Key to Pseudodendrothrips species from Australia

1. Abdomen extensively brown............................................................................ 2

-. Abdomen uniformly white with no brown markings......................................................... 3

2. Fore wing uniformly shaded, veinal setae acute; head with ocellar setae pair III stout and longitudinally grooved; antennae 8- segmented [Queensland]............................................................................ alexei

-. Fore wing shaded with pale bands at base, sub-medially and apically, veinal setae short, stout and dark; ocellar setae III finely pointed; antennae 9-segmented [Lord Howe Island].................................................... gillespiei

3. Head and pronotum uniformly pale, with no brown areas................................................... mori

-. Head and pronotum with brown areas.................................................................... 4

4. Head pale with only interantennal projection brown (Fig. 28); pronotum pale with paired sublateral dark markings;..... darci

-. Head more extensively light brown (Figs 29, 30); pronotum light brown but without discrete brown markings; fore wings uni- formly dark with basal fifth sharply pale and apical area variably paler................................ marissae sp.n.