Megarhyssa praecellens ( Tosquinet, 1889 )

Cao, Liang-Ming, Achterberg, Cornelis Van, Tang, Yan-Long, Wang, Xiao-Yi & Yang, Zhong- Qi, 2020, Revision of parasitoids of Massicus raddei (Blessig & Solsky) (Coleoptera Cerambycidae) in China, with one new species and genus, Zootaxa 4881 (1), pp. 104-130 : 105-107

1. Megarhyssa praecellens ( Tosquinet, 1889)

Fig. 1

Thalessa praecellens Tosquinet, 1889: 134 .

Megarhyssa praecellens ; Sheng & Sun, 2010: 231; Sheng & Sun, 2014: 308; Yu et al., 2016.

Material examined. 1♀, NE China, Liaoning Province, Kuandian County, Daxicha Forest, 7.VII.2015, 40°44′58″N, 125°11′35″E, 455 m altitude, Cao Liang-Ming leg. It was laying eggs in the trunk of a Quercus mongolica tree infested by M. raddei .

Hosts. Parasitoid of Cerambycidae ( Massicus raddei , Anoplophora glabripennis Motschulsky ); and Siricidae ( Sirex nitobei Matsumura , Tremex fuscicornis (F.), Urocerus japonicus (Smith)) .

Distribution. China ( Beijing, Fujian, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Inner Mongolia, Ningxia, Shaanxi, Shandong, Shanghai, Shanxi, Sichuan, Taiwan, Zhejiang), Japan, Korea, Laos, Russia, Vietnam.

Remarks. Body length ♀ 43.5 mm (the examined specimen). The first record of M. praecellens parasitizing M. raddei was provided by Sheng & Sun (2010) in list of its hosts. We also report M. raddei as its host based on its oviposition in the trunk of a Q. mongolica tree, which was infested by M. raddei , and on this tree other woodborers can be excluded under our observation. However, there is still no direct evidence, such as an adult M. praecellens reared from a larva of M. raddei .

Figures

FIGURE 1. Megarhyssa praecellens (Tosquinet), ♀ A Habitus, dorsal aspect, scale bar = 20 mm B Head and mesosoma, dorsal aspect, scale bar = 2 mm C Head and mesosoma (part), lateral aspect, scale bar = 2 mm D Mesosoma, lateral aspect, scale bar = 2 mm.