BAGNALLS THYSANOPTERA 133 



Liothrips reuteri (Bagnall) 



Compsothrips reuteri Bagnall, igi3f : 295. 

 Liothrips reuteri (Bagnall) ; Priesner, 1964 : 190. 



Holotype $. Egypt : Suez, 4.viii.i902 {Biro). 



Liothrips similis Bagnall 



(Text-fig. 69) 



Liothrips similis Bagnall, 1910a : 383-384. 



The two species elongatus and intermedins which were described with similis are 

 now placed in Trybomia. However similis appears to be a true Liothrips although 

 the metanotum is broadly reticulate and seta Bi on tergite IX is longer than the tube. 



Holotype $. Venezuela : Los Adjuntas, 10.ix.1891 (Meinert). 



Liothrips willcocksi (Bagnall) 



Gynaikothrips willcocksi Bagnall, 1921c : 364. 



Liothrips (Epiliothrips) willcocksi (Bagnall) Priesner, 1965 : 396-398. 



This species is of interest in the Liothrips group in having a fore tarsal tooth in the 

 male. 



Holotype $. Egypt : Ezbst el Nakhl (F. C. Willcocks). 



MACHATOTHRIPS Bagnall 



Machatothrips Bagnall, 1908c : 189. Type-species M. biuncinatus, by monotypy. 

 Adiaphorothrips Bagnall, 1909J : 536-537. Type-species A. simplex, by monotypy. 



There are more than thirty five nominal species in this genus at present, but this 

 figure is likely to be reduced when more of the type specimens are re-examined and 

 compared with biuncinatus. The genus may be defined as follows. 



Large dark species ; head about two thirds as wide as long, weakly constricted basally and 

 behind eyes ; interocellar setae long, sometimes two pairs of postoculars ; cheeks with several 

 pairs of stout setae ; eyes not large ; antennae eight-segmented, III with two sense cones ; 

 maxillary stylets broad, V shaped within head, mouth cone acute. Prothorax broad ; praepectus 

 present ; mesopraesternum sexually dimorphic, anterior margin of mesosternum much narrower 

 in male than in female (cf. Isopterothrips). Fore tarsus armed, tooth larger in male than in 

 female ; fore femur with a row of tubercles on inner margin in female. Fore wing parallel- 

 sided, narrowed in apical third ; numerous accessory cilia. Metanotum reticulate. Pelta 

 broad ; abdominal tergites each with only one wing retaining seta ; setae on tergite IX almost 

 as long as tube. 



The four species of this genus known to the present author may be distinguished 

 as follows : 



1 Fore femur of female with about 20 small tubercles 6/n in length on inner margin ; 



mid-dorsal setae of head less than one quarter as long as postocular setae antennatus 



