NEW GENERA AND SPECIES OF THYSANOPTERA, WT:TH 

 NOTES ON DISTRIBUTION AND FOOD PLANTS. 



By A, C, Morgan, 



Of the Bureau of Entomology, United States Department of Agriculture. 



INTRODUCTION. 



The facts upon which this paper is based are the outgrowth of 

 occasional work, during the past four years, upon the food plants 

 and distribution of the tobacco thrips, Euthrips fuscus Hinds. Dur- 

 ing this work several new forms were either collected or received from 

 other collectors, and information was obtamed which greatly extends 

 the range of several of our already described species. Because of the 

 increasing economic importance of the order it is thought advisable 

 to place the accumulated facts on record for the use of other work- 

 ers. In all, 3 new genera, 19 new species, 1 European form now first 

 recorded for America, and 1 new variety, are added to our fauna. 

 One species is placed in synonymy, and the males of 2 other species 

 are here recorded for the first time. New locality records are given 

 for 38 species, and new food plants recorded for many of them. 



Although there is considerable doubt of the validity of the use of 

 the genus Euthrips to contain such widely different forms as Euthrips 

 ulicis californicus Moulton, E. phalerata Haliday, E. pyri Daniel, and 

 E. tritici Fitch, the writer has refrained for the present from a 

 revision of the genus, and has used it in the broad sense ascribed 

 to it by Hinds. An examination of certain European species should 

 be made the basis for the revision, and it is my hope that Mr. 

 Richard S. Bagnall will do this in his treatise upon Thysanoptera, 

 which he is preparing for the Genera Insectorum. 



EUTHRIPS PHALERATA Haliday (Redescrlption). 



Figs. 1-4. 



Female. — Length about 1.3 mm. Width 0.16 to 0.17 mm. Gen- 

 eral color yellowish brown. 



Head about one and one-half times as broad as long, slightly 

 retracted within the pro thorax ; diverging slightly posteriorly, cheeks 

 slightly roughened; dorsum very distinctly transversely striated 



Proceedings U. S. National Museum, Vol. 46— No. 2008. 

 95278°— Proc.N.M.vol.46— 13 1 



