Megalotomus junceus ( Scopoli, 1763 )

Yi, Wenbo, Wang, Shijun, Zhang, Hufang & Bu, Wenjun, 2022, Notes on Megalotomus Fieber, 1860 in the Palaearctic Region (Hemiptera, Heteroptera, Alydidae), Zootaxa 5128 (2), pp. 211-224 : 216

Megalotomus junceus ( Scopoli, 1763)

( Figs. 8–10 , 26–28 )

Cimex junceus Scopoli, 1763: 135 . Syntype (s): Slovenia, Ljubljana; lost ( Dolling 2006).

Alydus limbatus Herrich-Schaeffer, 1835 : pl. 12 and legend (syn. Reuter, 1888: 164). Syntypes: Germany (Stuttgart) and Slovenia? (Istria); ZMHB (in part).

Alydus pavidus Gorski, 1852: 131 (syn. Fieber, 1861: 226, with limbatus ).

Megalotomus junceus ( Scopoli, 1763) : Hsiao, 1977: 276–277; Nonnaizab et al., 1986: 305–313; Moulet, 1995: 272–273; Nonnaizab, 1999: 76–77; Dolling, 2006: 38; Huang et al, 2013: 135–136.

Diagnosis. This species is recognized within the genus Megalotomus by a combination of the following characters: medium-sized, 13.0– 14.5 mm in length, body slender, mostly dark black, anterior margins of forewings yellowish, anterior half of connexivum of abdominal segments IV–VI with a bright yellowish patch on each side; antennal segment IV longer than segments II and III together; posterior angle of pronotum acute and pointed, with sharp apex; surcapsular spines of the genital capsule straight, each one with a broadly triangular process at the outer margin close to base and a series of small serrations on the inner margin of apex; parameres wide and slightly curving, each one with two pointed terminal apices.

Material examined. China: Hebei Province: 5 ♂♂, 2 ♀♀, Xiaowutaishan National Nature Reserve , Songzhikou, 1200 m, 3-August-2000, Weibing Zhu, Jincheng Ge, Wenjun Bu, Wenxiang Wang leg. ( NKUM) ; 1 ♂, 3 ♀♀, Xiaowutaishan National Nature Reserve , Yuxian County, 1200 m, 26-July-2000, Jincheng Ge, Peng Wang, Guoqing Liu leg. ( NKUM) ; 1 ♀, Xinglong County, 23-June-1995, Jianzhen Dong leg. ( NKUM) ; Heilongjiang Province: 3 ♂♂, Ning’an City, Pubu Village , 7-August-2003, Yunling Ke leg. ( NKUM) ; 3 ♂♂, 4 ♀♀, Ning’an City, Jingpo Lake , 11-August-2003, Weibing Zhu leg. ( NKUM) ; 4 ♂♂, 5 ♀♀, Ning’an City, Xiaobeihu Forestry Farm , 5-August-2003, Ying Tian leg. ( NKUM) ; Liaoning Province: 3 ♂♂, 4 ♀♀, Kazuo County, Caochang Town, Seshuling , 18-August-1998, Yiping Wang leg. ( NKUM) ; 1 ♀, Kazuo County, Shizui Mountain , 15-August-1998, Yiping Wang leg. ( NKUM) ; 1 ♀, Beipiao City, Daheishan , 2-August-2012, Wenbo Yi, Junli Xue leg. ( NKUM) ; Jilin Province: 1 ♀, Changbai Mountain, Antu County, Erdao Village , 26-August-2001, Jun Li leg. ( NKUM) ; Inner Mongolia: 1 ♂, Huhhot, Daqing Mountain , 11-September-1991, Leyi Zheng leg. ( NKUM) .

Distribution. Asia: China (Beijing, Hebei, Heilongjiang, Liaoning, Jilin, Jiangsu, Inner Mongolia, Shandong), Kazakhstan, Mongolia, North Korea, Russia (East Siberia, Far East, West Siberia), South Korea; Europe: Austria, Bosnia Hercegovina, Bulgaria, Croatia, Czech Republic, France, Germany, Hungary, Italy, Macedonia, Romania, Russia (Central European Territory, South European Territory), Slovakia, Slovenia, Switzerland, Ukraine, Yugoslavia ( Serbia, Montenegro).

Remarks. This is the most widespread species among the genus, and has been recorded in many countries from the Palaearctic region (see above).

Figures

FIGURES 8–16. Megalotomus spp., dorsal, lateral and ventral views. Figs. 8–10, M. junceus (Scopoli, 1763), female (China: Liaoning Province, Beipiao City); Figs. 11–13, M. ornaticeps (Stål, 1858), male (China: XinjiangAutonomous Region, Tacheng County, Yemenle Town); Figs. 14–16, M. castaneus Reuter, 1888, female (China: Hebei Province, Xiaowutaishan); Figs. 8, 11, 14, dorsal views; Figs. 9, 12, 15, lateral views; Figs. 10, 13, 16, ventral views. Scale in mm.

FIGURES 23–43. Male genitalia of Megalotomus spp. and Alydus calcaratus (Linnaeus, 1758). Figs. 23–25, M. angulus (Hsiao, 1965) comb. nov.; Figs. 26–28, M. junceus (Scopoli, 1763); Figs. 29–31, M. ornaticeps (Stål, 1858); Figs. 32–34, M. castaneus Reuter, 1888; Figs. 35–37, M. zaitzevi Kerzhner, 1972; Figs. 38–40, M. acutulus Liu & Liu, 1998; Figs. 41–43, Alydus calcaratus (Linnaeus, 1758); Figs. 23, 26, 29, 32, 35, 38, 41, genital capsules, dorsal view, parameres removed, pilosity only shown on left side; Figs. 24, 27, 30, 33, 36, 39, 42, left parameres, dorsal view; Figs. 25, 28, 31, 34, 37, 40, 43, same, lateral view. Scale in mm.