Cephennodes ( Fusionodes ) longicornis, Jałoszyński, 2025

Cephennodes ( Fusionodes) longicornis sp. nov.

( Figs 226–229 View FIGURES 222–229 )

Type material. Holotype: CHINA ( YUNNAN Prov.): ♂, two labels: “CHINA: Yunnan, Dali Bai Aut. Pref., / mount. range E Weishan, 12 km NE / Weishan, 25º17’02-15’’N, 100º22’ / 23-30’’E, 2630-2660 m, scrub with / pines and bamboo, litter sifted, 15.IX. / 2009, leg. M. Schülke [ CH09-54 ]” [white, printed]; “ CEPHENNODES / ( FUSIONODES ) / longicornis m. / P. Jałoszyński, 2025 / HOLOTYPUS ” [red, printed] ( MNB) . Paratypes (2 exx.): 2 ♂♂, same data as for holotype ( MNB, cPJ) .

Diagnosis. Body very large, BL around 1.9–2.0 mm; antennae long and slender, gradually thickened; punctures on median region of clypeus virtually absent, punctures on lateral regions of clypeus and on entire frontovertexal region moderately large, sharply marked and separated by spaces shorter than their diameters, punctures on median region of pronotal disc much smaller than 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 0.3 × EL. Male: aedeagus ( Figs 227–229 View FIGURES 222–229 ) in ventral view with capsular region of median lobe with strongly projecting distad subtriangular distal margin, apex of apical projection subtriangular and obtuse-angled, and parameres clearly projecting distad beyond capsular region.

Description. Body of male ( Fig. 226 View FIGURES 222–229 ) strongly convex, oval, with relatively deep constriction between pronotum and elytra, dark brown with slightly lighter tarsi, covered with light brown setae. BL 1.93–2.00 mm.

Head broadest across large and moderately strongly convex, coarsely faceted eyes, HL 0.25–0.28 mm, HW 0.43–0.44 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 entire frontovertexal region moderately large, sharply marked and separated by spaces shorter than their diameters; setae short, sparse and suberect.Antennae long and slender, gradually thickened, AnL 1.03–1.05 mm, antennomere 1 slightly elongate, 2 weakly elongate, 3–8 each about as long as broad, 9 and 10 each slightly elongate, 11 slightly shorter than 9 and 10 combined, about twice as long as broad.

Pronotum semi-oval, strongly convex at middle and flattened near anterior and hind corners, broadest slightly behind middle but indistinctly narrowing posterad; PL 0.60–0.63 mm, PW 0.88–0.90 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 nearly equidistant to posterior and lateral pronotal margin. Punctures on median region of pronotal disc much smaller than 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 1.03–1.10 mm, EW 0.93 mm, EI 1.11–1.19; subhumeral lines developed as sharp borders between elevated humerus and lower mesal region, as long as 0.3 × EL and weakly divergent posterad; basal elytral fovea on each elytron clearly closer to lateral margin of mesoscutellum than to subhumeral line; elytral apices separately rounded. Punctures on elytra fine and inconspicuous; setae similar to those on pronotum.

Hind wings functional.

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

Legs long and slender, unmodified.

Aedeagus ( Figs 227–229 View FIGURES 222–229 ) AeL 0.50 mm; in ventral view capsular region of median lobe with subtriangular and sharp-angled distal margin forming plate strongly projecting distad; subapical lateral lobes strongly projecting beyond lateral margins of capsular region; apex of apical projection broadly subtriangular, its lateral margins subtriangular, from base diverging distad and then equally strongly converging towards apex; in lateral view apical projection conspicuously massif, subtriangular and narrowing distad, subapical dorsal projection shorter than apical projection; parameral apices in ventral view projecting distad beyond capsular region, conspicuously long and thick, each with three short apical setae.

Female. Unknown.

Distribution. S China: Yunnan.

Etymology. The adjective longicornis refers to the long antennae.

Remarks. Cephennodes longicornis is a conspicuously large-bodied species (BL ~ 2 mm), with long and slender antennae, and can be easily identified by its unique aedeagus. Within the C. microphthalmus group, this is the only species with the subapical lateral lobes in ventral view strongly projecting laterally beyond lateral margins of the capsular region of median lobe, a strongly elongate, subtriangular apex of the capsular region, and the apical projection rhomboidal and slightly wider than long. Moreover, the parameral apices are conspicuously long and broad, and projecting distad beyond the apex of the capsular region of the aedeagus.

Species of Cephennodes ( Fusionodes) not placed in groups

After a reorganization of Cephennodes , only four previously described species of Fusionodes will remain not assigned (Jałoszyński, in prep.). Among them there are three species known to occur in China: