Horistothrips

Mound, Laurence A., 2008, Identification and host associations of some Thysanoptera Phlaeothripinae described from Australia pre- 1930, Zootaxa 1714, pp. 41-60 : 43

Key to Horistothrips species

1. Pelta occupying no more than 60 % of anterior margin of abdominal tergite II ( Fig. 4); postocular setae about 1.5 times as long as width of antennal segment II; male glandular area transverse across sternite VIII ............................................................................................................................................... australiae

-. Pelta occupying more than 80 % of anterior margin of abdominal tergite II ( Fig. 8); postocular setae scarcely 1.2 times as long as width of antennal segment II; male glandular area on sternite VIII transversely oval ................................................................................................................................. platygaster