Apterygothrips Priesner

(Fig. 23)

Apterygothrips Priesner, 1933a: 1 . Type species: Apterygothrips haloxyli Priesner, by monotypy.

There are 40 species included in this genus, of which three are recorded from China, one from the northern Palaearctic area, and two from the South or Southwest. This genus, a member of the Haplothripini, is possibly polyphyletic because it is defined from Haplothrips only on the basis of lack of wings and tergal wing-retaining setae.

Diagnosis: Head longer than wide; eyes normal, or slightly prolonged ventrally, postocular setae welldeveloped; stylets retracted to just behind eyes, about one third of head width apart, maxillary bridge present; antennae 8-segmented, III with 1 or 2 sensoria, IV with 2 or 3; pronotum usually with 5 pairs of developed setae, notopleural sutures complete; basantra present; mesopresternum transverse or eroded medially; sternopleural sutures usually absent, sometimes present (Fig. 23); fore tarsal tooth present or absent; commonly micropterous, macropterae with fore wings weakly constricted medially, without duplicated cilia; pelta trapezoidal or hemicircular; tergites II–VII with 2 pairs of wing-retaining setae in macroptera; tube shorter than head.