Thysanoptera of the genus Dichromothrips on Old World Orchidaceae

Species of Dichromothrips are shown to be widespread on Orchidaceae in the Old World Tropics from Africa to New Zealand. The centre of diversity appears to be the Malaysian Region but this may be an artefact resulting from poor collections. The genus is redefined, its relationships discussed and a key provided to the 14 species australiae sp. nov., borneensis (Pr.); corbetti (Pr.); dendrobii Saki.; indicus sp. nov.; maori sp. nov._; nakahari sp. nov._; nigeriae sp. nov.; orchidis Pr.; phalaenopsidis Saki. (= sakimurai Bhatti syn.nov.); priesneri (Hood); semicognitus Saki.; smithi (Zimm.)j via torus sp. nov.|. Eugeneothrips Hood is synonymised with Dichromothrips.