Nesothrips barrowi, Eow, 2014

Eow, Li-Xin, 2014, Australian species of spore-feeding Thysanoptera in the genera Carientothrips and Nesothrips (Thysanoptera: Idolothripinae), Zootaxa 3821 (2), pp. 193-221 : 215

Nesothrips barrowi sp.n.

( Figs 49 , 60 , 65 )

Female aptera. Body and legs uniformly brown, abdomen darker toward apex, tube dark brown; antennal segments uniformly brown, III with pedicel yellow; major setae pale.

Head longer than wide, not projecting in front of eyes, cheeks sinuate, vertex without sculpture except near margins ( Fig. 49 ); ocelli absent; postocellar and postocular setae well developed, acute; compound eyes with about 20 ommatidia, smaller ventrally; maxillary stylets wide V-shaped, not retracted as deeply as postocular setae ( Fig. 49 ); maxillary palp segment I about as long as wide, segment II about 3 times as long as I, without transverse lines, terminal sensorium setaceous. Antennal segment III elongate, sensoria relatively short, VIII slightly constricted at base ( Fig. 60 ). Pronotum transverse, weakly reticulate near margins, notopleural sutures complete; with 3 pairs of long, stout, acute major setae, am and aa small; mesopresternum crescent-shaped, posterior margin curved; mesoeusternal anterior margin incomplete medially; metathoracic sternopleural sutures absent. Meso and metanotum reticulate, fore wing lobe not developed. Metanotal median setae small and acute, widely spaced. Pelta broadly triangular, extending less than 80% across anterior border of tergite II ( Fig. 65 ); tergites with no wing retaining setae, median transverse row of 8–10 small discal setae; tergite IX setae acute, longer than tube, tube shorter than head.

Measurements (holotype female in microns). Body length 3250. Head, length 360; width 260; postocellar setae 60; po setae 130. Pronotum, length 195; width 330; major setae am 20, aa 15, ml 70, epim 150, pa?. Tergite IX setae S1 370, S2 330. Tube length 280. Antennal segments III–VIII length 150, 125, 115, 100, 55, 35.

Specimens studied. Holotype female. Western Australia, Barrow Island , iv.2005 (Jonathan Majer)

Comments. This species is very similar to badius in structure but is much larger, with an unusually large head, the third antennal segment elongate and the mesoeusternal anterior margin discontinuous medially. The absence of metathoracic sternopleural sutures is a character state shared with badius as well as with oahuensis , the type species of Nesothrips .

Figures

FIGURES 47–55. Nesothrips species. Head: (47) lativentris, (48) badius, (49) barrowi, (50) coorongi, (51) propinquus, (52) minor major male, (53) carveri, (54) brigalowi, (55) rossi.

FIGURES 56–61. Nesothrips species. Maxillary palps: (56) badius. Eye ventral surface: (57) propinquus. Antennal segments III–VIII: (58) yanchepi, (59) badius, (60) barrowi. Antennal segments II–VIII: (61) carveri.

FIGURES 62–68. Nesothrips species. Thoracic features and pelta: (62) coorongi, (63) rossi, (64) brigalowi, (65) barrowi. Pelta: (66) hemidiscus. Pronotum: (67) capricornis. Maxillary palps and mesopresternum: (68) propinquus.