Cephennomicrus inflatus, Jałoszyński, Paweł, 2009

Jałoszyński, Paweł, 2009, Cephennomicrus Reitter (Coleoptera, Staphylinidae, Scydmaeninae) of Japan and Taiwan: taxonomic notes, ten new species and comparative morphology of nomurai and taiwanensis species groups, Zootaxa 2145, pp. 1-35 : 5-7

Cephennomicrus inflatus sp. n.

( Figs. 3 , 6, 7 , 12 )

Type material. Holotype: TAIWAN: 3, " 10.IV.2007, leg. S. Vit, Rd. no. 23, km 14.5, Hualien Co., TAIWAN merid., mount. frst. litter (alt. ± 700 m.)" (white, printed), "No 12 2 ex." (handwritten in pencil on reverse) ( PCSV).

Diagnosis. Aedeagus with slightly asymmetrical subapical group of sclerites, the longest sclerites are very broad with blunt apices; apex of each paramere very strongly, rapidly broadened.

Description. BL 1.05. Body of male ( Fig. 3 ) relatively light brown, covered with yellowish vestiture.

Head large, HL 0.15, HW 0.26; non-modified posterior part of vertex very short, convex; median part of head occupied by large, elongate pentagonal protuberance nearly as broad as 1/3 of width of vertex, protuberance is divided by transverse groove into smaller, inversely triangular posterior part and much larger and broader hexagonal anterior part, median protuberance is surrounded at each side by deep impression connected with upper margin of each eye by groove, additionally sides of frons adjacent to broadest place of median convexity are impressed. Supraantennal tubercles surrounded by impressed areas, so that they appear strongly raised. Eyes very large, coarsely faceted and strongly convex. Punctation indistinct; setae short, moderately dense, recumbent to suberect. Antennae long and very slender, with very indistinctly separated 3- segmented club, AnL 0.52, antennomere I large, slightly flattened dorso-ventrally, about 1.5x as long as broad at base; II much narrower and slightly shorter than I, about 1.6x as long as broad; III–IV equal in length and width, much narrower than II, each about 1.3x as long as broad; V–VI as narrow as III–IV but each slightly longer, about 1.6x as long as broad; VII slightly longer and broader than VI, about 1.5x as long as broad; VIII slightly shorter and minimally (barely noticeably) narrower than VII, about 1.3x as long as broad; IX longer and broader than VIII, about 1.6x as long as broad; X broader and longer than IX, about 1.4x as long as broad; XI slightly broader and much longer than X, about 2.2x as long as broad.

Pronotum subquadrate in shape, broadest near anterior third, PL 0.30, PW 0.36; anterior margin broadly, weakly rounded; sides strongly rounded in anterior third, slightly constricted just posterior to middle, slightly but distinctly convergent toward blunt and obtuse hind angles; posterior margin nearly straight; base of pronotum with shallow and indistinct transverse groove connecting pair of small but distinct lateral pits, additionally small pit is located near each hind angle; median longitudinal groove very narrow, running from transverse groove nearly up to anterior margin of pronotum. Punctation of disc very fine, relatively dense, punctures are very small and hardly discernable under magnification 40x; setation dense and relatively long, slightly suberect.

Elytra oval and elongate, broadest anterior to middle, EL 0.60, EW 0.50, EI 1.20; basal pit on each elytron small but distinct; humeral calli well marked; apices of elytra separately rounded. Punctation and setation similar to those on pronotum. Hind wings well developed.

Legs slender and long, pro- and metatibiae straight, mesotibiae slightly recurved.

Metaventrite very weakly impressed in its posterior part between coxae.

Aedeagus ( Figs. 6, 7 , 12 ) drop-shaped with broad and rounded base, AeL 0.25; in ventral view apex of ventral wall blunt, apex of dorsal wall protruded, narrow and tapered; in lateral view apex of dorsal wall slightly curved ventrally; internal structures ( Fig. 12 ) located in apical half of median lobe, composed of pair of long and broad sclerites with blunt apices accompanied at external sides by pair of similar, but shorter, narrower sclerites with pointed apices, slightly asymmetrical median funnel-like structure is located between sclerites. Parameres long, exceeding apex of median lobe, with strongly expanded apices, each with two moderately long and one short subapically located setae.

Female unknown.

Distribution. Central-Eastern Taiwan, Hualien County.

Etymology. The name refers to strongly broadened apices of the parameres.

Remarks. This species is extremely similar to C. nomurai , C. disjuntus and C. crucifer ; discrimination between them is possible only on the basis of distinctly different aedeagi. The modifications of the head in C. inflatus , difficult to describe due to their complexity, are very similar to those illustrated for C. disjunctus by Jałoszyñski et al. (2004).

Figures

FIGURES 1 – 5. Dorsal view of Cephennomicrus (male holotypes). 1, C. nomurai (Jałoszyński & Hoshina). 2, C. disjunctus (Jałoszyński, S. Arai & K. Arai). 3, C. inflatus Jałoszyński. 4, C. crucifer Jałoszyński. 5, C. hobbiti (Jałoszyński & Hoshina). Scale bars: 0.2 mm.

FIGURES 6 – 9. Aedeagus of Cephennomicrus in ventral (6, 8) and lateral (7, 9) views. 6, 7, C. inflatus Jałoszyński. 8, 9, C. crucifer Jałoszyński. Scale bars: 0.1 mm.

FIGURES 10 – 14. Internal sac of aedeagus of Cephennomicrus in ventral view. 10, C. nomurai (Jałoszyński & Hoshina). 11, C. disjunctus (Jałoszyński, S. Arai & K. Arai). 12, C. inflatus Jałoszyński. 13, C. crucifer Jałoszyński. 14, C. hobbiti (Jałoszyński & Hoshina). Scale bars: 0.05 mm.