Megalinus metallicus ( Fauvel, 1895 )

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 : 45-48

Megalinus metallicus ( Fauvel, 1895)

( Fig. 14A–H ; Fig. 14 -1A–H)

Fauvel, 1895: 243 ( Xantholinus ; Type locality: Bírmanie, Carin Asciuii Ghécu, 1400–1500 m); Bernhauer & Schubert, 1914: 305 (catalog); Bernhauer, 1922: 231 ( Formosa); Cameron, 1932: 26 (characters; Burma; Assam; India); Scheerpeltz, 1933: 1312 (catalog); Scheerpeltz, 1965: 105 ( Burma); Shibata, 1973: 55 ( Megalinus ; Taiwan); Coiffait, 1982b: 231 ( Xantholinus ; India); Coiffait, 1982a: 26 ( Lepidophallus ; characters; Nepal); Herman, 2001a: 3661 ( Lepidophallus ; catalog); Bordoni, 2002: 641 ( Lepidophallus ; redescriptions; three new synoymies; Yunnan, Guizhou, Guangxi, Fujian, Hong Kong); Bordoni, 2003c: 268 ( Lepidophallus ;Yunnan, Guizhou, Fujian, Hong Kong); Smetana, 2004: 689

Syn.: Xantholinus aeneus Cameron, 1943: 127 (Type locality: India, Darjeeling: Ghum district); Herman, 2001a: 3779 (catalog); Bordoni, 2002: 641 (synonmy of Lepidophallus metallicus ; characters); Smetana, 2004: 689 (catalog; synonym of Lepidophallus metallicus ).

Xantholinus assamensis Cameron, 1932: 27 (Type locality: India, Assam, Naga Hills, Laimatak); Scheerpeltz, 1933: 1308 (catalog); Herman, 2001a: 3782 (catalog); Bordoni, 2002: 641 (synonmy of Lepidophallus metallicus ; characters); Smetana, 2004: 689 (catalog; synonym of Lepidophallus metallicus ).

Xantholinus niger Cameron, 1926: 343 (Type locality: India, Kheri Rau, Siwaliks); Cameron, 1932: 25 (characters; India); Scheerpeltz, 1933: 1313 (catalog); Herman, 2001a: 3814 (catalog); Bordoni, 2002: 641 (synonmy of Lepidophallus metallicus ; characters); Smetana, 2004: 689 (catalog; synonym of Lepidophallus metallicus ).

Additional materials: with labels as follows: “CHINA: Yunnan [ CH 07-11A], Baoshan ‘Pref.,’ Gaoligong Shan, m. Xiaoheishan ‘N. R.,’ 35 km SE, ‘Tengchong,’ 2110 m, ‘24°50'16''N,’ ‘98°45'43'E,’ decid., ‘forest, fungi, sifted,’ 4. VI.2007, leg. A. Pütz” / “ Megalinus , metallicus (Fvl) , BORDONI det. 2008” (CP); CHINA: Guangxi: Fangchenggang City: Fulong co. (E 107.9518, N 21.8146), one male, 3 females, 220 m, 20. III .1998 , Zhou Haisheng collected; one male, 650 m, 12. III .1998 , Wu Min collected; Napo co.: Defushuiyuanlin Nature Reserve (E 105.7965, N 23.3148), 2 females, 1400 m, 05. IV .1998 , Zhou Haisheng collected; one female, 850 m, 02. IV .1998 , Zhou Haisheng collected; 2 females, 1440 m, 05. IV .1998 , Qiao Gexia collected; one female, same data as above, except Li Wenzhu collected; Nianjin Village (E 105.8816, N 22.9474), one female, 910 m, 11. IV .1998 , Zhou Haisheng collected; Jingxi co. (E 106.4178, N 23.1341): one male, 2 females, 790 m, 01. IV .1998 , Zhou Haisheng collected; Daxing co. (E 107.2006, N 22.8293): one male, one female, 280 m, 29. III .1998 , Zhou Haisheng collected; Xialei village: Shuiyuanlin Nature Reserve (E 106.7588, N 22.9125), one male, 660 m, 31. III .1998 , Zhou Haisheng collected; Pingxiang City: Longzhou co. : Daqing Shan (E 106.6998, N 22.3008), one male, 360 m, 24. III .1998 , Zhou Haisheng collected; Sichuan: Dujiangyan City: Puyang co. : Huaxicun village (E 103.7171, N 31.0547), one female, 700 m, 12. V .2009 , Zhou Yulingzi collected; Fujian: Zhangzhou City: Nanjing co. : Xiangxi village : Huboliao Nature Reserve (E 117.2745, N 24.5202), 2 males, 195 m, 24.XI.2008, Wang Fengyan collected; Wuping co.: Liangye Shan : Yunca (E 116.1578, N25.1684), one male, 718 m , 09.XI.2008, Wang Fengyan collected; Kongxia (E 116.1747, N 25.2357), one female, 480 m , 17.XI.2008, Wang Fengyan collected; Shanghang co.: Meihua Shan : Jiaolongtan (E 116.8567, N25.3412), one male, 1070 m , 05.XI.2008, Wang Fengyan collected; Hainan: Baisha co.: Yingge Ling (E 109. 4984, N 19.0812), one male, one female, 525 m , 25.XI.2009, Lin Meiying collected; Qiongzhong co.: Limu Shan (E 109.8016, N 19.2349), one male, 630 m , 28.XI.2007, Yang Zhuo collected; Yunnan: Jingdong co.: Ailaoshan Field Station (E 98.2974, N 25.1119), one male, 2485 m , 20.IX.2010, Zhou Yulingzi collected; Xizang: Motuo (E 95.3332, N 29.3253), one male, 800 m , 07. II .1983 , Lin zai collected; one female, except 28. IV .1983 , 1000–1150 m; Chongqing: Beipei District , one female, 03. III .1945 ; Fengdu co.: Shiping , one female, 610 m, 02. VI .1994 , Zhang Youwei collected; Shanghai (E 121.4737, N 31.2304): 1 ex., 29. VI.1934 ( IZ-CAS).

