Thrips arorai Bhatti, 1980 : 124

Tyagi, Kaomud & Kumar, Vikas, 2015, Thrips arorai Bhatti (Thysanoptera, Thripidae): first description of the male, Zootaxa 3904 (1), pp. 144-146 : 144-146

Thrips arorai Bhatti, 1980: 124

( Figs 1–13 )

Male macroptera. Body bicoloured; head, thorax and abdominal segments I–III and VII–X dark brown including legs, abdominal segments IV–VI yellow. Antennal segments I–II and VI–VII dark brown, III yellow, IV yellow with brown shading distally, V yellow on proximal 1/3 and brown on distal 2/3. Fore wing with 2 dark cross bands and 3 clear areas ( Figs 2 , 13 ).

Head longer than broad, cheeks rounded, ocellar seta pair I absent, III longer than II and arising on tangent between outer margins of fore and hind ocelli; postocular setae III smallest. Antenna 7-segmented, III and IV each with forked sense cones. Pronotum with transverse lines of sculpture; two pairs of well-developed posteroangular setae; three pairs of posteromarginal setae, median pair longer than submedian ( Fig. 4 ). Mesonotum with anteromedian campaniform sensilla and transverse anastomosing sculpture lines. Metanotum with longitudinally reticulate sculpture in middle, median pair of setae far behind anterior margin; distance between median pair of metanotal setae less than distance between median and submedian; campaniform sensilla present ( Fig. 11 ). Fore wing costa with 21–26 setae, first vein with 7 basal and 2 to 4 distal setae, second vein with 8–12 setae; clavus with 5+1 setae ( Fig. 13 ). Abdominal tergites IV to VIII with paired ctenidia, posteromesad of spiracles on VIII; tergite II with 4 lateral marginal setae ( Fig. 10 ); posterior margin of abdominal tergite VIII without comb; S1 setae on tergite IX almost as long as S2 and equidistant from each other ( Fig. 12 ). Abdominal sternites II–VIII with discal setae; pleurotergite II with one discal seta, absent on other pleurotergites ( Fig. 10 ); sternites III–VII each with oval pore plate ( Fig. 5 ). Phallus not elongate, shape similar to that of T. palmi ( Figs 8–9 ).

Measurements in microns. Distended body length 1150. Head, length 109; width behind eyes 106; width across cheeks 116; compound eye dorsal length 54, width 40. Pronotal median length 104, width 140; posteroangular setae I (inner pair) 27–28, setae II (outer pair) length 29–33; posteromarginal setae I length 25. Fore wing length 690, width at middle 70. Abdominal tergite IX S1 setae length 42–43, S2 setae length 40–42. Antennal segments I–VII length (width) as follows: 22 (24), 34 (23), 55 (20), 49 (18), 37 (17), 44 (18), 16 (7). L(W) of pore plates on abdominal sternites III–VII 25 (15), 24(14), 18(12), 17(12), 16(14).

Female macroptera. Body dark brown including legs. Antenna, fore wing colour and head chaetotaxy similar to male ( Figs. 1 , 3 ). Distance between median pair of metanotal setae more than the distance between median and submedian ( Fig. 6 ). Fore wing costa with 24–30 setae, first vein with 7 basal and 2 to 3 distal setae, second vein with 10–15 setae; clavus with 5+1 setae. Abdominal sternites II–VII with discal setae; all pleurotergites without discal setae ( Fig. 9 ); posterior margin of abdominal tergite VIII with complete comb.

Material studied. INDIA, Himachal Pradesh, Shimla (Munderhat), on fern, 20 females, 25 males (31º05'83.0" N 077º27'18.7'E, 2207 m), 12.vi.2014, Kumar, Tyagi and Ghosh. All specimens are deposited in the National Zoological Collections (NZC), Zoological Survey of India, Kolkata, India.

Figures

FIGURES 1 – 2. Thrips arorai. (1) Female; (2) Male.

FIGURES 3 – 13. Thrips arorai. (3) Head & pronotum, female; (4) Head & pronotum, male; (5) Sternites III – VII, male; (6) Meso-metanota, female; (7) genitalia, male; (8) Paramere, lateral, male; (9) Tergite & pleurotergite II, female; (10) Tergite & pleurotergite II, male; (11) Meso-metanota, male; (12) Tergites IX – X, male; (13) Fore wing, male.