42 L. A. MOUND 



Isochaetothrips seticollis (Bagnall) 



Taeniothrips seticollis Bagnall, 1915b : 591-592. 

 Isochaetothrips seticollis (Bagnall) ; Moulton, 1928a : 227. 



This species, described on a single female, was designated as the type of Iso- 

 chaetothrips by Moulton. The first pair of ocellar setae are absent, and pair III lie 

 on the anterior margins of the ocellar triangle. The metanotum is longitudinally 

 striate and both pairs of setae are on the anterior margin. The tergites are devoid 

 of sculpture medially, the eighth tergal comb is rather coarse, and the sternites are 

 without accessory setae. 



Holotype $. Western Australia : nr. Perth, Mundaring Weir, flowers of 

 small Acacia, 3.viii.i9i4 (E. B. Poulton). 



Isochaetothrips setipennis (Bagnall) 



Physothvips setipennis Bagnall, 1916b : 399. 

 Physothrips ignobilis Bagnall, 1926c : 101-102. Syn. n. 

 Physothvips myrsiniicola Bagnall, 1926c : 103. Syn. n. 



This can be distinguished from seticollis by the more numerous pronotal setae, the 

 longer and finer microtrichia of the comb on tergite eight, and the median pair of 

 metanotal setae which are posterior to the lateral pair. The species ignobilis, based 

 on two females, is here regarded as a small form of setipennis, and myrsiniicola, which 

 was based on a single male, cannot be distinguished from males of setipennis except 

 that one seta is not developed in the row of setae on the first vein of one fore wing. 



LECTOTYPE $. Australia : Victoria, Healesville, on cultivated white briar, 

 25.1.1914 (R. Kelly). 



LECTOTYPE $ of ignobilis. Australia : Victoria, Warburton, Myrsine varia- 

 bilis, 17.1.1926 (R. Kelly). 



Holotype <$ of myrsiniicola. Australia : Victoria, Warburton, Myrsine varia- 

 bilis, 17.1.1926 (R. Kelly). 



ISO NE UR O THRIPS Bagnall 

 Isoneurothrips Bagnall, 1915b : 592. Type-species /. australis, by monotypy. 



Isoneurothrips australis Bagnall 

 Isoneurothrips australis Bagnall, 1915b : 592-593. 



Although described originally from Western Australia, australis has since been 

 recorded from many subtropical areas. The density of the abdominal pigmentation 

 is quite variable. 



LECTOTYPE $. Western Australia : Perth, Mundaring Weir, Acacia 

 flowers, 3.viii.i9i4 (E. B. Poulton no. 16). 



