THE JUMPING PLANT-LICE OR PSYLLID^ OF THE NEW WORLD. 139 



r^. Female genital segment shorter than rest of abdomen. 

 dK Pterostigma of forewing long; head very broad, with a short, constricted, 

 stalk-like area between inner margin of eye and elevated portion of vertex 

 and posterior ocellus; genal cones not separated at base; color greenish 

 yellow, 

 e'. Antennae conspicuously annulated with black on basal half. 



annulata Fitch. 

 €-. Antennae uniformly yellowish, except terminal segment black. 



negundinis Mally. 



d^. Pterostigma of forewing very short, broaa at base; eyes not stalked, vertex 



extending uniformly to base of eyes; genal cones separated at base, 



strongly divergent; color orange to red, vertex often bordered with white, 



and genal cones white or pale on basal half. 



e'. Male forceps converging to a simple point, not acuminate. 



hrevistigmata Patch. 

 e^. Male forceps more slender, more acuminate, and turned forward in apical 



third, bluntly pointed hrevistigmata acuta, new variety. 



a^. Antennae distinctly over two and a half times as long as width of head, sometimes 

 much more. 

 6' . Body very large, length to tip of folded wings at least 5 mm . , seldom less; antennae 

 nearly or more than three times as long as width of head. 

 c^. Pterostigma almost obsolete; basal spur on hind tibiae small. 

 d}. Female genital segment longer than rest of abdomen, very slender and 

 acuminate, abruptly enlarged at base; male forceps subacute at tip, not 



notched floccosa Patch. 



d^. Female genital segment shorter than rest of abdomen, thick and stout; 

 male forceps more or less notched at apex, or bifid. 

 e^. Color of body nearly uniformly greenish yellow, or with an orange tinge; 



genal cones subacute astigmata, new species. 



e^. Color similar but with three large conspicuous red spots on thoracic dorsum ; 



genal cones acutely pointed trimaculata Crawford. 



e^. Color of head and thoracic dorsum rosy, abdomen Vermillion with a 

 black spot at base dorsad, and five transverse black bands. 



cerasi Patch. 



c2. Pterostigma distinctly present, usually rather large and long; basal spiir on 



hind tibiae larger. 



cP. Genal cones not as long as their basal width, very broadly rounded, about as 



long as vertex or shorter; forceps of male broadened apically; female 



genital segment as long as or often longer than rest of abdomen. 



alni americana, new variety. 



d^. Genal cones distinctly longer than their basal width, more or less acute 



at apex. 



e^. Female genital segment nearly as long as rest of body, acuminate, strongly 



upcurved, with an apparent suture about midway across both valves; 



color of body dark brown, notum striped caudata, new species. 



c^. Female genital segment only about three-fifths as long as rest of body, 

 not upcurved , without the apparent suture ; color of body typically green. 



galeaformis Patch. 



6^. Body small, scarcely over 3 mm. long to tip of folded wings; antennae extremely 



long and slender, more than four times as long as width of head; basal spur 



on hind tibiae large; male forceps not simple. 



c^ Genal cones moderately long, coniform, not quite as long as vertex. 



dK Wings less than twice aa long as broad, rather square on apical margin; 



pterostigma short torrida, new species. 