Male. Abdominal segment VIII entirely covered with setiferous punctures, except a narrow medial longitudinal impunctate band; posterior margins of tergite VIII slightly emarginated forwards, that of sternite VIII slightly protruding medially ( Fig. 14 -1A, B). Tergite IX symmetrical, connected mediobasally. Sternite IX symmetrical, with slightly acuminate base and emarginated posterior margin ( Fig. 14H ; Fig. 14 -1C). Tergite X symmetrical, with subtruncated basal margin and broadly emarginated posterior margin ( Fig. 14G ; Fig. 14 -1D), in situ broadly exposed between tergite IX. Median lobe of aedeagus oviform, large sized ( Fig. 14 -1E, F), basal piece without transparent, membranous medial-longitudinal band; basal bulb 1.75 mm long ( Fig. 14D ), anterior portion short, tapered apically and, 0.21 mm. Parameres symmetrical and long, 1/2 of basal bulb length, with long hooklike structures. Internal sac with curved and soft scales, medium portion with large spines, apical portion with two rows of tiny spines ( Fig. 14E, F ; Fig. 14 -1E).

Female. Posterior margin of sternite VIII ( Fig. 14 -1G) distinctly protruding backwards. Genital segment medium sized ( Fig. 14 -1H), 0.63 mm long, sternite with bisinuate base; supplementary sclerites symmetrical, subtriangular, and medium sized of 0.29 mm long, overlapped 1/3 part of basal margin of genital sternite.

Distribution. China (Hainan, Yunnan, Guangxi, Sichuan, Fujian, Xizang, Chongqing, Shanghai); Pakistan, India, Nepal, Myanmar, Thailand, Vietnam.

Remarks. This species ( Fig. 14A–C ) could be distinguished from its congeners by: 1) head subquadrate, with slightly dilated temples; 2) dorsal surface of head distributed with round, deep, large-sized punctures, interspaces between punctures 1–2 punctures’ diameter; 3) the impunctate medial longitudinal band on head not narrower than 0.25 mm; 4) eye large, 1/2 of temple length; 5) three paired large punctures on the frontal region; 6) frontal and anteocular furrows distinctly deep and long; 7) antennomere II slightly rounded, longer than III; 8) tergites III–VII covered with superficial transverse microstriae, each segment with basal impression, which covered with polygonal reticulum; 9) parameres with long hook-like structures; 10) internal sac with curved and soft scales, medium portion with large spines, apical portion with two rows of tiny spines.

Figures

FIGURE 14. Megalinus metallicus (Fauvel): A. head; B. pronotum; C. elytra; D. basal bulb, dorsal view; E. parameres and endophallus, ventral view; F. parameres and endophallus, dorsal view; G. tergites IX and X; H. sternite IX. Scale bars 0.30 mm.