BAGN ALL'S TH YS AXOI'TER A 



79 



- Not with the above combination of characters ; posterolateral angles of mesoprae- 



sternum obtuse ............ 2 



2 Postocellar setae shorter than one side of ocellar triangle ..... 3 



- Postocellar setae longer than one side of ocellar triangle ..... 5 



3 Fore wing with less than 20 accessory cilia ; pronotal anteromarginal setae about 



half as long as antero-angulars or less ; tube sculptured 



rnadagascariensis (and vitreipennis) 



- Fore wing with about 30 accessory cilia ........ 4 



4 Tube strongly sculpture ; pelta with slender Literal lobes . . • . . . brevis 



- Tube apparently straight-sided, without sculpture ; pelta broad not trilobed 



angusticornis 



5 Antennae quite dark, segment IV with five sense cones 



- At least antennal III yellowish ....... 



6 Seta Bj on tergite IX about half as long as tube .... 



- Seta Bj on tergite as long as tube ...... 



7 Fore tibiae as dark as fore femora ...... 



- Fore tibiae paler than tore femora ...... 



8 Fore tarsal claw absent in female ...... 



- Fore tarsal claw present in female ...... 



9 Antennal IV yellow, sense cones about half as long as segment V . 



- Antennal IV brown distally, sensoria shorter .... 



10 Fore wing with about 30 accessory cilia ; sense cones on antennals 



about half as long as these segments ..... 



- Fore wing with less than 20 accessory cilia ..... 



11 Tube with straight sides, not sculptured ..... 



- Tube constricted apically, sculptured as in brevis .... 



intrepidus 



7 

 brevicornis 

 thomasseti 



9 

 10 

 difficilis 

 seychellensis 

 II and IV 



indicus 



11 



karnyi 



beesoni 



Diceratothrips angusticornis (Bagnall) comb. n. 



Mesothrips angusticornis Bagnall, 1924k : 638-639. 



This species resembles karnyi in that the tube has straight sides, but the post- 

 ocellar setae are short and the pelta is not trilobed. 



Holotype J. Ceylon : Peradeniya, swept from bushes (E. E. Green). 



Diceratothrips armatus Bagnall 

 (Text-figs. 25, 34) 



Diceratothrips armatus Bagnall, 1910a : 385-386. 



Bagnall made no attempt to compare this species with the type of the genus. 

 Stannard (1957 : 96) indicates that individuals vary in armature depending on size 

 in this genus, and so Bagnall's reference to ' the strongly characterized fore legs ' 

 may be of little value. The species is very close to bicornis but appears to have less 

 strongly contrasting dark and light areas on the fore wing, and rather weaker antero- 

 angular pronotal setae. 



Syntypes $ and $. Venezuela : La Moka, iii.1891 (Meinert). 



