Insecutor Inscitiae Menstruus 



Vol. IV APRIL-JUNE, 1916 Nos. 4-6 



A SYNOPSIS OF THE GENUS OXYTHRIPS UZEL 



(Thysanoptera) 



By J. DOUGLAS HOOD 



By way of introduction to this brief review of our present 

 knowledge of a small genus of Thysanoptera, the writer 

 wishes to express his deep obligations to Mr. C. B. Wil- 

 liams, of Merton, England, for his assistance in sending 

 European material for study. 



Genus OXYTHRIPS Uzel. 1895 



1895. Oxythrips Uzel, Monogr. d. Ordn. Thys., p. 133. 



1899. Oxythrips, Reuter, Acta Soc. Fauna Flora Fennica, Vol. 



XVII, No 2, pp. 37, 46. 

 1911. Oxythrips, Bagnall, Journ. Econ. Biol., Vol. VI, pp. 4, 10. 



Type: Oxythrips ajugce Uzel, by present designation. 



Dr. Karny has expressed the opinion ^ that this genus, as 

 at present defined, may really comprise two distinct genera, 

 whose separation might be based upon the number of promi- 

 nent bristles borne on the posterior angles of the prothorax, 

 a character used by Uzel as long ago as 1895 for his primary 

 division of the genus. In the key below the writer has pre- 

 ferred to treat them, at least for the present, as subgenera 

 only. 



Key to the known species of Oxythrips 



L Posterior angles of prothorax with one pair of long bristles, 



(Subgenus Oxythrips in sp.) 



a. Tenth abdominal segment fully twice as long as segment 9, 



almost cylindrical bicolor (Reuter) 



»Zool. Anz., Vol. XI^III, 1913, p. 136. 37 



