May, '09] 



ENTOMOLOGICAL NEWS. 



223 



dish orange crescents. Mouth cone reaching nearly to posterior edge of 

 prothorax, moderately sharp. Maxillary palpi three-segmented. An- 

 tennae eight-segmented, 2.8 times as long as exposed part of head. 

 First segment cylindrical, second barrel-shaped ; third and fourth more 

 or less fusiform ; fifth and sixth subcylindrical ; seventh cylindrical ; 

 eighth conical. Third segment distinctly, fourth and fifth slightly, stalked. 



Bifurcate sense cones on dorsal side of third 

 segment and ventral side of fourth. Spines 

 on antennae distinct, but not prominent. 

 Color uniform yellow. 



Prothorax 1.8 times as long, and 1.2 times 

 as wide, as head. Sides considerably arched. 

 Two or three short, curved spines near each 

 anterior angle, one long but weak spine at 

 each posterior angle. Other spines wanting 

 or inconspicuous. Mesothorax with rounded 

 anterior angles. Wings concolorous with 

 body ; costal and both interior veins promi- 



Fig. 2. Scirtothrips rnthvctii 

 n. gen. and n. sp. Head, 

 prothorax and antenna of 

 female. 



Fig. 3. Scii tothrips nithveni n. gen. and n. sp.- 

 Right fore-wing of female. 



nent, and rugose, at least in basal part ; costa set with about 23 spines, 

 which increase in length to the tip; fore vein with 10 or n spines 

 whice are closely set but at unequal distances in the basal half, far apart 

 distally ; hind vein with three spines not constantly placed. Entire sur- 



face of wing, including veins, covered 

 with minute spines arranged in longitu- 

 dinal rows which, in the basal half of the 

 wing, are ten to twelve in number. Legs 

 not stout, concolorous with body. 



Abdomen widest about fourth or fifth 

 segment, uniform in color. Ninth seg- 

 ment nearly twice as long as tenth. 

 Spines inconspicuous, except those on 

 segments nine and ten, and these are 

 weaker than frequently found among 

 Thripidae. Ovipositor long, extending 

 considerably beyond tip of abdomen. 



Described from seven females 

 taken in the terminal leaf clusters 

 of dogwood, Cornus stolonifcra, on 



Fig. n.-scMthrips ruthveni n 



