Stigmatonotum rufipes ( Motschulsky, 1866 )

Ban, Teruaki, 2023, A new species of the genus Stigmatonotum (Hemiptera: Heteroptera: Rhyparochromidae) from Japan, with notes on related species from the East Palaearctic and Oriental Regions, Acta Entomologica Musei Nationalis Pragae 63 (2), pp. 265-278 : 274

Stigmatonotum rufipes ( Motschulsky, 1866)

[Japanese name: Chibi-nagakamemushi]

( Fig. 7 )

Plociomerus rufipes Motschulsky, 1866: 188 (original description).

Lectotype: Japan ( ZMUM).

Plociomerus rufipes (selected references): STÂL (1874): 167 (listed);

LETHIERRY & SEVERIN (1894): 232 (listed); BERGROTH (1921):

101–102 (redescription); SLATER (1964): 1169 (catalogue).

Stigmatonotum rufipes (selected references): SCUDDER (1970): 103

(transferred from Plociomerus ); HARRINGTON (1980): 89 (listed);

KERZHNER & JANSON (1985): 40 (lectotype selected); SLATER &

ZHENG (1985): 23–24 (redescription, biological note, synonymy,

key to species, illustrations of male genitalia); TOMOKUNI (1994):

135 (fauna of Hokkaidô); SLATER & O’DONNELL (1995): 163–164

(world catalogue); PḖRICART (2001):179–180 (Palaearctic catalogue);

KERZHNER et al. (2004):236 (listed); KANYUKOVA & MARUSIK (2006):

173 (listed); CHO et al., (2011): 321 (listed); ISHIKAWA & TOMOKUNI

(2012): 352 (photo, diagnosis, distribution); NOMURA & KAMITANI

(2013):92 (listed); YANO et al. (2012): 92 (listed); HAN et al. (2013):5

(listed); JUNG et al. (2013): 242 (listed); LIM et al.(2013):110 (listed);

NAGASHIMA et al. (2015): 40 (listed); ISHIKAWA (2016): 466 (listed,

distribution); SHINKAI et al. (2020): 78 (listed); NOZAKI et al. (2022):

17 (listed); DELLAඉḖ & HENRY (2022) (bibliography).

Stigmatonotum sparsum Lindberg, 1927: 10 (original description).

Holotype: Russia, Ussuri , Spasskaja ( MZHF). Synonymized with S.

rufipes by HASEGAWA (1960: 38).

Stigmatonotum sparsum : SLATER (1964): 1181 (catalogue); HARRINGTON

(1980): 89 (listed); ZHENG & ZOU (1981b): 163–164 (redescription). Pamera japonica : MATSUMURA (1931): 1199 (misidentification).

Material examined. JAPAN: HOKKAIDô: 1 ♀, Shimukappu-mura / Naka-tomamu / N 43 ° 2’58.581” E 142 ° 37’24.4056” / Alt., 582 m / 30.V.2015 / Teruaki Ban (CBM-ZI 189969); 1 J, Date-shi / Ôtaki-ku / Kitayuzawa-Onsen-chô / N 42 ° 37’13.0” E 141 ° 01’22.9” / Alt., 292 m / 6.VIII.2015 / Teruaki Ban (CBM-ZI 189970); 1 ♀, Yakumo-chô / Tateiwa / N 42°15’59.1” E 140°15’58.3” / Alt., 4 m / 23.VII.2015 / Teruaki Ban (CBM-ZI 189971); 1 ♀, Kikonai-chô / Kamekawa / N 41 ° 43’25.6” E 140°30’16.7” / Alt., 90 m / 23.VIII.2016 / Teruaki Ban (CBM-ZI 189972). HONSHU: 3 JJ 1 ♀, Gunma Pref. / Katashina- -mura / Mt. Hotaka / N 36 ° 48’33.5” E 139 °1 1 ’26.7” / Alt., 1449 m / 2.VIII.2007 / Teruaki Ban (CBM-ZI 189973–976); 1 ♀, Chiba Pref. / Yokoshiba-hikari-machi / Shinomoto / N 35°43’17.6” E 140°28’53.3” / Alt., 5 m / 30.VI.2006 / Teruaki Ban (CBM-ZI 189977); 2 JJ, Chiba Pref. / Chiba-shi / Chuô-ku / Aoba-chô / N 35°36’1” E 140°8’15” / Alt., 15 m / 23.VI.2020 / Teruaki Ban (CBM-ZI 189921–922); 1 J, same locality / 21.VII.2020 / Teruaki Ban (CBM-ZI 189872); 1 J 1 ♀, same locality / 18.VIII.2020 / Teruaki Ban (CBM-ZI 189873–874); 4 JJ 2 ♀♀, same locality / 15.IX.2020 / Teruaki Ban (CBM-ZI 189978–983); 1 J, Nagano Pref. / Minamisaku-gun / Minami-maki-mura / Itabashi / 5. IX. 2022 / Jun Souma ( SIHU); 1 J 1 ♀, Niigata Pref. / Sado Island / Sado-shi / Mt. Donden-yama / N 38 ° 08’17.4” E 138 ° 23’23.9” / Alt., 899 m / 10.IX.2010 / Teruaki Ban (CBM-ZI 189984–985); 1 ♀, Shiga Pref. / Nagahama-shi / Minamihama-chô / Anegawa Riv. / N 35°23’16.1” E 136°12’57.7” / Alt., 87 m / 20.V.2023 / Teruaki Ban (CBM-ZI 189986); 3 JJ 1♀, Shiga Pref. / Takashima-shi / Makino-chô / Hiruguchi / N 35°27’ 45” E 136 ° 03’21.9” / Alt., 89 m / 15.VIII.2013 / Teruaki Ban (CBM-ZI 189987–990); 1 J, Shiga Pref. / Takashima-shi / Imazu-chô / Hamabun / N 35°24’ 45.5” E 136 ° 02’37.5” / Alt., 87 m / 15.VIII.2013 / Teruaki Ban (CBM-ZI 189991); 1 J, Shiga Pref. / Takashima-shi / Imazu-chô /

