Megalinus montanicus (Bordoni, 2003)

ZHOU, YU-LINGZI, BORDONI, ARNALDO & ZHOU, HONG-ZHANG, 2013, Taxonomy of the genus Megalinus Mulsant & Rey (Coleoptera: Staphylinidae, Xantholinini) and seven new species from China, Zootaxa 3727 (1), pp. 1-66 : 49

Megalinus montanicus (Bordoni, 2003)

(Fig. 15A–E; Fig. 15-1A–I)

Bordoni, 2003b: 260 ( Lepidophallus ; Type locality: China, S-Sichuan (Qinling Shan)); Bordoni, 2005a: 11 ( China, W-Hubei, S env. Nuyuping); Bordoni, 2007b: 70 (catalog; Sichuan, Shaanxi, Hubei); Bordoni, 2008: 58 ( Megalinus ; species list of Megalinus ); Bordoni, 2009b: 108 (Hubei, Henan).

Type material: male, with labels as follows: “ PARATYPUS, Lepidophallus , montanicus sp. n., Bordoni det. 2002” / “ CHINA: ' Shaanxi,' Qinling Shan , 6 km E Xunyangba, ' 1000–1300 m,' 23. V.-13. VI., '2000,' leg. C. Holzschuh ” ( NMW) .

Addtional materials: CHINA: Sichuan: Dujiangyan City: Puyang co.: Huaxicun village (E 103.7171, N 31.0547), 3 males, 5 females, 676 m, 12. V .2009, Zhou Yulingzi collected ( IZ-CAS); Liziping , one female, R . Dunda collected; Shangliang , one female, 24–29. V .2002, E. Kucera collected ( CJ) .

Description.

Male. Abdominal segment VIII entirely covered with setiferous punctures, except a narrow medial longitudinal impunctate band; posterior margins of tergite VIII medially protruding backwards, that of sternite VIII slightly protruding backwards (Fig. 15-1A, B). Tergite IX symmetrical, connected mediobasally. Sternite IX symmetrical, with slightly deflected mediobasal margin and obviously emarginated posterior margin (Fig. 15-1C). Tergite X symmetrical, with slightly rounded basal margin and emarginated posterior margin (Fig. 15-1D), in situ broadly exposed between tergite IX. Median lobe of aedeagus subspherical and medium sized (Fig. 15D, E; Fig. 15-1E, F), basal piece without transparent, membranous medial-longitudinal band; basal bulb 0.96 mm long, anterior portion cylindrical and long, 1/3 of basal bulb length. Parameres symmetrical and thin, slightly shorter than 1/2 of basal bulb length. Internal sac with symmetrical spines, apical 2/3 bearing medium sized spines, basal 1/3 with a larger paired spines.

Female. Posterior margin of tergite VIII and sternite VIII slightly arcuate backwards (Fig. 15G). Genital segment medium sized (Fig. 15-1H, I), 0.83 mm long, sternite with slightly bisinuate base, supplementary sclerites semicircle and medium sized, 0.38 mm long, overlapped 2/3 of basal margin of genital sternite.

Distribution. China (Sichuan, Hubei, Henan).

Remarks. This species could be distinguished from its congeners by: 1) dorsal surface distributed with round,

deep, medium-sized punctures, interspaces between punctures 1–2 punctures’ diameters; additional smaller punctures sparsely distributed between frontal furrows or especially densely distributed among median-sized one, which interspaces reduced to narrow longitudinal ridges on frontal region; 2) anterior angles of pronotum obviously widened, lateral margins sinuate with the narrowest at basal 1/3; 3) admedian row of pronotum consisting of 9–10 punctures; lateral row, curvedly arranged, of 7–9 punctures; 4) mesoscutellum s hiny, extensively covered with distinct polygonal recticulum; 5) tergites III–VII covered with mixed microsculpture of transverse microstriae and isodiametric meshes; 6) male tergite X with slightly rounded basal margin and emarginated posterior margin; 7) male sternite IX with deflected mediobasal margin and obviously emarginated posterior margin; 8) anterior portion of median lobe of aedeagus cylindrical and long, 1/3 of basal bulb length; 9) parameres symmetrical and thin, slightly shorter than 1/2 of basal bulb length; 10) internal sac morphology. Although this species has similar external characters with Megalinus flavus (Bordoni) , they could be distinguished by the above combined points of 2, 5, 6–10.