Key to species of the Thrips formosanus group

(based on descriptions)

1. Body bicoloured; tergite IX with one pair of campaniform sensilla.......................................... hoddlei

-. Body brown; tergite IX with two pairs of campaniform sensilla................................................. 2

2. Ocellar III either inside or at the tangent of outer margin of the ocellar triangle; tergite II with 4 lateral marginal setae...... 3

-. Ocellar III outside the ocellar triangle; tergite II with 3 lateral marginal setae...................................... 6

3. Antennal segment III entirely yellow or yellow at base........................................................ 4

-. Antennal segment III dark brown........................................................................ 5

4. Postocular I shorter than ocellar III; antennal segment III yellow at base, IV and V dark brown............... formosanus

-. Postocular I longer than ocellar III; antennal segment III yellow, IV and V dark brown with yellow extreme base.... floreus

5. Fore tibiae and tarsi completely dark; fore wing dark................................................. obscuripes

-. Fore tibiae and tarsi pale; fore wing dark with basal quarter pale........................................... tanicus

6. Metanotal campaniform sensilla absent; antennal segment III dark brown; fore wing and legs completely dark.... rostratus

-. Metanotal campaniform sensilla present; antennal segment III yellowish brown; fore wing pale in proximal ¼; all femora dark brown with yellow apices, all tibiae and tarsi yellowish brown....................................... moundi sp.n.