Cephennomicrus imago, 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 : 15-16

Cephennomicrus imago sp. n.

( Figs. 20 , 31, 32)

Type material. Holotype: TAIWAN: 3, " Taiwan, Nantou Hsien, Dehuashe, Tuch Hsiang, 8–11 IV 2004, F.I.T., Tomoyuki TSURU leg." (white, printed) ( NSMT).

Diagnosis. Body ca. 1 mm in length; frons, vertex and pronotal disc with very fine punctures; sides of pronotum weakly rounded, not constricted; lateral margin of each elytron with 3 long setae; aedeagus with long and broad central complex, median duct with one twist, basal loop present, median loop closed.

Description. BL 1.02. Body of male ( Fig. 20 ) stout, pigmentation moderately light brown, vestiture slightly lighter than body.

Head large, HL 0.12, HW 0.25; vertex and frons convex, rounded together; frontal glands about as small as single ommatidium, each located near internal anterior margin of eye; eyes large, coarsely faceted, moderately convex. Punctation on frons and vertex composed of very small, moderately dense, sharply marked punctures, distances between punctures on median part of vertex are as long as 2– 3 x puncture diameter; setae extremely short, sparse, nearly recumbent. Antennae slender, moderately long, AnL 0.42; antennomere I nearly twice as long as broad; II slightly narrower and shorter than I, twice as long as broad; III much narrower and shorter than II, about as long as broad; IV as narrow as III but slightly longer, 1.1x as long as broad; V as narrow as IV but much longer, 1.6x as long as broad; VI as narrow as V but shorter, 1.3x as long as broad; VII–VIII equal in width and length, each as narrow as VI but slightly longer, 1.4x as long as broad; IX slightly broader and much longer than VIII, twice as long as broad; X about as long as IX but much broader, about as long as broad; XI as broad as X but slightly longer, 1.2x as long as broad.

Pronotum subrectangular in shape, broadest near middle; PL 0.30, PW 0.39; anterior margin weakly rounded; entire lateral margins weakly but regularly rounded and very finely serrate; hind angles broadly obtuse and blunt; posterior margin with three very shallow emarginations; base of pronotum with four small but distinct pits forming two lateral pairs. Punctation of pronotal disc composed of very small and relatively dense punctures barely discernible under magnification 40x. Basic vestiture very short, moderately sparse, nearly recumbent; additionally pronotum bears three pairs of very long and strongly erect setae located on lateral margins near anterior third, in each hind angle, and in median part of posterior margin.

Elytra broadest slightly anterior to anterior third, EL 0.60, EW 0.50, EI 1.20. Each humeral callus is delimited from internal part of elytron by shallow and broad basal impression running posteriorly and toward lateral margin of elytron; apices of elytra separately rounded. Punctation similar to that on pronotum; vestiture slightly sparser than that on pronotum and composed of slightly shorter, nearly recumbent setae; additionally lateral margin of each elytron is provided with three long, strongly erect setae located near humerus, in broadest place and slightly anterior to posterior third. Hind wings well developed.

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

Metaventrite with extremely small median tubercle.

Aedeagus (Figs. 31, 32) relatively large, AeL 0.32; internal armature complicated, with long and broad central complex surrounding narrow median duct with one twist well visible in dorsal view; basal loop present, median loop closed; parameres with slender apices nearly reaching apex of median lobe, each bears 2–3 short setae.

Female unknown.

Distribution. Central Taiwan: Nantou County.

Etymology. The name reflexes a similarity of this species to other members of the group, after the Latin " imago ", a stem of " imitari " ("to copy, imitate"). The specific epithet is used here as a noun.

Figures

FIGURES 15 – 20. Dorsal view of Cephennomicrus (holotypes, males). 15, C. taiwanensis (Jałoszyński). 16, C. iriomotensis Jałoszyński. 17, C. nagoanus Jałoszyński. 18, C. tsurui Jałoszyński. 19, C. delicatissimus Jałoszyński. 20, C. imago Jałoszyński. Scale bars: 0.2 mm.