Notes on Megalotomus Fieber, 1860 in the Palaearctic Region (Hemiptera, Heteroptera, Alydidae) Author Yi, Wenbo Department of Biology, Xinzhou Teachers University, Xinzhou 034000, China Author Wang, Shijun School of Plant Protection, Shanxi Agriculture University, Taigu 030800, China Author Zhang, Hufang Department of Biology, Xinzhou Teachers University, Xinzhou 034000, China Author Bu, Wenjun Institute of Entomology, Nankai University, Tianjin 300071, China text Zootaxa 2022 2022-04-20 5128 2 211 224 journal article 55848 10.11646/zootaxa.5128.2.3 7b070c6a-fd3e-40b6-b8b2-f38d09aa9360 1175-5326 6479798 64977C0C-5A79-47C5-96BF-7895D1FFBC7B 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).