Aeolothrips fasciatus (Linnaeus)

Masumoto, Masami & Okajima, Shûji, 2019, Review of the Aeolothripidae (Thysanoptera) in Japan, Zootaxa 4564 (2), pp. 301-326 : 303-304

Aeolothrips fasciatus (Linnaeus)

( Figs 1, 2 , 15 , 25–33 )

Thrips fasciata Linnaeus, 1758: 457.

Diagnosis. Female macroptera. Body uniformly dark brown ( Fig. 1 ); antennal segments I and IV–IX brown, II brown with apex slightly pale, III yellowish white with brown extreme apex; fore wings with two independent dark bands, apex white, extreme base slightly shaded, vein not shaded on pale area ( Fig. 15 ); all legs dark brown; prominent body setae brown. Head slightly longer than wide, weakly arched at cheeks ( Fig. 25 ). Antennal segment V subequal in length to combined length of VI–IX ( Fig. 26 ). Pronotum with no long and stout setae. Mesonotum with lateral setae much longer and stouter than median pair of setae; anteromedian CPS present ( Fig. 27 ). Metascutum with polygonal reticulations medially; CPS present. Abdominal sternite VII with two pairs of accessory setae much anterior to posterior margin between S1 and S2 setae, interval between S1 setae much wider than interval between S1 and S2 setae ( Fig. 29 ); spermatheca without internal teeth or with a few internal teeth at each side and often also medially ( Fig. 30 ).

Male macroptera. Body smaller and paler than female, pronotum yellowish brown, abdominal segments II–VI paler ( Fig. 2 ). Mid coxae each with transverse ridges and a large tooth-like tubercle ventrally ( Fig. 31 ). Abdominal tergites III–V with paired small posteromarginal tubercles, tubercles vestigial on III ( Fig. 32 ); tergite IX with bifurcate claspers, S1 setae close to each other, and much longer than and much anterior to S2 setae, S3 setae much longer than clasper, ventrolateral setae slender slightly curved ( Fig. 33 ).

Specimens examined. JAPAN: Hokkaido, Hakodate City, 1 female on clover flower, 9.viii.1989, T.Nonaka (TUA); Abashiri City, Misaki, 1 female on Poaceae , 10.viii.2006 (TUA); Rumoi City, Chibaberi, 1 female on flower of Vicia cracca [ Leguminosae ], 18.vii.2006 (TUA); Horonobe-cho, Nishi-toikanbetsu, 1 female on flower of Vicia cracca , 18.vii.2007, all T.Nonaka. Honshu, Aomori Pref., Hachinohe City, 1 female on Artemisia princeps [ Compositae ], 7.viii.1997, T.Tsutsumi (FU). Nagano Pref., Sugadaira: 1 female on Lysmachia, 18.vii.1973, K.Haga (TUA). 1 female on Angelica pubescens [ Apiaceae ], 24.v.1995, T.Tsutsumi (FU). Norikura-kugen, 1 female on Composite flower, 21.viii.2006, M.Masumoto (TUA). Gunma Pref., Katashina-mura (alt. about 1500m), 5 females on flower of Prunella vulgaris asiatica [ Lamiaceae ], 24.viii.2014, M.Masumoto (TUA). Yamanashi Pref., nr. Fujiyoshida, 3 females & 3 males on grass, 30.vii.1981, S.Okajima (TUA). Yamanashi Pref., Kitakoma-gun, Sudama-cho, Kanayama, 1 female & 5 males on grass, 8.vii.1994, S.Okajima (TUA).

Remarks. This species is widespread in the Holarctic region and introduced to Australia and New Zealand. Some European records are probably misidentifications of the European species A. intermedius , this is also true for the Asian species A. mongolicus . Moreover, some North American records are probably A. auricestus ( Hoddle et al. 2012) . In Japanese specimens, the spermatheca has several weak internal teeth, whereas there are no such teeth in European specimens ( Bhatti, 1988; Alavi et al., 2018). Further revisional study is needed for fasciatus . In Japan, A. fasciatus is found on flowers in the northern or mountainous areas. It is probably a facultative predator, feeding on pollen and the larvae of other thrips ( Hoddle et al. 2012).

Figures

FIGURES 1–7. Aeolothrips species. A. fasciatus, 1–2: (1) Female; (2) Male. (3) A. fukushimensis, sp. n., female. A. kurosawai, 4–5: (4) Female; (5) Male. (6) A. luteolus, female; (7) A. melaleucus, female (a: From Honshu; b: holotype of A. concinus).

FIGURES 15–24. Fore wings of Aeolothripidae, female. (15) Aeolothrips fasciatus; (16) A. fukushimensis sp. n.; (17) A. kurosawai; (18) A. luteolus; (19) A. melaleucus from Honshu; (20) A. setosus sp. n.; (21) A. vittatus; (22) Desmidothrips japonicus sp. n. (23) Franklinothrips oblongus sp. n.; (24) F. vespiformis.

FIGURES 25–33. Aeolothrips fasciatus. Female, 25–30: (25) Head & pronotum; (26) Antennal segments III–IX; (27) Mesonotum & metascutum; (28) Fore leg, apex of tibia–tarsus, left; (29) Sternite VII; (30) Spermatheca (a: dorsal aspect, b: slightly dorso-lateral aspect). Male, 31–33: (31) Mid coxa, right; (32) Tergite III–V; (33) Tergite IX (VS: ventral seta).