62 



RICHAED S. BAGNALL. 



hind tarsus furnished with more than usually stout setae. Wings fully developed, 

 pointed apically. Fore wing about 14 times as long as wide across middle ; veins 

 indistinct ; costa with 28 setae ; lower-vein with 11-14, finishing just beyond the 

 brown area, and the distal half of upper- vein with 1+1 setae near end, occupying 

 the distal eighth or thereabouts ; setae fairly long and moderately stout ; cilia 

 inclined to be sparse, lower fringe long, waved ; median vein of hind wing very 

 distinct, reaching almost to tip ; brown. 



Abdomen elongate-ovate, widest at about segment 4, slightly wider than ptero- 

 thorax ; segment 9 not much longer than 10 (1'2 to 1'3 times as long) with a pair 

 of dorsal setae. Terminal setae rather long and stout. Posterior margin of tergite 



Fig. 1. Physothrips setiventris, Bagn , 

 sp. n. : a, head and prothorax of $ ; &, end 

 of abdomen of $, showing specialised 

 spines on tergite 9 ; c, segments 3-8 of 

 antenna of $. 



8 furnished with a longish fringe ; pleurites and intermediate tergites laterally finely 

 striate, the striations being lined with microscopical setae, which show as fringes 

 at the posterior margins. Intermediate sternites furnished with many irregularly 

 placed setae in addition to the usual ones at posterior margins. 



cj. Length, 0'9 to TO mm. 



Colour pale yellow, head as in $ but lighter ; antennae with the two basal joints 

 only lightly tinged with grey, otherwise as in the $. Wings as in 9. Abdomen 

 with segments 8 to 10 dark brown ; 4 to 7 with more or less defined median patch 

 dorsally, increasing in extent posteriorly, with sometimes a scarcely defined patch 

 on either side ; similar dorsal markings on 3, but scarcely noticeable. Eighth 

 tergite with a longish postero-marginal fringe ; pleurites as in $. Tergite 



