BAGNALL'S THYSANOPTERA 121 



Hoplandrothrips hystrix Bagnall 



(Text-fig. 52) 



Hoplandrothrips hystrix Bagnall, ig2gd : 74—75. 



This species resembles marshalli Karny and ugandensis Priesner in having the 

 pronotal anteromarginal setae reduced and the antero-angulars very long, arising at 

 some distance from the pronotal fore margin. Antennal III is long, more than twice 

 as long as broad. 



Syntypes $. Sierra Leone : Xjala, on Grapefruit bark, 10. iv. 1927 (E. 

 Hargr eaves) . 



Hoplandrothrips trybomi (Bagnall) comb. n. 



(Text-fig. 53) 



Cryptothrips trybomi Bagnall, nji.il ; 295. 



The eyes are rather small and the antennae long, but otherwise this species fits well 

 into the genus Hoplandrothrips. The maxillary Stylets are retracted far into the 

 head and lie close together in the mid line. 



Holotype $ (not J). Tanganyika : Moschi, 15.viii.1905 (Katona). 



Hoplandrothrips xanthopoides Bagnall 

 Hoplandrothrips xanthopoides Bagnall, 1917 : 22-23. 



Holotype (J. West Indies : St. Vincent {H. H. Smith). 



HOPLOTHRIPS Amyot & Serville 



Hoplothrips Amyot & Serville, 1843. Type-species Trips corticis De Geer, designated by Karny, 



1912c 

 Hoplothrips Amyot & Serville ; Mound, 1966c : 126-128. 

 Dolerothrips Bagnall, icjiod : 682-683. Type-species D. flavipes, by original designation. 



Bagnall described nine species under Dolerothrips and two under Trichothrips from 

 the Hawaiian Islands, but these species are in need of further study and comparison 

 with fresh material. The original specimens are fragmentary, and since the time of 

 their description, studies on European and North American members of the genus 

 have shown that species can vary considerably depending on the season and degree of 

 wing development. H. flavipes is probably distinct, but barbatus is an oedymerous 

 male and probably belongs with one of the other forms. H. perkinsi and laticornis 

 differ from the other species in not having the base of antennals IV and V yellow. 

 However the length of the abdominal setae is of doubtful value on the available 

 material. The species were described from carded specimens which have now been 

 mounted on slides, and further study suggests that certain setae are not ' obsolete ' 

 as described but broken. All the specimens have minor anteromarginal pronotal 

 setae, and the antero-angulars are short except in two oedymerous males. 



