Key to Indian species of Lefroyothrips (* From original description)

1. Ocellar setae pair III at least 2.0 times as long as distance between hind ocelli............................. obscurus *

-. Ocellar setae pair III shorter than distance between hind ocelli.................................................. 2

2. Ocellar setae pair III and postocular setae I subequal, positioned close to hind ocelli on the tangent between the fore and hind ocelli; postocular setae in two rows................................................................... lefroyi

-. Ocellar setae pair III twice the length of postocular setae I, arising almost at centre of tangent between fore and hind ocelli; postocular setae in a single row........................................................... varatharajani sp.n.