIGURES 81–88 )

Type material. Holotype: CHINA (YUNNAN Prov.): ♂, two labels: “CHINA: Yunnan [ CH07-35 ] Dali Bai / Auton. Pref., Wuliang Shan , 9 km SW / Weishan , 2450–2500 m, 25º10’14’’N, W / slope, 100º14’22’’E, oaks and pines, / sifted, 13.VI.2007, / M. Schülke ” [white, printed]; “ CEPHENNODES (s. str.) / glabrifrons m. / P. Jałoszyński, 2025 / HOLOTYPUS ” [red, printed] ( MNB) GoogleMaps . Paratypes (13 exx.): 4 ♂♂, 6 ♀♀, same data as for holotype GoogleMaps ; 1 ♂, “CHINA: Yunnan Dali Bai Auton. Pref., / Wuliang Shan , 11 km SW Weishan, / 25º08’46.7’’N, 100º14’14.1’’E, / 2520 m, pine forest, litter & / dead wood sifted, 14.IX.2009, / leg. M. Schülke [ CH09-52 ]” [white, printed] GoogleMaps ; 2 ♂♂, “CHINA: Yunnan [ CH07-35 ], / Dali Bai Auton. Pref., Wuliang / Shan, 9 km SW Weishan, 2450- / 2500 m, 25º10’14.7’’N, W slope. / 100º14’22’’E, oaks and pines, / sifted, 13.VI.2007, leg. A. Pütz ” [white, printed]. Each paratype with yellow “ PARATYPUS ” label ( MNB, cAP, cPJ) GoogleMaps .

Diagnosis. Body large, BL around 1.6–1.7 mm; antennae gradually thickened; punctures on clypeus, lateral areas of frontovertexal region, pronotum and elytra small but distinct and dense, those on pronotum more distinct than on elytra; pronotal lateral carinae single; subhumeral lines short, as long as 0.3 × EL. Male: head modified ( Fig. 86 View FIGURES 81–88 ), large elongate and rhomboidal median region of frontovertexal area asetose and impunctate, posteriorly flat and anteriorly slightly impressed, its anterior margin subtriangular and projecting anterad as short horn-like ridge, impunctate area with deep longitudinal median groove; aedeagus ( Figs 87–88 View FIGURES 81–88 ) strongly elongate, in ventral view with distal margin of capsular region asymmetrical and broadly subtriangular, distal plate short and strongly curved dorsad.

Description. Body of male ( Fig. 85 View FIGURES 81–88 ) strongly convex, oval, with very shallow constriction between pronotum and elytra, dark brown with slightly lighter tarsi, covered with light brown setae. BL 1.63–1.70 mm.

Head ( Fig. 86 View FIGURES 81–88 ) broadest across moderately large and moderately strongly convex, coarsely faceted eyes, HL 0.23–0.25 mm, HW 0.39–0.40 mm; frontovertexal region modified, with large elongate and rhomboidal median region asetose and impunctate, posteriorly flat and anteriorly slightly impressed, its anterior margin subtriangular and projecting anterad as short horn-like ridge; supraantennal tubercles weakly elevated. Punctures on clypeus and lateral areas of frontovertexal region small but sharply marked and dense, separated by spaces subequal to their diameters; setae on lateral areas sparse, long and suberect. Antennae long and slender, gradually thickened, AnL 0.85–0.93 mm, antennomere 1 about as long as broad, 2 weakly elongate, 3 weakly transverse, 4–6 each about as long as broad, 7 weakly elongate, 8–10 each about as long as broad, 11 as long as 9 and 10 combined, about twice as long as broad.

Pronotum semi-oval, moderately strongly convex at middle and flattened near hind corners, broadest near middle but barely discernibly narrowing posterad, so in some specimens it appears as equally wide between base and middle; PL 0.50–0.55 mm, PW 0.75–0.78 mm. Anterior margin in strictly dorsal view nearly straight; lateral margins strongly rounded in anterior half and nearly straight posteriorly, finely microserrate, posterior corners nearly right-angled; posterior margin shallowly bisinuate; lateral marginal carinae simple (i.e., not doubled); lateral antebasal pits shallow but distinct, each located much closer to posterior than to lateral pronotal margin. Punctures on median region of pronotal disc small but sharply marked, separated by spaces subequal to their diameters; punctures near anterior angles denser. Setae on pronotal disc long and moderately dense, suberect.

Elytra as wide as pronotum, together oval, broadest near anterior third; EL 0.83–0.90 mm, EW 0.75–0.78 mm, EI 1.10–1.17; subhumeral lines developed as sharp borders between elevated humerus and lower mesal region, as long as about 0.3 × EL and distinctly divergent posterad; basal elytral fovea on each elytron similarly distant from lateral margin of mesoscutellum and subhumeral line; elytral apices separately rounded. Punctures on elytra distinctly shallower and slightly sparser than those on pronotum but distinct; setae distinctly longer than those on pronotum, dense and erect.

Hind wings in some specimens functional, in others obliterated (but not in all specimens were the wings studied).

Metaventrite lacking lateral impressions.

Legs long and slender, unmodified.

Aedeagus ( Figs 87–88 View FIGURES 81–88 ) of modified simonis form, AeL 0.48 mm; capsular region of median lobe in ventral view strongly elongate, with distal margin asymmetrical and broadly subtriangular; dorsal apical projection (= distal plate) in ventral view short and tapering distad, in lateral view hook-shaped, curved dorsad at nearly right angle; parameres long and slender, not reaching apex of aedeagus, each with one long apical and two similarly long subapical setae.

Female. Externally similar to male, except for unmodified head and slightly shorter antennae in relation to BL; wingless; BL 1.58–1.68 mm; HL 0.23–0.25 mm, HW 0.39–0.43 mm, AnL 0.80–0.85; PL 0.50–0.58 mm, PW 0.75–0.83 mm; EL 0.85–0.88 mm, EW 0.75–0.80 mm, EI 1.06–1.17.

Distribution. S China: Yunnan.

Etymology. The adjective glabrifrons refers to the glabrous median area of the frontovertexal region in males.

Remarks. The head modifications in male composed of an elongate flat asetose and impunctate area divided medially by a groove and anteriorly projecting into a subtriangular process allow for unambiguous identification of C. glabrifrons .