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304 The Ohio Journal of Science [Vol. XVII, No. 8, 



Corythucha aesculi Osborn and Drake. 



A very common species that infests buckeye, Aesciilus glabra, 

 throughout Ohio. We also have specimens from Illinois and 

 Kentucky. The winter is spent in the adult state in among the 

 leaves and grass on the ground beneath the tree. 



Corythucha associata Osborn and Drake. 



A common species that infests wild cherr^^ Priinus serotina, 

 east of the Mississippi River. Our collections include specimens 

 from Tennessee, Georgia, Long Island and Washington, D. C. 

 During the summer of 1916 Mr. L. A. Stearns found these 

 insects in immense numbers on wild cherry near Clarksville, 

 Tennessee. 



Corythucha bulbosa Osborn and Drake. 



Although we have no positive data, this species seems to be 

 known in some collections as Corythucha carbonata, a manu- 

 script name given to the species by Uhler and used by 

 Heidemann. It feeds on the American bladder nut, Staphylea 

 trifolia, in immense numbers. This is the largest Corythucha 

 known to us and very distinct from any other described species. 



Corythaica constricta spec. nov. 



Hood elongate, a little more arched and narrowed anteriorly than 

 in C carinata Uhler. Pronotum closely pvmctate, tricarinate, the 

 carinas arranged as follows: the lateral carinee raised anteriorly, 

 uniseriate, and extending from the base of posterior process to the 

 outer posterior margin of the hood, the median carina more strongly 

 raised anteriorly, with one complete row of areolee and three or four 

 extra cells at the highest part near the anterior end forming a double 

 series, reaching from the apex of triangular process and uniting with 

 the median raised nervure of the hood. Pronotal margins biseriate, 

 strongly refiexed, the outer margin following the contour of pronotum. 

 Bucculce large, with three to four rows of cells. Rostral groove closed 

 at the apex, the side reticulate; rostrum reaching between the inter- 

 mediate coxse. Antennae long, slender; first' segment a little longer 

 and more swollen than the second; third segment slender, nude, nearly 

 three times the length of the fourth; fourth segment swollen towards 

 the apex, clothed with a few long bristly hairs. Elytra reaching con- 

 siderably beyond the abdomen, broader and more strongly constricted 

 just back cf the middle than in C. carinata, the tumid elevation moder- 

 ately large; costal area uni.seriate, with most of the areolas very large; 

 subcostal area mostly triseriate; discoidal area not quite reaching the 

 middle of the elytra, with four rows of cells at the widest part; sutural 

 area broad, widely reticulate, with five or six cells at the widest part. 

 Length, 2.()2 mm.; width, 1 mm. 



