Meges gravidus ( Pascoe, 1858 )

Bi, Wen-Xuan, Chen, Chang-Chin & Lin, Mei-Ying, 2022, Taxonomic studies on the genera Meges Pascoe, 1866 and Pseudomeges Breuning 1944 from China (Coleoptera, Cerambycidae, Lamiinae, Lamiini), Zootaxa 5120 (2), pp. 242-250 : 244

Meges gravidus ( Pascoe, 1858)

( Figs. 1 , 6 , 8 )

Monohammus gravidus Pascoe, 1858: 245 . Type locality: North China.

Meges gravidus: Pascoe, 1866: 272 .

Merges [sic] gravidus: Lacordaire, 1869: 311 .

Apriona multimaculata Pic, 1933: 31 . Type locality: Tche-Fou (Yantai), Shandong, China. Synonymized by Breuning, 1944: 445

Type material examined. Holotype, female, “ Monochamus / gravidus / type Pasc ”, “ Meges / gravidus / Pas ”, “ Borneo? ”, “Type” ( NHML). Examined by photographs taken by Xicui Du in 2013.

Other material examined. China (Henan): 1 female, Henan ( IZAS) . China (Anhui): 1 female, Anhui, Yuexi, Yaoluoping, Menkanling, 1,100 m, 2021.VII.7, leg. Wen-Xuan Bi ( CBWX) ; 1 female, ditto except 1,129 m, 2021. VII.6, leg. J.-T. Zhao ( CCCC) . China (Zhejiang): 1 male, Zhejiang, Xitianmushan, 350 m, 2005.VII.9, leg. Wen-Xuan Bi ( CBWX) ; 1 female, ditto except 2006.VII.1-9 ( CBWX) ; 1 female ditto except 2009.VIII.18, leg. Liang Tang ( CBWX) ; 1 male, ditto except 2016.VII.4, leg. Wen-Xuan Bi ( CBWX) ; 1 female, ditto except 2016.VII.5 ( CBWX) ; 1 female, ditto except 2016.VII.24, leg. Yong-Xiang Wu ( CBWX) ; 1 male, ditto except 1,250 m, 2016. VII.29, leg. Wen-Xuan Bi ( CBWX) ; 1 male, ditto except 510 m, 2016.VIII.6 ( CBWX) ; 1 female, ditto except 350 m, 2018.VII.7, leg. Xiao-Bin Song ( CBWX) ; 1 female, Zhejiang, Hangzhou, 1978.VI ( IZAS, IOZ (E) 1896993) ; 1 male, Zhejiang, Anji, Baofuzhen, Lidongwu, 750 m, 2017.VIII.11, leg. Wen-Xuan Bi ( CBWX) ; 1 male, Zhejiang, Ningbo, Tiantongshan, 2009.VI, leg. Bin-Jie Ge ( CBWX) . China (Hunan): 1 male, Changsha, Yuelushan , 1957. VIII.2 ( IZAS) . China (Fujian): 1 female, Fujian, Quanzhou, Dehuaxian, Chishuizhen, leg. Jia-Hong Lin & Nan-Yi Tsai ( CCCC) ; 1 male, Fujian, Wuyishan, Sangang, 740 m, 1997.VIII.5, leg. Jian Yao ( IZAS) . China (Guangxi): 1 female, Guangxi, Xingan, Jinshi, 1,230 m, 2017.VII.17, leg. Y.-Q. Lu ( CCCC) .

Complementary description. Male ( Fig. 1 ). Body length 37.3–40.4 mm, humeral width 11.1–12.1 mm. Male endophallus ( Fig. 8 ) long and slender, more than 3 times as long as the median lobe, strongly curved dorsally near apical third; APH defined by the presence of af, limit between BPH and MPH indicated by a dorsal swelling; cs highly reduced, nearly unrecognizable; MPH vaguely subdivided into MT, CT and PB, without significant swelling or protuberance; PB surrounded by sf and provided with si; relative lengths of APH: MPH: BPH: PB: CT: MT = 1.0: 8.4: 1.4: 1.1: 2.8: 4.7. APH slightly curved ventrally at base with im complete and subsclerotized, clearly divided into ab and bb; ab cylindrical, moderately swollen; bb constricted near middle, provided with a pair of rodlike sclerites associated with the paired ejaculatory ducts ( Fig. 5a ), with gn situated near the apex. Spicules mainly distributed on dorsal surface or along a narrow ventral midline of CT, around the distal part of PB and the whole surface of ab.

Female. Body length 39.9–47.2 mm, humeral width 11.8–13.6 mm.

Distribution. China: Shandong, Henan, Shaanxi, Anhui, Zhejiang, Hunan, Fujian, Guangxi (new Province record).

Remarks. This species was originally described from Borneo ( Pascoe 1858, label of the holotype interpreted as “Borneo?”), but no additional specimen has been reported from there since. Study of series specimens from several localities of China suggest that the "North China " proposed in Pascoe (1866) is the correct type locality of this species. Thus, this species is accordingly excluded from the fauna of Borneo.

Figures

FIGURES 1–5. Male habitus of Meges spp. and Pseudomeges spp. 1, Meges gravidus (Pascoe, 1858) from Hangzhou City, Zhejiang, China; 2, M. tonkineus (Clermont, 1932) from Ledong County, Hainan, China; 3, Pseudomeges marmoratus (Westwood, 1848) from Motuo County, Xizang, China; 4, P. aureus Bi, Chen & Lin sp. nov. from Pingbian County, Yunnan, China; 5 Pseudomeges varioti Le Moult, 1946 from Chiang Mai, Thailand.

FIGURES 6–7. Habitus and labels of the holotype of species. 6, Monohammus gravidus Pascoe, 1858; 7, Magninia tonkinea Clermont, 1932.

FIGURES 8–11. Endophallus of Meges spp. and Pseudomeges spp. 8, Meges gravidus (Pascoe, 1858); 9, M. tonkineus (Clermont, 1932); 10, Pseudomeges marmoratus (Westwood, 1848); 11, P. aureus Bi, Chen & Lin sp. nov. a, apical phallomere in dorsal view; b, apical phallomere in non-everted condition.