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

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

( Figs 38–44 View FIGURES 38–44 )

Type material. Holotype: CHINA (YUNNAN Prov.): ♂, two labels: “CHINA: Yunnan, Nujiang Lisu Pref., / Gaoligong Shan, “ Cloud pass”, / 21 km NW Liuku, 25º58’11’’N, / 98º41’01’’E, 3150 m, shrubs & / bamboo, litter sifted, 3.IX.2009, / leg. M. Schülke [ CH09-22 a]” [white, printed]; “ CEPHENNODES (s. str.) / cavatus m. / P. Jałoszyński, 2025 / HOLOTYPUS ” [red, printed] ( MNB) GoogleMaps . Paratypes (12 exx.): 3 ♀♀, same data as for holotype GoogleMaps ; 1 ♂, “CHINA: Yunnan , Nujiang Lisu Pref. , / Gaoligong Shan, “ Cloud pass” 3150 m / 21 km NW Liuku (shrubs, / Vaccinium , bamboo, litter sifted) / 25º58’21’’N, 98º41’01’’E / 2.IX.2009 D.W.Wrase [22A]” [white, printed] GoogleMaps ; 1 ♂, “CHINA: Yunnan [ CH07-27 ], Nujiang / Lisu Aut. Pref., Gaoligong Shan, creek / valley 20 km NW Liuku, 25º58’49’’N, / 98º41’48’’E, 3000 m, bamboo, shrubs, / litter sifted, 9. VI.2007, M. Schülke ” [white, printed] GoogleMaps ; 2 ♂♂, 5 ♀♀, “CHINA: Yunnan , Nujiang Lisu Pref. , / Gaoligong Shan, “ Cloud pass”, / 21 km NW Liuku, 3150 m, / 25º58’21’’N, / 98º41’01’’E, / shrubs & bamboo, litter sifted, / 2.IX.2009, leg. M. Schülke [ CH09-22 ]” [white, printed]; all paratypes with yellow “ PARATYPUS ” label ( MNB, cPJ) GoogleMaps .

Diagnosis. Body moderately large, slightly over 1.5 mm in length; antennae with pentamerous clubs; punctures on head, pronotum and elytra equally fine and inconspicuous; pronotal lateral carinae single; subhumeral lines short, as long as 0.25 × EL. Male: antennomere 7 enlarged, longer and thicker than 8; apex of each elytron with oval asetose cavity ( Fig. 39 View FIGURES 38–44 ); aedeagus ( Figs 40–43 View FIGURES 38–44 ) with pair of rounded distolateral lobes on capsular region; each paramere with lateral subapical process ( Fig. 44 View FIGURES 38–44 ).

Description. Body of male ( Fig. 38 View FIGURES 38–44 ) strongly convex, oval, with shallow but distinct constriction between pronotum and elytra, umbra brown with slightly darker pronotum and lighter tarsi, covered with light brown setae. BL 1.55–1.66 mm.

Head broadest across moderately large and moderately strongly convex, coarsely faceted eyes, HL 0.21–0.25 mm, HW 0.38 mm; frontovertexal region weakly convex at middle, unmodified; supraantennal tubercles weakly elevated. Punctures on frontovertexal area fine and inconspicuous; setae sparse, short and suberect. Antennae long and slender, with pentamerous clubs, AnL 0.95–1.00 mm, antennomere 1 about as long as broad, 2 and 3 each distinctly elongate, 4 indistinctly elongate, 5 and 6 each distinctly elongate, 7 enlarged, elongate and slightly broader than 8, 8 slightly transverse, 9 and 10 each about as long as broad, 11 nearly as long as 9 and 10 combined, about 1.8 × as long as broad.

Pronotum semi-oval, strongly convex at middle and weakly flattened near hind corners, broadest near middle but barely discernibly narrowing posterad; PL 0.48–0.50 mm, PW 0.65–0.70 mm. Anterior margin in strictly dorsal view nearly straight; lateral margins strongly rounded in anterior half and nearly straight posteriorly, microserration extremely fine and barely discernible; posterior corners nearly right-angled; posterior margin shallowly bisinuate; lateral marginal carinae simple (i.e., not doubled); lateral antebasal pits shallow but distinct, each distinctly closer to posterior than lateral pronotal margin. Punctures on pronotal disc fine and inconspicuous; setae short and moderately dense, weakly suberect.

Elytra clearly broader than pronotum, together oval, broadest near anterior third; EL 0.83–0.95 mm, EW 0.75– 0.80 mm, EI 1.06–1.19; subhumeral lines carinate but blunt, as long as 0.25 × EL and weakly divergent posterad, mesally accentuated by short basal impression; basal elytral fovea on each elytron located distinctly closer to lateral margin of mesoscutellum than to subhumeral line and situated in large oval impression extending posterad; elytral apices ( Fig. 39 View FIGURES 38–44 ) modified, separately rounded, each with oval asetose and impunctate impression. Punctures on elytra fine, unremarkable; setae similar to those on pronotum, setae surrounding apical impressions slightly longer than on remaining surface.

Hind wings functional.

Metaventrite with indistinct lateral impressions.

Legs long and slender, unmodified.

Aedeagus ( Figs 40–44 View FIGURES 38–44 ) of modified latus form, AeL 0.35 mm; capsular region in ventral view oval, with pair of small and rounded distolateral lobes; apical projections subtriangular and about as long as broad, in ventral view distal (dorsal) plate with narrow and curved apical region, in lateral view distal plate weakly curved; parameres short and thick, each with modified apical region, in lateral view ( Fig. 44 View FIGURES 38–44 ) with elongate lateral subapical process, each paramere with two similarly long apical setae.

Female. Externally similar to male but lacking apical elytral modifications and with shorter antennae in relation to BL, wingless; BL 1.55–1.58 mm; HL 0.23 mm, HW 0.38 mm, AnL 0.73–0.75 mm; PL 0.45–0.48 mm, PW 0.68–0.70 mm; EL 0.85–0.88 mm, EW 0.75–0.78 mm, EI 1.13–1.17.

Distribution. S China: Yunnan.

Etymology. The adjective cavatus refers to the apical elytral cavities.

Remarks. Cephennodes cavatus belongs to a group of species with a lateral finger-like process in the subapical region of each paramere ( Fig. 44 View FIGURES 38–44 ). This unusual character is shared with C. superlatus (which differs in recurved metatibiae and much more extensive elytral modifications, comprising not only large apical impressed and concave apical regions, but also large lateral patches of modified setae), C. excavatus (which has the lateral subapical parameral process shifted more proximad and directed distad, a slenderer body, and the apical elytral impressions facing dorsad), C. spinosus (which has a conspicuous mucro on the sternite VI, submedially thickened protibiae, and curved metatibiae), C. curvitibia (which has a different shape of the parameral apices and strongly curved metatibiae), and C. rufus (which also has different shapes of parameral apices, with the subapical lateral process shifted proximad, and unmodified elytra).