528 SOME NEW AND LITTLE-KNOWN EXOTIC THYSANOPTERA 



Genus LEPTOTHRIPS Hood {in litL), 1909 



In 1902, Dr. Hinds, in his well-known paper on the North 

 American Thysano;ptera*, described a species under the name 

 of Cryptothrips aspersus, which is obviously not referable to 

 the genus Cryptothrips Uzel, s.s. More recently Hood erected 

 the genus Phyllot]irips\ for the reception of P. citricornis Hood 

 and C. aspersus Hinds. Mr. Hood agrees with the writer, 

 however, in regarding his P. citricornis as a species of 

 Liothrips Uzel, and, being the type species of the genus 

 Phyllothrips, that name must be sunk as a synonym of 

 Liothrips. It is evident, too, that C. aspersus cannot be 

 admitted in either of the genera Cryptothrips or Liothrips. 

 Hood therefore proposes {in litt., April 13, 1909) to erect the 

 genus Leptothrips for the reception of Hinds' C. aspe?'sus. 



We are pleased to be able to describe a second species of 

 that genus. 



Leptothrips flavicornis sp. n. (PI. xiv,, figs. 6-8). 



$. Length 2*6 mm. ; breadth of mesothorax 0*4 mm. 



General colour chestnut-brown. Antennae transparent yellow, 

 excepting the two basal joints; apical joints slightly tinged 

 with a darker shade. All tarsi yellow ; fore-tibias shaded from 

 a light brown at knee to light yellow at tips, and the inter- 

 mediate and hind tibiee clear yellow at tips also. 



Head nearly twice as long as the prothorax, and one and 

 one-half times as long as broad. Vertex raised, bearing the 

 anterior ocellus at extreme apex. Mouth-cone rounded, and 

 reaching about two-thirds across prosternum ; cheeks sub- 

 parallel. Eyes finely facetted, occupying about one-third the 

 length of the head; ocelli large, the posterior pair close to 

 margins of eyes, and on a line drawn through their anterior 

 third. Antennae inserted below vertex, a little more than one 

 and three-quarter times the length of head; joints three to 

 six clavate, practically subequal in length, the sixth being 



* Proc. U.S. Nat. Museum, xsv., pp. 79-242, pi. i.-xi., 1902. 

 t The Canadian Entomologist, xl., pp. 305-309, 1908. 



