BAGNALL'S THYSANOPTERA 69 



noted that the praepectus is apparently absent, the maxillary stylets broad and V- 

 shaped within the head, and the apex of the tube strongly constricted. Stannard 

 (1957) indicates that the genus is probably related to Pygothrips and Nesothrips. 



Acallurothrips macrurus Bagnall 



Acallurothrips macrurus Bagnall, 1921b : 270-271. 



The antennae are seriously damaged but the suture between segments VII and 

 VIII is probably incomplete. The sense cones are long and slender, two on III and 

 three on IV. The fore tarsi are short with a stout tooth laterally and apical claw, 

 the mesonotum weakly sculptured but the pelta strongly reticulate and moderately 

 wide. 



Holotype $. Seychelles : Mahe\ [Mt. Sebert, 2,000 ft., 1908-09 (H. Scott)]. 



Acallurothrips proturus Bagnall 



Acallurothrips proturus Bagnall, 1921b : 269-270. 



The fore tarsus bears a stout apical claw but the lateral tooth appears to have been 

 broken. 



Holotype $. Seychelles : Silhouette, [Mare aux Cochons, 1,000 ft., ix.1908 

 {H. Scott)]. 



Acanthothrips nodicornis (Reuter) 



Phloeothrips nodicornis Reuter, 1880 : 16. 

 Acanthothrips americanus Bagnall, 1933b : 123. 



Bagnall described americanus from two specimens from North America, in which 

 the hind tibiae are scarcely paler at their extremities than they are medially. In 

 typical specimens of nodicornis the hind tibiae are yellow at base and apex. The 

 genus Acanthothrips has been used as a subgenus of Phlaeothrips by some authors 

 but can be distinguished by ; (1) antennal IV bears three sense cones and the apex 

 of the segment is prolonged beyond the base of these cones ; (2) the meso- and 

 metanota and sometimes the pronotum are heavily sculptured. The present author 

 has examined albivittatus Hd. and vittatns Hd., as well as one syntype of albovittatus 

 Schille which should also be included in this genus (comb. n.). 



LECTOTYPE <$ of americanus. Michigan, U.S.A. : Baldwin, on rotting poplar 

 stump, 18.viii.1908 (/. D. Hood). 



ACTINOTHRIPS Bagnall 



Actinothrips Bagnall, 1909k : 332-333. Type-species A. longicornis, by monotypy. 

 Actinothrips Bagnall ; Stannard, 1957 : QO-Q 1 - 



