92 MISCELLANEOUS STUDIES 



24. Bright yellow with black markings. Cornicles at least three times as long as 



hind tarsi nerii Fonsc. 



Dark green with black markings. Cornicles but about twice as long as hind 



tarsi cardui Linn. 



25. Cornicles longer than III 26 



Cornicles at most equal to III 29 



26. Ill considerably longer than VI spur 27 



Ill subequal to or but slightly longer than VI spur 28 



27. Black. Cornicles about three times as long as hind tarsi. Ill one and one- 



half times as long as VI spur sambucif oliae Fitch 



Green, pale to apple. Cornicles about four times as long as hind tarsi. Ill 



almost twice as long as VI spur salicicola Thomas 



28. Cornicles subequal to or but slightly longer than III, and about twice as 



long as cauda prunorum Fabr. 



Cornicles one and one-half to two times as long as III, and about four times 



as long as cauda oregonensis Wilson 



29. Cornicles considerably shorter than III 30 



Cornicles subequal to or but slightly shorter than III 37 



30. Ill and IV spur subequal persicae-niger Smith 



- Ill longer than VI 1 31 



31. Cornicles at least twice as long as cauda 36 



Cornicles not twice as long as cauda 32 



32. Pale green, pulverulent cerasifoliae Fitch 



Dark green, brown, or black, not pulverulent 33 



33. Cornicles about three times as long as hind tarsi 34 



Cornicles not three times as long as hind tarsi 35 



34. Ill with a few small secondary sensoria hederae Kalt. 



No secondary sensoria .- cornifoliae Fitch 



35. Cornicles considerably more than twice as long as hind tarsi. Lateral abdom- 



inal tubercles only on first and seventh segments heraclii Cowen 



Cornicles at most but slightly more than twice as long as hind tarsi. Lateral 



tubercles usually on more than first and seventh segments .... euonomi Fabr. 



36. Antennae about as long as body. Cornicles more than twice as long as 



Cauda cari Essig 



Antennae but about one-half as long as body. Cornicles but about twice as 



long as cauda gossypii Glover 



37. Ill considerably longer than VI spur : 38 



Ill and VI spur subequal 40 



38. A pair of dorsal abdominal tubercles on sixth and seventh segments. 



malifoliae Fitch 



No dorsal abdominal tubercles on sixth and seventh segments 39 



39. Cornicles green, cylindrical, tapering slightly toward tip, and fairly straight. 



Cauda about one and one-half times as long as hind tarsi. Abdomen with- 

 out dusky dorsal markings ramona Swain 



Cornicles black, cylindrical, curved outward. Cauda and hind tarsi subequal. 



Abdomen with dusky dorsal markings seanothi Clarke 



40. VI spur slightly longer than III. Cornicles and cauda subequal. 



viburnicolens n.sp. 



VI spur slightly shorter than III. Cornicles one and one-half times as long 



as cauda pomi De Geer 



