Scolothrips Hind

Masumoto, Masami, Ohno, Suguru, Ganaha-Kikumura, Tomoko, Miyagi, Akiko & Okajima, Shûji, 2012, Review of the genus Scolothrips (Insecta, Thysanoptera, Thripidae) from Japan, Zootaxa 3183 (1), pp. 36-48 : 37

publication ID	https://doi.org/ 10.11646/zootaxa.3183.1.2
DOI	https://doi.org/10.5281/zenodo.5873168
persistent identifier	https://treatment.plazi.org/id/18061D43-2463-FFA7-FF34-5DF4FE45F860
treatment provided by	Plazi
scientific name	Scolothrips Hind
status

Treatment

Genus Scolothrips Hind View in CoL

Scolothrips Hinds, 1902: 157 View in CoL . Type species: Thrips sexmaculata Pergande, 1890 , by original designation and monotypy.

Female. Body small and fragile. Wings present. Major body setae with surfaces rough. Head ( Fig. 1 View FIGURE 1 A) wider than long, humped at ocellar triangle, cheeks rounded; mouth-cone not elongate and more or less pointed at apex, with 3-segmented maxillary palpi. Compound eyes very large and bulging, with four large strongly pigmented (and often several normal sized weakly pigmented) ommatidia ventrally. Ocellar setae I and II (=anteocellar setae) present, rarely absent, usually elongate nearly half length of setae III (=interocellar setae), setae III almost as long as head length. Postocular setae four pairs, rarely absent. Antennae ( Fig. 1 View FIGURE 1 B) 8- segmented, segment I without median dorsal apical setae, II with dorsal inner setae much longer than outer one, III and IV with sensoria forked, microtrichial rows present or absent.

Pronotum ( Fig. 1 View FIGURE 1 A) wider than long; usually six pairs of very long setae (anteromarginals, anteroangulars, posteromarginals and MLs each 1 pair, posteroangulars 2 pairs) present, but rarely MLs small. Mesonotum ( Fig. 5 View FIGURE 5 B) with median pair of setae situated far from posterior margin. Metascutum ( Fig. 1 View FIGURE 1 C) with median pair of setae situated at or near anterior margin; CPS absent. Prosternal ferna ( Fig. 1 View FIGURE 1 D) divided at middle; basantra membranous, often with one or two setae; prospinasternum ( Fig. 1 View FIGURE 1 D) weak, narrow and curved directed posteriorly at middle or median triangle plate. Mesosternum without or with indistinct sternopleural sutures; endofurca with spinula. Metasternal endofurca with spinula. Fore wing ( Fig. 2 View FIGURE 2 A) with two dark bands and with much elongate veinal setae, costal setae longer than anteromarginal fringe hairs; first vein without long gap in setal row, interval irregularly spaced, first vein slightly curved backward near the veinal fork ( Fig. 6 View FIGURE 6 B); second vein with 4 or 5 (rarely 6−8) setae evenly spaced; clavus usually with 3 (rarely 4) veinal and one discal setae; posteromarginal fringe cilia undulated. Tarsi 2-segmented.

Abdominal tergites ( Figs. 4 View FIGURE 4 B-C) without ctenidia and posteromarginal craspeda, indistinctly divided from laterotergites, tergal discal setae small; tergite VIII without posteromarginal comb; tergite X ( Fig. 4 View FIGURE 4 C) without longitudinal median split; sternites without posteromarginal craspeda and discal setae; sternites III −VII with three pairs of posteromarginal setae, but II with two pairs; sternite VII with S1 setae in front of posterior margin. Ovipositor developed.

Male. General body structure as in female but sometime micropterous. Abdominal tergite X without longitudinal median split; sternites ( Fig. 2 View FIGURE 2 F) III −VIII each with a large transverse pore plate constricted at middle.

Comments. Within the genus Scolothrips, Mound (2011) recognized two species groups each of three nominal species that cannot be distinguished satisfactorily from each other. The Old World longicornis group includes dilongicornis Han & Zhang and takahasii Priesner, and the North American sexmaculatus group includes hoodi Priesner and pallidus Beach.