EDMUND H. GIBSON 69 



THE GENUS CORYTHUCHA STAL 



(TINGIDAE; HETEROPTERA) 



BY EDMUND H. GIBSON 

 United States Bureau of Entomology 



Preluding the subject matter of this paper should come an 

 introduction in the form of a tribute to the memory of the late 

 Mr. Otto Heidemann, but, with an insufficient command of elo- 

 cjuence and composition, the author feels restrained from attempt- 

 ing to add more to the several eulogies which have appeared in 

 entomological journals since Mr. Heidemann's death. It was the 

 cherished hope and plan of Mr. Heidemann to revise the family 

 Tingidae, and, with a wealth of material at hand and available 

 for stud}^, he no doubt would have accomplished his purpose in an 

 admirable way, but even as he began he was called to a better 

 land. 



In this paper the author has made full use of the notes Mr. 

 Heidemann left and throughout credit is given to him. The 

 author is also extremely appreciative of much valuable advice 

 from Messrs. Howard M. Parshley and Carl J. Drake, and for 

 the generous loan of their collections, as well as those of Messrs. 

 H. G. Barber, J. R. de la Torre Bueno, W. L. McAtee and Edgar 

 L. Dickerson. 



^^^ith the present paper the total number of described species 

 of Corythucha has been brought to fifty-seven. At the time of 

 Van Duzee's check-list, April 24, 1916, there were but fifteen 

 known species. All but one of the fifty-seven species are known 

 to occur in North America, including ]Mexico; six of them in 

 Central America; two in the West Indies, and two in South 

 America. 



Members of the genus are all leaf feeders, but much is yet to 

 be known regarding their host plants. It is quite likely that 

 most of the species have restricted food preferences. 



StS,l described the genus Corythucha in 1873, erecting it upon 

 his fuscigera, which is the logotype of the genus. 



In regard to separating the species Mr. Heidemann often ex- 

 pressed his belief that the following characters or points should 



TRANS. AM. ENT. SOC, XLIV. 



