Both sexes fully winged. Body and legs brown, tarsi yellow; forewings pale at base then dark to apex; antennae brown, segments III–IV yellowish. Head wider than long, with irregular and weakly tuberculate sculpture between ocelli, vertex reticulate; ocellar setae pair III outside ocellar triangle in front of posterior ocelli. Antennae 8-segmented; segments short, III–IV with slender forked sensorium; segment VI short, inner margin with long sensorium arising on distal half. Pronotum transversely reticulate, reticles with internal markings, discal setae minute, posterior margin with no long setae. Metanotum with complex, irregularly linear reticulation, median pair of setae far from anterior margin. Forewing with no prominent setae, wing apex recurved with no stout seta, cilia arise ventrally far behind anterior margin. Tergites with median pair of setae longer than distance between their bases; lateral thirds of tergites with complex transversely reticulate sculpture; posterior margin of VIII with complete comb; tergite X with no longitudinal split.
The Old World genus Dendrothrips currently includes more than 50 described species, mainly from Africa and Asia. The metathoric endofurca is greatly enlarged, "lyre-shaped", extending into the mesothorax, the sides of the metathorax are greatly swollen, the hind coxae are wider than long, the forewing cilia arise ventrally well behind the anterior margin, and the apex of the forewing is recurved without a prominent terminal seta. The form of the wing apex distinguishes the members of this genus from the other species placed in the Dendrothripinae. D. howei is similar to D. glynn in the form of the distal antennal segments, but has the forewing dark apart from a basal pale area.
Known only from Lord Howe Island, Australia
Breeding on leaves
Probably Xylosma maideni (Flacourtiaceae), but adults have also been collected from Malaisia scandens (Moraceae) and Smilax australis (Smilacaceae)