Eurystylus Stål, 1871

Yasunaga, Tomohide, Nakatani, Yukinobu & Chérot, Frédéric, 2017, Review of the mirine plant bug genus Eurystylus Stål from Japan and Taiwan (Hemiptera: Heteroptera: Miridae: Mirinae), with descriptions of two new species, a new synonymy and a new combination, Zootaxa 4227 (3), pp. 301-324 : 304

Genus Eurystylus Stål, 1871

E. burmanicus ( Distant, 1904) ( Fig. 2 E)— Distribution: China (Yunnan), India, Myanmar (Karen), Nepal* (Kathmandu Valley, Makawanpur), Thailand* (Chiang Mai).— Note: This tropical species is considered to be a closest relative of E. coelestialium ( Zheng et al., 2004) , from which E. burmanicus can be distinguished by the generally grayish brown body and a clear, creamy, mesal stripe on the scutellum.

E. coelestialium ( Kirkaldy, 1902) — Japan (Hokkaido, Honshu, Shikoku, Kyushu, Okushiri Is., Rishiri Is., Tsushima Is., South Chishima [= Kuril] Islands) , China (nearly eastern half region), Korea, Russian Far East (Khabarovsky and Primorsky) , Taiwan*.— Note: This species has the northernmost distribution among the congeners, as a result of successful adaptation to cold temperate zones.

E. costalis Stål, 1871 ( Fig. 2 F)—China (widely from northeast to central and southern parts), Indonesia (Java, Sumatra) , Philippines, Thailand * (Nakhon Ratchasima), Pacific islands , Papua New Guinea*.

E. jingfui Yasunaga, Nakatani & Chérot , n. sp. — Taiwan (Kaohsiung).

E. luteus Hsiao, 1941 ( Figs. 7 , 8 B)— China (Anhui, Fujian, Guandong, Guizhou, Hainan, Jiangxi, Sichuan, Yunnan, Zejiang) , Korea?— Note: What has been identified as E. luteus in Japan and Taiwan corresponds to E. sauteri . Even the northernmost specimens in North Korea ( Fig. 8 B) cannot be positively separated from the holotype of E. sauteri ( Fig. 8 C). Both taxa are presumed to be conspecific (see discussion below).

E. ryukyus Yasunaga, Nakatani & Chérot , n. sp. — Japan (southernmost areas of Shikoku & Kyushu, Koshiki Islands, Ryukyus : Amami, Okinawa, Ishigaki, Iriomote & Yonaguni Islands ) , Taiwan.

E. sauteri Poppius, 1915 — Japan (Honshu, Shikoku, Kyushu, Tsushima Island ) , China (Guanxi), Taiwan (Kaohsiung, Nantou) .

Genus Eurystylopsis Poppius, 1911 [= Eurystylomorpha Poppius, 1915 , n. syn.]

Ep. angustatus Zheng & Lu, 1995 — China (Gansu).

Ep. chinensis Zheng & Chen, 1991 — China (Sichuan, Yunnan).

Ep. clavicornis (Jakovlev, 1890) ( Fig. 8 H–I, 9A–B, 10D–E)— China (Fujian, Gansu, Guandong, Guanxi, Guizhou, Jiangxi, Sichuan, Yunnan, Zejiang) , Nepal *( Kathmandu Valley ) , Thailand * (Chiang Mai) .

Ep. crassicornis ( Poppius, 1915) , n. comb. [ Eurystylomorpha ]— Taiwan (Kaohsiung, Nantou).

Ep. hirtipes Zheng & Lu, 1995 — China (Gansu).

Figures

FIGURE 2. Habitus images of adult females and final-instar nymph (B – D) of Eurystylus species. A – B. E. coelestialium (image courtesy of M. Takai). C. E. sauteri Poppius. D. E. ryukyus n. sp. E. E. burmanicus from Chitwan, Nepal. F. E. costalis from Kathmandu Valley, Nepal.

FIGURE 7. Map showing the distributions of three closely related Eurystylus species; records (provincial levels) in continental China based upon Zheng et al. (2004).

FIGURE 8. Habitus images of dry-preserved specimens. A. Eurystylus coelestialium, lectotype male (upper) and paralectotype female mounted together (in 1998, MZHF). B. Male det. as E. luteus by Josifov from Pyongyang, North Korea (MZHF). C. E. sauteri, holotype female. D. Eurystylomorpha crassicornis, holotype male (Taiwan). E – F. Ditto, females in dorsal (E) and ventral (F) view. G. Ditto, scent efferent system. H. Eurystylopsis clavicornis, female from Kirtipur, Nepal (ventral view). I. Ditto, male. Scale bars 2 mm. Images (C & D) courtesy of J. F. Tsai and NMNS.