Leucothrips

Body length about 1.0–1.5 mm. Body and legs uniformly white; fore wing dark brown. Head almost smooth, weakly sculptured behind ocellar triangle. One pair of anteocellar setae; pair I absent; pair II small and lateral to fore ocellus; pair III in front of hind ocelli, just outside ocellar triangle; postocular setae absent. Antenna 7- or 8-segmented; segment I without dorsal apical median setae; segments III and IV with forked sensoria; segments III–VI with microtrichia on both surfaces; segment VII with ventral sensorium exceeding apex. Pronotum transverse, with transverse internal ridge at middle, densely sculptured with transverse anastomosing lines; posterior margin with 7–8 setae. Mesonotum with transverse internal ridge, smooth anterior to ridge, densely sculptured with transverse anastomosing lines posteriorly. Metascutum sculptured with closely spaced longitudinal striae. Fore wing first vein with about seven scattered setae; second vein without setae. Hind tibia ventrally with two apical spine-like setae; hind tarsi about 0.3 times as long as hind tibia. Abdominal tergites with S1 setae close together, much longer than their interval; S2 setae slightly sinuate; tergites II–VIII with anastomosing transverse striae having small microtrichia lateral to S2 setae, smooth medially; tergite IX with microtrichia on posterior third; tergite X with microtrichia on posterior half. Sternites without discal setae; sternites III–VII with three pairs of posteromarginal setae; sternite II with two pairs; sternite VII with S1 and S2 setae in front of posterior margin. Male similar to female but antennal sensoria simple.

Literature