Rhamphothrips yunnanensis, Li & Liu & Zhang, 2021

Li, Yajin, Liu, Zhuocheng & Zhang, Hongrui, 2021, Rhamphothrips genus-group in China, with description of two new species and two new records (Thysanoptera: Thripidae), Zootaxa 5039 (3), pp. 425-432 : 430-431

Rhamphothrips yunnanensis sp.n.

( Figs 13–21 )

Female macroptera. Body almost yellow, but distal half of abdominal segment X brown ( Figs 13, 15 ); antennal segments I–III yellow, apex of IV & V pale brown, VI–VIII brown ( Fig. 21 ); fore wing including clavus pale; major setae yellow. Head small, with transverse striate sculpture dorsally behind compound eyes; only a single ocellar seta I present, setae II close to compound eyes, setae III near anterior margins of hind ocelli; 2 pairs of postocular setae small ( Fig.16 ). Antennae 8-segmented, segment I without dorso-apical setae, III & IV with sense cone forked ( Fig.21 ).

Pronotum much longer than wide, with surface smooth except for a few faint transverse lines near posterior margin; 6 pairs of posteromarginal setae, one pair of posteroangular setae slightly prominent ( Fig.16 ). Mesonotal anterior campaniform sensilla present, with sculptured transverse lines, median setae situated in front of posterior margin; mesosternum with a long seta at the lateral margins. Metanotal median setae behind anterior margin, CPS present; median area with irregular and narrow longitudinal reticulation but striate laterally ( Fig. 16 ). Fore tibia ventral apical margin with two small tubercles. Fore wing first vein with about 7 setae basally, 3 widely spaced setae on distal half; second vein with 4 setae; clavus with 5 veinal and 1 discal setae. Prosternal basantra weakly sclerotised, ferna curved forwards medially, with barb-like projections near middle; meso- and metafurca without spinula ( Fig. 17 ).

Abdominal tergite I with strong transverse lines; terga II–VIII smooth, posterior margins with broad unlobed craspedum; median setae on II–VIII small, shorter than S2; paired CPS on I–VII close to posterior margin; VIII with paired CPS in the middle of tergite; IX with two pairs of CPS; X with median split incomplete ( Fig. 15 ). Sternites II–VII with broadly lobed craspedum, sternite VII with S1 setae slightly in front of posterior margin and shorter than S2 setae ( Fig. 19 ). Ovipositor long, extending beyond posterior margin of tergite X.

Measurements (holotype female in microns). Body length 1382. Head, length 72; width across eyes 115. Pronotum, length 200; maximum width 173. Fore wing length 727. Antennal length 236; segments III–VIII length 36, 37, 36, 40, 8, 11.

Male macroptera. Body smaller than female, abdominal tergite X brown, anterior half slightly pale; apex of mouth cone and lateral part of thorax slightly brown ( Fig. 14 ). Fore tibia ventral apical margin bearing two small tubercles ( Fig. 20 ). Mesosternum lateral margins with a stout, shaded seta and a long thorn-like seta ( Fig. 17 ). Abdominal tergite I completely sculptured with transverse anastomosing lines, tergites II–VIII laterally with irregular lines; IX with some tubercles; X with irregular reticulate lines; craspedum absent on tergite I, present on tergites II–VI and with complete row of strong teeth, VII–VIII toothed laterally but median area smooth ( Fig. 18 ); sternites without pore plate.

Measurements (Paratype male in microns). Body length 1201. Head length 56; width across cheeks 113. Pronotum, length 186; maximum width 165. Fore wing length 610. Antenna length 232; antennal segments III–VIII length: 34, 38, 40, 38, 6, 12.

Specimens studied. Holotype female, China, Yunnan, Xishuangbanna City, Bubeng County, from Elaeocarpus decipiens [ Elaeocarpaceae ], 24.iii.2021 (Zhuo-cheng Liu).

Paratypes: 3 males same data as holotype . 1male from rubber and 1 male from bamboo, Jinghong City , Nabanhe National Nature Reserve, 10.iii.2017 (Hong-rui Zhang & Ya-jin Li) .

Etymology. The species is named after the place where it was collected.

Comments. This new species is closely related to R. nemunoki , with ocellar setae I represented by a single seta, ocellar setae III at tangent of anterior margin of hind ocelli, prosternal ferna with barb-like projections near middle. However, this new species can be distinguished by the following character states: the pronotum surface is smooth except for a few faint transverse lines near the posterior margin, the fore tibia ventral apical margin has two small tubercles, the end half of abdominal tergite X is dark brown and abdominal tergite II has three lateral marginal setae. It is also similar to aureus with the male mesosternum having a stout, shaded seta at the lateral margins, but in yunnanensis the male has abdominal tergite II with a toothed craspedum and female abdominal sternite VII S1 setae are clearly shorter than setae S2 ( Fig. 19 ).

Figures

FIGURES 13–21. Rhamphothrips yunnanensis sp.n. (13) Female; (14) Male; (15) Female - abdominal tergites VII–X; (16) Head and thorax; (17) Male - pro-, meso- and metasterna; (18) Male - abdominal tergites III–IX; (19) Female - abdominal sternite VII; (20) Male - fore tibia; (21) Antenna.