Key to Allothrips species from Southeast Asia [* Based on original descriptions] 1. Head laterally with many small capitate setae (Fig. 7) [USA, Taiwan]................................... nubillicauda -. Head laterally with small acutely pointed setae (Fig. 8)....................................................... 2 2. Head uniformly covered with strong reticulate sculpture; abdominal segments II–VIII brown but head, thorax and abdominal segments IX–X yellow [Taiwan].................................................................. taiwanus * -. No more than posterior third of head with reticulate sculpture; body colour different................................ 3 3. Head with mid-dorsal setae arising on posterior half of head, far posterior to postocular setae, and usually capitate........ 4 -. Head with mid-dorsal setae arising on anterior half of head, between or a little posterior to a line joining the bases of the postocular setae, usually small and acute (Figs 1, 8)............................................................. 5 4. Postocular setae longer than dorsal length of compound eyes; mid-dorsal head setae small and acute; antennal segments II–III each with 2 capitate setae [Thailand]................................................................ magnus * -. Postocular setae shorter than dorsal length of compound eyes; mid-dorsal setae strong and capitate; antennal segments II–IV each with 2 capitate setae [Thailand]............................................................... expansus * 5. Head with lateral postocular setae capitate (Fig. 8); mesonotum of apterae with three pairs of capitate setae, two laterally and one sub-median; pelta anterior third with no sculpture; tergite IX setae S2 as capitate as setae S1; tube less than 1.8 times as long as basal width; tergite IX almost as brown as VIII; legs yellow but femora washed with light brown [Brazil, Hawaii, Japan]............................................................................................. brasilianus - Head with lateral postocular setae pointed (Fig. 1); mesonotum of apterae usually with only the lateral pairs of setae capitate; pelta anterior third reticulate (Fig. 3); tergite IX setae S2 bluntly pointed to weakly capitate, in contrast to strongly capitate setae S1; tube 2.0 times as long as basal width; tergite IX yellow in contrast to VIII (Fig. 4); legs uniformly light brown [Yunnan]....................................................................................... yunnanensis sp.n.

Published as part of Mound, Laurence, Li, Yajin & Zhang, Hongrui, 2020, Species of the genus Allothrips (Thysanoptera, Idolothripinae) from Southeast Asia, with one new species from Yunnan, China, pp. 593-595 in Zootaxa 4732 (4) on page 593, DOI: 10.11646/zootaxa.4732.4.10, http://zenodo.org/record/3667312