270 Mr. R. S. Bagnall on new Thysanoptera. 



Type, In Coll. Bagnall, University Museum, Oxford. 



Hab. Canada, Semans, Sask. ; 1 ? and 2 $ S on Petcdo- 

 stemon purpureum, 4. viii. 1917 (A. E. Cameron, no. 27). 



Genus Euthrips, Targ-Tozz. 



a. Sixth antennal joint entire. 



Euthrips citricinctus, sp. n. 



Length c. l'O mm. 



Head, pronotum, abdominal segments 1, 2, and 6 to 10 

 deep blackish chestnut-brown ; pterothorax brown, abdo- 

 minal segments 3 to 5 and base of 6 lemon-yellow. Fore- 

 wings tinted light greyish-yellow, basal fourth lighter and a 

 darker ill-defined brown patch in the second fourth. Hind- 

 wing with dark median vein extending into distal fourth. 

 Anterior legs yellow ; intermediate pair of femora yellow 

 faintly shaded with grey-brown (the rest of the middle pair 

 of legs are not present in the type-specimen) ; hind-femora 

 yellow-brown ; tibias yellow tinged with grey to grey-brown. 

 Antennae brown, with joints 3 and 4 light greyish-yellow, 3 

 being lighter than 4, extreme base of 5 yellowish. 



Head 0*9 as long as broad, rounded between eyes ; dorsal 

 surface posteriorly transversely striate. Eyes moderately 

 coarsely facetted ; ocelli rather widely separated, with strong 

 crescentic hypodermal pigmentation ; mouth-cone long. An- 

 tennae about 1*5 or 1*6 times as long as the head. Relative 

 lengths of joints 4 to 8 as follows * :— 10 : 10 : 14 : 3 : 4. 



Pronotum quadrate, as long as the head, slightly broader 

 basally, where it is 0*8 (or more) as broad as long. 



Pterothorax about as long as broad, mesothorax broader 

 than the metathorax. Wings reaching to the eighth abdo- 

 minal segment, fore-wings broad, about fourteen times as 

 long as broad across the middle ; spines very minute, 8 or 9 

 on the upper and 8 on the lower vein ; lower fringes of all 

 wings wavy. 



Abdomen elongate-ovate, distally obconical. Tergite 8 

 with a fringe on posterior margin; the lateral setre each on a 

 broad triangular base. Segment 10 open dorsally. Apical 

 bristles fairly long, dark. 



This species very closely approaches Karny's E. flavi- 

 cinctus from Java. I am unable to identify it with his 



* On account of the angle at which the basal part of each antenna is 

 mounted, I caunot give a description of joints 1 to 3. 



