Ctenothrips distinctus (Uzel)

Wang, Zhaohong, Li, Yajin, Tong, Xiaoli & Mound, Laurence, 2020, Phylogenetic analysis of the Taeniothrips genus-group, with revision of the species of Ctenothrips and Vulgatothrips (Thysanoptera, Thripinae), Zootaxa 4750 (3), pp. 301-327 : 310

Ctenothrips distinctus (Uzel)

Physopus distincta Uzel, 1895: 121 .

( Figs 3 , 16, 17, 21, 24, 28, 31 , 44 )

This species has been recorded widely in northern Eurasia, from Finland, Sweden, Netherlands, Germany, Switzerland, Slovakia, Ukraine, Siberia, to Vladivostok and Korea ( Kucharczyk & Kucharczyk, 2008; Kudô, 1977), also Shandong province in China ( Han 1997). However, the collecting record from China might be unreliable, because Han (1997) described the species as having a mesosternal spinula, whereas distinctus has no mesosternal spinula ( Fig. 24 ). This species was described with obvious reticulate sculpture on the pronotum ( Fig. 16 ), but visibility of these reticulations is highly dependent on the quality of slides, and the pronotal median area is always without sculpture ( Fig. 17 ). In the present study, specimens collected in Europe from Norway, Poland, Germany and Austria were studied, and all of them have dark brown femora and yellow tibiae ( Fig. 28 ). In contrast, specimens from Vladivostok and South Korea have the tibiae yellowish brown. The distribution of distinctus extends across the Palaearctic from Europe to Siberia and possibly as far east as Vladivostok, and the distribution of bridwelli extends across the Nearctic from Boston to at least as far as west as Alberta. There thus seems to be a possibility that these colour variants represent a single Holarctic species that exists as a Holarctic circum-polar cline.

Material examined: AUSTRIA, 2 females from Convallaria , viii.1960 (H.P. Blütter) . GERMANY, Rhineland, Leverkusen, Berg Neukirchen , 2 males from Convallaria majalis , 17.viii.2001 (M. Boness). NORWAY, 14 females, 5 males from Convallaria majalis also 8 females, 2 males (S. Kobro). POLAND , 2 females, 11.vi.2018 (H. Kucharzyk). RUSSIA, Vladivostok, 2 females from Urtica , 5.v.2012 (A. Wells) . SOUTH KOREA, 3 females and 1 male from Lilium leaves, 8.viii.2009 (H. Kurahashi) . CHINA, Jilin, 2 females and 1 male from Rhododendron , 13.ix.2015 (J. Wang) .

Figures

FIGURES 2–15. Characters on head & pronotum. 2–9 Head: (2) C. kwanzanensis; (3) C. distinctus; (4) C. parisae; (5) C. transeolineae; (6) V. smilax; (7) V. dissimilis; (8) H. aino; (9) Ta. damansarae. 10–15 Head and pronotum: (10) Ay. chaetophora; (11) Ta. eucharii; (12) Te. frici; (13) C. bridwelli; (14) V. shennongjiaensis; (15) C. transeolineae.

FIGURES 16–31. Characters on thorax. 16–19 pronotum: (16) C. distinctus; (17) C. distinctus; (18) C. transeolineae; (19) C. parisae. 20–23 Meso-and metanotum: (20) V. shennongjiaensis; (21) C. distinctus; (22) Ta. eucharii; (23) C. parisae. 24–26 Meso-and metasternum: (24) C. distinctus; (25) Ta. eucharii; (26) V. smilax. 27–28 Hind leg: (27) C. bridwelli; (28) C. distinctus. 29–31 Fore wing: (29) Ta. orionis; (30) C. parisae; (31) C. distinctus.

FIGURES 39–52. Characters on abdomen. 39–40 Tergites: (39) Ta. orionis tergites III–IV; (40) Ta. eucharii tergites IV–VI; (41) V. shennongjiaensis tergite VIII; (42) Te. frici tergites VI–X; (43) C. kwanzanensis tergites V–VII; (44) C. distinctus VII–IX. 45–46 Male sternites: (45) C. parisae; (46) V. shennongjiaensis. 47–49 Male tergites IX: (47) C. kwanzanensis; (48) C. parisae; (49) C. transeolineae. 50–52 Sternites: (50) C. bridwelli; (51) Ta. picipes; (52) V. shennongjiaensis.