Eurystylus coelestialium (Kirkaldy)

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 : 307

Eurystylus coelestialium (Kirkaldy)

Figs. 2 A–B, 5I –J, 8A, Table 1

Olympiocapsus coelestialium Kirkaldy, 1902 (n. sp.).

Eurystylus coelestialium Poppius, 1911: 2 (n. comb., key); Miyamoto & Yasunaga, 1989: 160 (list); Yasunaga et al., 1993: 59 (diag.); Schuh, 1995: 767 (cat.); Kerzhner & Josifov, 1999: 99 (cat.); Yasunaga, 2001: 233 (diag.); Zheng et al., 2004: 273 (diag.); Schuh (2002–2014) online catalog.

Eurystylus sauteri: Zheng & Lin, 2003: 328 (diag.) (not Kirkaldy, 1902).

Diagnosis. Recognized by its generally dark brown, less mottled dorsum; a pair of clear, ocellate spots on pronotum; dark scutellum with whitish lateral corners (except for darkened posterior tip); each femur creamy white (pale brown in dried specimens) with apical 1/3–1/4 darkened ( Fig. 2 A); and male endosoma with PL smooth, lacking spinules or teeth and TL sharply hooked ( Fig. 5 I–J). Total length 5.1–7.8 (♂)/ 6.3–8.1 (♀); maximum width 2.4–3.0 (♂)/ 2.9–3.3 (♀). Most similar to E. burmanicus ; distinguished by generally darker basic coloration, somewhat thicker antennal segment II, and scutellum lacking a yellow, mesal stripe (cf. Fig. 2 A, E). Final-instar nymph ( Fig. 2 B) recognized by its uniformly pale whitish green body; clearly darkened apical parts of antennal segments II–IV; laterally darkened pronotum with a pair of ocellate spots; and 4 or 5 pairs of ocellate spots on abdominal sterna.

Biology. This common univoltine mirid is associated with various inflorescences ( Table 1) and most probably hibernates in the egg stage. In the western part of Japan mainislands and Taiwan, it frequently co-occurs with E. sauteri . The population in warm temperate and subtropical zones may have two or more generations per year, based on collection data.

Material examined. Lectotype ♂: CHINA: Ngan Hoei [= Anhui], Hochan [= Huoshan, N 36 E106], Yoannis (mounted together with paralectotype ♀ as in Fig. 8 A, MZHF, without USIs). Additional material. More than 350 specimens ( CNC, NIAES, TFRI, TYCN) collected between Jun 15 and Oct 29 from the following localities . JAPAN: Hokkaido: Soya, Rishiri Island, Oniwaki (45.14, 141.29), 1♂ with USIs ( AMNH _PBI 00380479); Hiyama, Okushiri Island (42.14, 139.46) & Kaminokuni Town ; Kamikawa, Asahikawa City, Etanbetsu & Inoh- Kasuga; Kushiro, Teshikaga Town ; Sorachi, Ashibetsu, Utashinai & Yubari City ; Ishikari, Sapporo City & Tobetsu Town ; Iburi, Tomakomai City ; Shiribeshi, Otaru City ; Tokachi, Obihiro City, Hiroo Town & Ashoro Town ; Hidaka, Erimo. Honshu: Yamagata Pref., Sumata ; Miyagi Pref., Mt. Hayachine , Kawaranoboh & Sendai City ; Ibaraki Pref. , Tsukuba City ; Saitama Pref., Oku-Chichibu, Mt. Jomine ; Niigata Pref., Tsunan Town ; Yamanashi Pref., Minakami Village ; Nagano Pref., Minoto ; Shiga Pref. , Otsu City ; Osaka , Ibaraki City ; Nara Pref., Tsukigase & Kamikitayama Village . Wakayama Pref., Katsuragi Town, Shirahama Town, Susami Town & Tanabe City ; Hiroshima Pref., Geihoku. Shikoku : Ehime Pref., Ishizuchi-Road ; Kochi Pref., Kami City (Monobe), Motoyama Town , Sukumo City & Tosashimizu City. Kyushu: Fukuoka Pref., Soeda Town, Mt. Hikosan ; Kumamoto Pref., Izumi Village ; Miyazaki Pref., Shiiba Village ; Nagasaki Pref., Tsushima Island , Nagasaki City , Saikai City , Unzen City , Omura City & Isahaya City. — 1♂ from Unzen City, Azuma (32.81, 130.25) with USIs ( AMNH _PBI 00380480) ; Saga Pref. , Kashima City & Mitsuze Village . CHINA: Sichuan, Mt. Emei, Baoguosi [ Buddhist temple] (29.56, 103.44), 1♂ with USIs. ( AMNH _PBI 00380476) . KOREA: Kyonggi-do, Suwon City ; Chungcheongbuk-do, Sangcheon, Susan-myeon (36.96, 128.24); Gangwon-do , Pyeongchang , Suhang (37.60, 128.55), 1♀ with USIs. ( AMNH _PBI 00380478) . RUSSIA: Promorsky Territory: Ussury, SW of Krounovka (43.73, 131.6 0), 1♀ with USIs ( AMNH _PBI 00380477); Khasansky Dist. , Ryazanovka (42.80, 131.25) . TAIWAN: Taoyuan County, Hokheng, Paling (24.67, 121.38), 1♀ with USIs ( AMNH _PBI 00380476) ; Taoyuan County, Hsuanyuan ; Kaohsiung County, Maolin District, Shanping Forest Ecological Garden (22°58'20"N 120°40'44"E) ; Kaohsiung City, Liouguei District, Zhong-Xing-Long Li, near Mt. Taiyuanshan (22°59'22"N 120°40'44"E) ; Nantou County, Wushe; Jenai, Chunyang.

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 5. Endosoma and adjacent structures of Eurystylus species. A – C. E. ryukyus n. sp. D – G. E. sauteri Poppius. H. E. jingfui n. sp. I – J. E. coelestialium. Scale bars 0.2 mm.

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.