Cephennodes (Fusionodes) pseudolinguatus, Jałoszyński, 2025

Cephennodes (Fusionodes) pseudolinguatus sp. nov.

( Figs 230–235 View FIGURES 230–235 )

Type material. Holotype: CHINA (YUNNAN Prov.): ♂, two labels: “CHINA:Yunnan, Dali Bai Aut. Pref., / Zhemo Shan, 7 km SW Xiaguan , / 25º32-33’N, 100º10-11’E, 2870-2970 / m, scrub with bamboo, oaks & / Rhododendr., litter sifted, 18.IX. / 2009, leg. M. Schülke [ CH09-60 ]” [white, printed]; “ CEPHENNODES / ( FUSIONODES ) / pseudolinguatus m. / P. Jałoszyński, 2025 / HOLOTYPUS ” [red, printed] ( MNB) . Paratypes (3 exx.): 1 ♂, 2 ♀♀, same data as for holotype ( MNB, cPJ) .

Diagnosis. Body moderately small, BL around 1.2–1.3 mm; antennae moderately long with strongly thickened tetramerous clubs; punctures on median region of clypeus virtually absent, punctures on lateral regions of clypeus and on lateral regions of frontovertexal region small but sharply marked and separated by spaces shorter than their diameters, on median area of frontovertexal region only a few punctures, punctures on median region of pronotal disc similarly small as those on head but also sharply marked, separated by spaces subequal to their diameters, punctures on elytra fine and inconspicuous; subhumeral lines short, as long as 0.2 × EL. Male: aedeagus ( Figs 231–235 View FIGURES 230–235 ) in ventral view capsular region of median lobe with subtrapezoidal and strongly projecting distad distal margin, apex of apical projection deeply emarginate with narrow elongate median process between lateral halves, and parameres indiscernible, asetose.

Description. Body of male ( Fig. 230 View FIGURES 230–235 ) moderately strongly convex, oval, with distinct constriction between pronotum and elytra, dark brown with slightly lighter tarsi, covered with light brown setae. BL 1.25 mm.

Head broadest across large and moderately strongly convex, coarsely faceted eyes, HL 0.15–0.18 mm, HW 0.30 mm; frontovertexal region weakly convex at middle; supraantennal tubercles weakly elevated. Punctures on median region of clypeus virtually absent, punctures on lateral regions of clypeus and on lateral regions of frontovertexal region small but sharply marked and separated by spaces shorter than their diameters, on median area of frontovertexal region only a few punctures; setae short, sparse and suberect. Antennae moderately long with strongly thickened tetramerous clubs, AnL 0.55–0.60 mm, antennomere 1 about as long as broad, 2 weakly elongate, 3–5 each slightly transverse, 6 about as long as broad, 7 weakly transverse, 8–10 each weakly transverse, 11 about as long as 9 and 10 combined, about 1.7 × as broad.

Pronotum semi-oval, moderately strongly convex at middle and flattened near anterior and hind corners, broadest near middle and weakly narrowing posterad; PL 0.38–0.43 mm, PW 0.43–0.55 mm. Anterior margin in strictly dorsal view nearly straight; lateral margins strongly rounded in anterior third 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 slightly closer to lateral than to posterior pronotal margin. Punctures on median region of pronotal disc similarly small as those on head but also sharply marked, separated by spaces subequal to their diameters, punctures near anterior and posterior corners much denser and slightly coarse; setae short and moderately dense, suberect.

Elytra indistinctly wider than pronotum, together oval, broadest near anterior third; EL 0.68–0.70 mm, EW 0.55– 0.58 mm, EI 1.22–1.23; subhumeral lines developed as sharp borders between elevated humerus and lower mesal region, as long as 0.2 × EL and weakly divergent posterad; basal elytral fovea on each elytron nearly equidistant to lateral margin of mesoscutellum and subhumeral line; elytral apices separately rounded. Punctures on elytra fine and inconspicuous; setae similar to those on pronotum.

Both studied males wingless.

Metaventrite with lateral impressions nearly as long as half of its length.

Legs long and slender, unmodified.

Aedeagus ( Figs 231–235 View FIGURES 230–235 )AeL 0.43 mm; in ventral view with capsular region of median lobe with subtrapezoidal distal margin forming plate strongly projecting distad; subapical lateral lobes lacking; apex of apical projection deeply emarginate, slender median projection present between lateral halves; in lateral view apical projection broadening distad, subapical dorsal projection about as long as apical projection and narrowing distad; parameral apices indiscernible.

Female. Externally indistinguishable from male, wings not studied. BL 1.25–1.30 mm; HL 01.8 mm, HW 0.30 mm, AnL 0.55–0.60 mm; PL 0.40 mm, PW 0.55–0.58 mm; EL 0.68–0.73 mm, EW 0.55–0.58 mm, EI 1.23–1.26.

Distribution. S China: Yunnan.

Etymology. The adjective pseudolinguatus refers to the similarity of this species to C. linguatus .

Remarks. Cephennodes pseudolinguatus has the aedeagus showing some similarities to the copulatory organs of the C. hippopotamus , C. longilinguis and C. microphthalmus species groups. The parameral apices are indiscernible and asetose, like in the aedeagi of the C. longilinguis group, but the apical projection in ventral view is much larger than that in this group, and has an additional elongate median structure, a rod-like projection, lacking in the longilinguis group. In the C. hippopotamus and C. microphthalmus groups, the parameral apices are well developed and setose.

In the two studied males the aedeagus shows small differences in the shape of the apex of the capsular region and in the shape of the apical projection. However, these features, together with lack of any external differences, can be attributed to interspecific variability.