Female macropterous or apterous; body color dark brown, including antennae; apex of antennomere II and base of III yellowish; wings pale, with a dark median line, parallel to anterior and posterior borders. Antennae 8-segmented, antennomere III with 2 and IV with 4 sense cones. Head longer than wide, with pairs of long preocellar and postocular setae, and multiple short but stout setae dorsally and laterally; lateral margins parallel; maxillary stylets parallel, about 1/4 to 1/3 of head width apart, extending towards middle of head. Pronotum with 5 pairs of setae, but only epimeral and posteroangular pairs are elongate; prosternal basantra present. Metanotum reticulate, with one pair of median setae. Metathoracic sternopleural sutures absent. Pelta D-shaped and covered by reticulation, without lateral wings; abdominal tergites reticulated, II–VII with 1 pair of straight wing-retaining setae. Tube cone-shaped, strongly tapering to the apex, a little less than 2x as long as basal width. Fore legs slightly enlarged, fore tarsi with a tooth. Fore wings with about 34 duplicated cilia.
Male not studied.
Intraspecific variation
Unknown.
Genus and similar species information
Diplacothrips is a genus with only two described species, one from Peru and one from Brazil. Both have a D-shaped pelta, without lateral wings, which is an uncommon shape among Idolothripinae. Besides that, both Diplacothrips species do not have the metathoracic sternopleural sutures and their tube is relatively short, without long setae laterally.
