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 , Song- zhikou, 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).