Leeuwenia Karny

(Figs 70, 128)

Leeuwenia Karny, 1912b: 161 . Type species: Leeuwenia gladiatrix Karny, by monotypy.

This is an Old World genus with most species in tropical Asia. These are leaf-feeding, sometimes gall-inducing, thrips and 27 species are listed in the area between Mauritius, Japan and northern Australia (Mound 2004). Seven species are recorded from China, four from Indonesia and two from the Philippines. Despite the elongate tube, this genus is probably related to Gynaikothrips in the Liothrips- lineage.

Diagnosis: Head longer than wide (Fig. 128); eyes normal, postocular setae developed or reduced; stylets usually retracted to one third of head length, wide apart; antennae 8-segmented, III with 1 sensorium, IV with 2; pronotum usually with 4 pairs of developed setae, am reduced, notopleural sutures incomplete or complete; basantra absent; mesopresternum transverse; sternopleural sutures absent; fore tarsal tooth absent in both sexes; fore wings parallel-sided, without duplicated cilia; pelta trapezoidal or hat-shaped; tergites II–VII with 2 pairs of fan-shaped wing-retaining setae; tube very long (Fig. 70), usually more than twice as long as head, with fine or robust setae on surface, anal setae short; male sternite VIII with or without pore plate.