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

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

( Figs 12–17 View FIGURES 12–24 )

Type material. Holotype: CHINA (YUNNAN Prov.): ♂, two labels: “CHINA: Yunnan [ CH07-22 ], / Nujiang Lisu Aut. Pref., / Gaoligong Shan, valley 21 km W / Gongshan , 27º47’03’’N, / 98º27’39’’E, 3320 m, moss / alder, bamboo, Rhodod., sifted, / 6.VI.2007, leg. A. Pütz ” [white, printed]; “ CEPHENNODES (s. str.) / curvitibia m. / P. Jałoszyński, 2025 / HOLOTYPUS ” [red, printed] (cAP). GoogleMaps

Diagnosis. Body small, around 1 mm in length; antennae with trimerous clubs; punctures on frontovertexal region of head stronger than on pronotum and elytra; pronotal lateral carinae single; subhumeral lines short, as long as 0.30 × EL. Male: metatibiae distinctly curved ( Fig. 12 View FIGURES 12–24 ), and elytral apices modified ( Fig. 13 View FIGURES 12–24 ): each apex with small asetose oval impression, and subapical region of elytral suture with row of setae directed posterolaterad; aedeagus ( Figs 14–15 View FIGURES 12–24 ) in ventral view with apical projections about as long as broad, in lateral view distal (dorsal) plate weakly curved, median lobe in ventral view with short and rounded lobe at each distolateral corner of capsular region; parameral apices strongly modified, in lateral view ( Fig. 17 View FIGURES 12–24 ) apex broadened and with elongate lateral subapical process, distal region microdentate.

Description. Body of male ( Fig. 12 View FIGURES 12–24 ) strongly convex, oval, with shallow but distinct constriction between pronotum and elytra, dark chestnut brown with slightly lighter tarsi, covered with light brown setae. BL 1.11 mm.

Head broadest across moderately large and moderately strongly convex, coarsely faceted eyes, HL 0.15 mm, HW 0.25 mm; frontovertexal region weakly convex at middle, unmodified; supraantennal tubercles weakly elevated. Punctures on frontovertexal area distinct, sharply marked and separated by spaces equal to or slightly narrower than their diameters; setae sparse, short and suberect. Antennae moderately long and moderately slender, with trimerous clubs, AnL 0.55 mm, antennomere 1 and 2 each distinctly elongate, 3 indistinctly elongate, 4 about as long as broad, 5 indistinctly elongate, 6 and 7 each about as long as broad, 8 distinctly transverse, 9 and 10 each weakly transverse, 11 about as long as 9 and 10 combined, nearly twice as long as broad.

Pronotum semi-oval, strongly convex at middle and weakly flattened near hind corners, broadest near middle; PL 0.34 mm, PW 0.48 mm. Anterior margin in strictly dorsal view nearly straight; lateral margins strongly rounded and finely, barely noticeably 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 nearly equally distant from posterior and lateral pronotal margin. Punctures on pronotal disc fine and inconspicuous; setae short and moderately dense, weakly suberect.

Elytra broader than pronotum, together oval, broadest slightly anterior to middle; EL 0.63 mm, EW 0.55 mm, EI 1.14; subhumeral lines developed as sharp borders between elevated humerus and lower mesal region, as long as 0.30 × EL and distinctly divergent posterad; basal elytral fovea on each elytron located slightly closer to lateral margin of mesoscutellum than to subhumeral line; elytral apices ( Fig. 13 View FIGURES 12–24 ) modified, separately rounded, each with small asetose oval impression, and subapical region of elytral suture with row of setae directed posterolaterad. Punctures on elytra fine, unremarkable; setae similar to those on pronotum.

Hind wings functional.

Metaventrite lacking lateral impressions.

Legs long and slender, modified: metatibiae strongly curved mesad.

Aedeagus ( Figs 14–17 View FIGURES 12–24 ) of modified latus form, AeL 0.25 mm; capsular region of median lobe in ventral view oval, with pair of short rounded distolateral lobes; apical projections subtriangular and about as long as broad, in lateral view distal (dorsal) plate weakly curved; parameres short and massif, each with strongly modified apex ( Figs 16–17 View FIGURES 12–24 ), bearing elongate lateral projection and with microdentate distal process, each paramere with two similarly long subapical setae.

Female. Unknown.

Distribution. S China: Yunnan.

Etymology. The noun in apposition curvitibia refers to the curved metatibiae in males.

Remarks. This is a remarkable species that can be easily identified based on the small body size, punctures on the head dorsum stronger than those on the pronotum and elytra, unmodified antennae, modified metatibiae and modified elytral apices; shapes of highly modified parameral apices are also unique for C. curvitibia .