The genus Scirtothrips Shull (Insecta, Thysanoptera, Thripidae) and three related genera in Japan Author Masumoto, Masami Author Okajima, Shûji text Zootaxa 2007 1552 1 33 journal article 49300 10.5281/zenodo.178140 f7180371-ce51-411b-aeeb-0b9063e1d569 1175-5326 178140 Drepanothrips reuteri Uzel (Figs. 4–5 ) Drepanothrips reuteri Uzel, 1895 : 213 . Drepanothrips reuteri Uzel ; Mound & Palmer, 1981 a : 473 . (first record from Japan .) Female . Distended body length about 1.1 mm . Body generally yellow to brownish yellow, head brown within ocellar triangle, pronotum pale brown medially, mesonotum and metascutum shaded, abdominal terga III to VIII pale brown in median half; antennal segments I to II yellow, III to VI dark brown; fore wings brown with extreme base barely pale; all legs yellow; prominent body setae pale or slightly shaded. . Drepanothrips reuteri (female). (A) Head & pronotum; (B) Antenna (right); (C) Mesonotum & metascutum. FIGURE 5 . Drepanothrips reuteri . (A) Abdominal tergum VI, left side (female); (B) Abdominal segments IX–X, right side aspect (male). Head 2.1 times as wide as long, distinctly sculptured throughout. Ocellar setae III situated behind fore ocellus (Fig. 4 A). Two pairs of long postocular setae almost as long as ocellar setae III present between compound eyes. Mouth-cone not reaching mesothorax. Antennal segment VI the longest, widest near base and tapering forward apex (Fig. 4 B). Pronotum 1.6 times as wide as long, with about 20 discal setae (including anteromarginals and lateralmarginals) (Fig. 4 A). Metascutum with longitudinal reticulations having internal wrinkles at middle; median pair of setae situated at anterior margin (Fig. 4 C). Fore wings with 27 setae on costal vein, six basal and three distal setae on first vein. Abdominal terga II to VII with posteromarginal microtrichia lateral to B 2 setae ( Fig. 5 A); tergum VIII with B 1 setae slightly longer than distance between their bases, without microtrichia at middle; tergum IX without microtrichia; tergum X without microtrichia; sterna II to VII with discal microtrichial rows lateral to B 2 setae. Ovipositor 1.6 times as long as pronotal median length. Measurements in microns of one female from Honshu. Distended body length 1060 . Head length 58 , width across cheeks 123 ; compound eyes dorsal length 50 , width 40 . Pronotal median length 100 , width 163 ; posteromarginal setae I length 15 , setae II length 23–25 . Metascutal median length 65 , median setae length 20 . Fore wings length 650 , width at middle 40 . Abdominal tergum IX median length 60 ; B 1 setae length 55–58 , B 2 setae length 48–50 , B 3 setae length 39–40 , mid–dorsal setae length 38–40 ; tergum X median length 33 ; B 1 setae length 55–58 , B 2 setae length 53 . Ovipositor length 160 . Antennal segments I to VI length (width) as follows: 23 ( 23 ), 30 ( 30 ), 40 ( 18 ), 33 ( 18 ), 33 ( 18 ), 60 ( 18 ). Male . Distended body length about 0.7 mm . Body colour as in female, drepanae dark ( Fig. 5 B). Measurements in microns of one male from Honshu. Width of head and antenna probably incorrectly as specimens were pressured by cover slip. Distended body length 670 . Head length 63 ?, width across cheeks 128 ?; compound eyes dorsal length 53 ?, width 38 ?. Pronotal median length 78 , width 140 ; posteromarginal setae I length 15 , setae II length 20 . Metascutal median length 53 , median setae length 15 . Fore wings length 480 , width at middle 30 . Antennal segments I to VI length (width) as follows: 18 ( 23 ?), 28 ( 28 ?), 28 ( 19 ?), 25 ( 16 ?), 30 ( 19 ?), 53 ( 19 ?). Specimens examined . Japan , Honshu, Fukushima Pref., Kitashiobara-mura, 1 female on leaves of Lindera praecox [ Lauraceae ], 21 -viii- 2003 , M. Masumoto (TUA); Gunma Pref., Mt. Hotaka (Joshu Hotaka), 1 female from unknown host, 26 -v- 1990 , T. Nonaka (TUA); Ibaraki Pref., Yatabe, 2 males on Morus bombycis [ Moraceae ], 16 -viii- 1987 , M. Miyazaki ( NIAES ); Ibaraki Pref., Yatabe, 1 female , 2 males , on Morus bombycis , 25 -viii- 1987 , M. Miyazaki ( NIAES ). Izu-shotou Isls, Hachijo-jima Is., Minamiasakawa-machi, on undetermined tree leaves, 6 -v- 1993 , T. Nonaka (TUA). Comments . This species is distributed widely in Europe and North America , and is known as a pest of grape in these areas ( Mound et al. , 1976 ; Mound & Palmer, 1981 a ). However, Scirtothrips dorsalis is known as a pest of this crop in Japan .