188 GENUS GARGAPHIA 



The writer has deemed it wise to redescribe all of the species 

 known to him so as to conform to the idea of uniformity in 

 description. 



In the listing of the species no attempt is made at a natural 

 or evolutionary order; instead, they are presented as they occur 

 in the key. 



GARGAPHIA St&l 



1862. St&l, Stett. Ent. Zeit., xxiii, p. 324. 



1873. St&l, Enum. Hemip., iii, pp. 119, 124. 



1884. Uhler, Stand. Nat. Hist., ii, p. 285. 



1887. Provancher, Pet. Faune Ent. Can., iii, p. 159. 



1897. Champion, Biol. Centr.-Am., Heteropt., ii, p. 9. 



1898. Champion, Proc. Ent. Soc. Lond., p. 58. 



1916. Osborn and Drake, Ohio St. Univ., Bull., xx, p. 233. 



1917. Drake, Ent. News, xxviii, p. 227. 



This genus may be distinguished from all others of the family 

 by the sinuous transverse carina interrupting the rostral groove 

 between the meso- and metasternum. In general it may be 

 characterized as follows: Head small, black, more or less shiny, 

 with five prominent spines, three of which are on the front be- 

 tween the eyes and two at the base of head, one on either side. 

 These basal spines may be erect or decumbent and reduced to 

 mere threads. The frontal spines may be reduced to mere stubs. 

 Antennae long, first and second segments stout, the first at least 

 three times the length of the second, and about equal to the 

 fourth in length, segments more or less hairy. Pronotum with a 

 hood, varying in size with the species but never entirely covering 

 the head, three longitudinal membranous carinae, and a wide 

 membranous lateral margin which is more or less flaring and 

 angular in some species. A transverse sinuous carina interrupts 

 the rostral groove between the meso- and metasternum. Elytra 

 lacy, with hyaline areoles at least in the costal area. Various 

 areas of elytra well defined. Elytra narrowed at the base, never 

 reflexed anteriorly as in Corythucha. 



Food Plant Index 

 The following list of food plants is given merely as an aid to 

 identification. It is as complete as possible with the data at 

 hand, which was taken from various publications and insect 

 labels : 



