Ctenothrips bridwelli Franklin

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 bridwelli Franklin

Ctenothrips bridwelli Franklin, 1907: 248 .

Ctenothrips frosti Moulton, 1929 , Syn.n.

( Figs 13 , 27 , 50 , 53 )

Originally described from Dover, New Hampshire, this species has been recorded from many other States in USA, including NY, VT, MA, IL, MD, CT, TN, also Alberta and Québec, Canada ( Blanton 1939; Crawford 1939; Diffie et al. 2008; Light & Macconaill 2011). An extensive collection, including full and short-winged individuals within populations, was studied (Appendix 1), and the following variations observed: ocellar setae pair III shorter than or as long as postocular setae ( Fig. 13 ), or even much longer and almost as long as the pronotal posteroangular setae; ocellar setae pair III arising anterior to hind ocelli, between hind ocelli, or just near posterior margin of hind ocelli; tergite VIII median setae in front of campaniform sensilla, or posteromedian to campaniform sensilla; antennal segments III–V completely yellow varying to segments IV–V shaded on distal half.

The holotype of frosti was studied, which is a short-winged female in bad condition ( Fig. 54 ). We concluded that it does not differ significantly from other short-winged specimens of bridwelli . The completely dark tibiae of bridwelli is the only reliable distinction between this species and the European distinctus . A few specimens from Tennessee have been studied with yellowish brown tibiae, but these specimens may not have been fully mature.

Material examined: CANADA, Alberta, Edmonton , 12 females, 4 males from Lilium leaves, 11.ix.1979 (B.S. Heming) ; Québec, Gatineau Pk. , 4 females, 4 males from Epipactis helleborine , 28.viii.2009 ; 1 female from Trillium grandiflorum , 24.vi.2008 (M. Light). USA, Connecticut, Bridgeport , 3 micropterous females from leaves, 24.vii.1913 (H.M. Russell) ; Illinois, Muncie , 4 females from green-dragon leaves, 25.vii.1908 (C.A. Hart) ; Urbana , 1 female from Trillium recurvatum , 11.v.1907 (C.A. Hart) ; Vermont, Northfield , 2 females from Caulophyllum thalictroides , 31.vi.1992 (M. Skinner) ; Massachusetts, Sherborn , holotype female of frosti , 24.iii.1928 (C.A. Frost) ; 1 female from Skunk cabbage, 23.iv.1955 (Chapin) ; New York, 2 females, 1 male from Lilium , 2.viii.1939 (E.P. Imle) ; 1 female from Polygonatum , 6.viii.1930 (J.D. Hood); 2 females from Podophyllum , 30.v.1924 (J.D. Hood); 1 male, 14.x.1930 (E.A. Maynard); 1 female, 27.v.1938 (J.C. Bradley); Washington, 5 females from Trillium , 6.iv.1913 (J.D. Hood) ; Tennessee, 5 females from Trillium (Ainslie) , 1 female, xi.2001 .

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.

FIGURES 53–62. Ctenothrips. (53) bridwelli (Holotype of frosti). 54–59 kwanzanensis: (54) paratype female of taibaishanensis; (55) paratype male of taibaishanensis; (56) paratype of leionotus; (57) paratype of cornipennis; (58) paratype of guizhouensis; (59) paratype of nonnae. (60) transeolineae. 61–62 parisae: (61) female; (62) male.