xv, 2 Crawford: Jumping Plant Lice Ig9 



f. Antennae more than twice as long as width of head; 

 insect small, about 2.5 millimeters long, forming 

 galls on Eucalyptus. (Australia.) 



T. circularis Froggatt ('01: 279). 

 f. Antennas very short, not much longer than width 

 of head; insect larger, 3.5 millimeters long, not 

 gall makers. (Bengal, Singapore.) 



T. fletcheri Crawford ('12: 434). 

 h". Radius not very short, reaching nearly to tip of wing, 

 often curved or sinuate. 

 i'. Abdomen and genal cones black, latter as long aa 

 vertex. (Japan.) 



T. striola Flor. Kuwayama ('10: 62). 

 t*. Abdomen and genal cones light brown or yellow; cones 

 shorter than vertex. 

 f. Radius of forewing nearly straight or bent inward 

 near middle; antennas usually pale yellow, but 

 sometimes brown. 

 k\ Antennae rather short, not over twice as long as 

 width of head. 

 T. Body orange yellow to red, sometimes dark red; 

 insect about 4 millimeters long. (Japan.) 

 T. salicivora Reut. Kuwayama ('10: 59). 

 r. Body green or yellowish, about 3 millimeters 

 to tip of folded wings. (Japan.) 



T. viridula Zett. Kuwayama ('10: 61). 

 Ar. Antennae three times as long as width of head; 

 body bright yellow, abdomen green. (Japan.) 

 T. silacea M. D. Kuwayama ('10: 58). 

 f. Radius of forewing sinuate; antennae black, thorax 

 yellowish. (Japan.) 

 T. curvatinervis Foerster. Kuwayama ('10: 62). 

 e a . Thoracic dorsum more or less conspicuously pubescent or 

 sparsely hirsute; radius short. 

 * P. Genal cones nearly or quite as long as vertex; forewings 



very acutely pointed; pubescence moderately dense. 

 g i . Fore tibiae with two stout spines at apex; body color yellow 

 to reddish brown; apex of forewing at end of media. 



(Australia.) T. eugenia: Froggatt ('01: 282). 



g"'. Fore tibiae without apical spines; body color dark brown; 

 apex of forewing within second marginal cell. (For- 

 mosa.) 



T. (Trichochermes) hyalina Kuwayama ('10: 55). 



f. Genal cones scarcely half as long as vertex; forewings less 



acutely pointed, veins setigerous; pubescence very sparse. 



(Philippines.) T. hizonensis Crawford ('17: 173). 



O*. Hind wings greatly aborted, reduced to very small stubs; forewings long 

 and acutely pointed, marginal cells far separated. (Singapore.) 



T. diptera sp. nov. 



The foregoing key has been arranged in part on descriptions of 

 species which in some instances are too meager and indefinite for 