25.VII.2008 / Satoshi Fujinuma (CBM-ZI 189992); 1 J 1 ♀, Okayama Pref. / Okayama-shi / Tamagawa Riv. / 22.IV.2003 / Hanae Yamamoto (CBM-ZI 189993–994); 1J, Okayama Pref. / Okayama-shi / Tamagawa Riv. / 22.IV.2003 / Hanae Yamamoto (CBM-ZI 189995); 1 J, Hiroshima Pref. / Hiwa- chô / Hiwa / Light Trap / 22.VII.2001 / Takeo Yamauchi ( OUAV); 2 JJ, Yamaguchi Pref. / Iwakuni-shi /Shutô-chô / Youda / Light Trap / N 34°03’26.3” E 132 ° 03’05.6” / Alt., 104 m / 17. VII. 2009 / Teruaki Ban (CBM-ZI 189996–997).

Differential diagnosis. This species can be distinguished from other congeners of Stigmatonotum as well as Humilocoris by the following combination of characters: maximum body length more than 4.0 mm (in S. geniculatum , maximum body length less than 4.0 mm); ground color of scape yellow (in S. geniculatum , ground color of scape dark brown); antennomeres II and IV less than twice longer than scape (in S. macronotum , antennomeres II and IV more than twice longer than scape); labium reaching anterior portion of mesocoxae (in H. cephalotes and S. macronotum , labium reaching middle of mesocoxae); length of anterior lobe of pronotum 1.3 to 1.5 times longer than posterior lobe (in S. macronotum and S. geniculatum , anterior lobe of pronotum approximately same length as posterior lobe); profemur ( Figs 7C–D ) with only 1 small spine, without large spine (in H. cephalotes and S. macronotum , profemur with at least 2 large spines); profemur entirely yellow (in S. geniculatum and S. macronotum , profemur with dark brown annulations).

Biology. Specimens were collected by sweeping and light trap from wet grassland. Rubus palmatus Thunberg , Duchesnea indica (Andr.) Focke , Fragaria sp. (all Rosaceae ), and Prunella vulgaris L. ( Lamiaceae ) were recorded as host plants of this species ( ZHENG & ZOU 1981b, SLATER & ZHENG 1985).

Distribution. Japan: Hokkaidô ( TOMOKUNI 1994, ISHI- KAWA & TOMOKUNI 2012, ISHIKAWA 2016, present study); Chishima Islands: Shikotan Is. ( KERZHNER et al. 2004, KANYUKOVA & MARUSIK 2006); Kunashiri Is. ( KANYUKOVA & MARUSIK 2006); Etorofu Is. ( KANYUKOVA & MARUSIK 2006); Rishiri Island ( ISHIKAWA 2016); Rebun Island ( ISHIKAWA 2016); Honshu ( ISHIKAWA & TOMOKUNI 2012, ISHIKAWA 2016, present study); Izu Islands: Miyake-jima Is. ( ISHIKAWA 2016); Sado Is. (present study); Shikoku ( ISHIKAWA & TOMOKUNI 2012, YANO et al. 2012, ISHIKAWA 2016); Kyushu ( NOMURA & KAMITANI 2013, SHINKAI et al. 2020, NOZAKI et al. 2022). Korea ( SLATER & ZHENG 1985, PḖRICART 2001, CHO et al. 2011, HAN et al. 2013, JUNG et al. 2013, LIM et al. 2013). China: Hebei ( ZHENG & ZOU 1981b, SLATER & ZHENG 1985); Sìchuan ( ZHENG & ZOU 1981b, SLATER & ZHENG 1985); Heilongjiang ( ZHENG & ZOU 1981b, SLATER & ZHENG 1985). Russia: Far East ( SLATER & ZHENG 1985, PḖRICART 2001).

Figures

Fig. 7. Dorsal and ventral view of Stigmatonotum rufipes (Motschulsky, 1866). A–B – male (dorsal view; ventral view); C–D – female (C – dorsal view; D – ventral view). Scale bars = 1 mm.