THE JUMPING PLANT-LICE OR PSYLLIDiE OF THE NEW WORLD. 75 



SYNOPSIS OF SPECIES. 



'. Posterior tibiae with three black spines on inner side, and one outside; pronotum 



usually long. 

 6'. Antennae not longer than width of head; body large, robust; wings large. 

 cK Vertex and notum with short pubescence; vertex light colored, rather flat, not 



coarsely punctate bakeri Crawford. 



c^. Vertex and notum not pubescent; vertex black, bulging lobately in front, very 



coarsely punctate brevmntennata, new species. 



6*. Antennae distinctly longer than width of head, seldom more than twice as long. 

 c'. Vertex and thoracic dorsum more or less pubescent. 

 cH. Pubescence long, prominent; wing veins without setae; membrane of wings 

 transparent; second marginal cell unusually large; genal cones about half 



as long as vertex diospyri Ashmead. 



cP. Pubescence very short; wing veins with conspicuous setse; membrane 

 darkened by numerous punctural dots; second marginal cell not unusually 

 large; genal cones as long aa vertex. 

 e^. Body large; wings smoky or fulvous; setae on veins prominent. 



mexicana Crawford, 

 e^. Body rather small; wings only slightly fulvous; setse not prominent. 



mexicana minuta Crawford . 

 c'. Dorsum of thorax not pubescent, 

 d'. Genal cones not or scarcely more than half as long as vertex, not strongly 

 divergent; female genital segment very elongate and styliform. 

 e'. Female genital segment three-fourths as long as rest of body; styliform 

 prolongation more than twice as long as basal portion ; posterior margiu 

 of male anal valve angulate; antennae twice width of head. 



proxvnata Crawford, 

 e*. Female genital segment not over half as long as rest of body; styliform 

 prolongation one to one and a half times as long as basal portion; pos- 

 terior margin of male anal valve arcuately rounded ; antennae less than 

 twice width of head. 

 f^. Clypeus very large; styliform prolongation of female genital segment 

 usually much longer than basal portion; genal cones bluntly 



rounded longistylus Crawford . 



/2. Clypeus not large; styliform prolongation of female genital segment 

 usually not longer than basal portion (sometimes longer) ; genal cones 



acute at apex collaris Crawford. 



dr. Genal cones more than half as long as vertex, more divergent; female 

 genital segment not styliform. 

 e'. Forewiug with four brown maculae on posterior margin; costal margin 

 strongly arched; Rs short; genal cones rather short, scarcely two-thirds 



as long as vertex quadripunctata Crawford. 



e^. Forewings without four such maculae; genal cones at least two-thirds as 



long as vertex. 



f^. Antennae nearly or quite twice as long as width of head; forewings 



broadly rounded at apex; Rs short, straight; legs very slender; genal 



cones about two-thirds as long as vertex; hind tibiae occasionally with 



only two spines at apex inside albifrons Crawford. 



/'. Antennae not over one and a half times width of head ; wings not broadly 



rounded; Rs longer; genal cones often as long as vertex; legs not 



always slender. 



g^. Antennae one and a half times width of head; vertex not or scarcely 



pubescent; posterior lobe of male anal valve large (fig. 358). 



h.^ Body brownish red to orange; thorax strongly arched; dorsum not 



pubescent frontalis Crawford . 



