Rhaconotus formosanus Watanabe, 1934

11. Rhaconotus formosanus Watanabe, 1934 View in CoL

Fig. 14 View FIGURE 14

Rhaconotus formosanus Watanabe, 1934: 119 View in CoL ; Shenefelt & Marsh 1976: 1337; Belokobylskij 1998: 69; Belokobylskij & Chen, 2004a: 354; Belokobylskij & Maeto, 2009: 422; Yu et al., 2016.

Material examined. 1♀, NE China, Liaoning Province, Kuandian County, Daxicha Forest , 28.VII.2009, N40°44′58″, E125°11′35″, 446 m GoogleMaps altitude, Tang Yan-Long; 1♀, id., but 25.VI.2009.

Hosts. Parasitoid of Massicus raddei (new record).

Distribution. China ( Fujian, Hainan, Hubei, Jilin, Liaoning, Taiwan, Yunnan, Zhejiang), Australia, Caroline Islands, Indonesia, Japan, Korea, Malaysia, Russia, Vietnam.

Remarks. Body length ♀ 3.2–3.6 mm. According to the holotype’s figures provided by National Natural Sci-ence Museum of Taiwan (2019), Watanabe’s original description ( Watanabe 1934), the key to this genus for China ( Belokobylskij & Chen 2004a) and detailed redescription of Japanese specimens ( Belokobylskij & Maeto 2009), our specimens from Liaoning belong to R. formosanus . Nevertheless, there are some minor differences, e.g., frons and vertex black, face and gena dark brown ( Figs 14 View FIGURE 14 A-C) (vs. frons, vertex, face and gena entirely yellow in holotype); ovipositor sheath 0.7 times as long as metasoma ( Fig. 14A View FIGURE 14 ) (vs. ovipositor sheath 0.9 × as long as metasoma in holotype); medio-longitudinal carina of propodeum 0.4 × as long as median length of propodeum ( Fig. 14D View FIGURE 14 ) (vs. medio-longitudinal carina of propodeum 0.2 times as long as median length of propodeum in holotype ( Fig. 1 View FIGURE 1 of Watanabe 1934)), but we consider the differences to be part of intraspecific variation in R. formosanus . Only two females have been collected, which indicates that it is an occasional parasitoid of M. raddei .