EDMUND H. GIBSON 95 



Its range includes the entire United States. Mr. IMcAtee 

 reports the food plants of this species in the vicinity of Wash- 

 ington, D. C, as being various members of the genus Aster. It 

 has been reported as injurious to Chrysanthemums. 



Riley's manuscript name irroratus refers to this species. 



37. Corythucha mexicana new species 



Pronotal hood high, but slightly less than twice as high as median carina, its 

 height more than one-half its length. Length of hood noticeably greater than 

 lenp-th of median carina. Lateral carinae terminating close to base of hood. 

 ■ Reticulations of hood somewhat larger than those of paranota. Spines rather 

 fine, short, but placed close together on membranous margins. Costal margins 

 of elytra rather concave. Size, 2.8 mm. long, L7 mm. wide. 



Membranous portions hyaline, marked with brown. Nervurcs of hood and 

 paranota more or less embrowned. Nervm-es of elytra embrowned in the form 

 of a band across base and a wide one across apex. Many areoles in apical band 

 hyaline. Nervures at center of costal margin of elyti-a embrowned to form a 

 spot. 



Type. — 9 , Linares, Xucvo Leon, ^Mexico. (Collection of 

 J. R. Bueno.) Allotype. — cf , same data as type. Paratypes. — 

 Three females and five males, same data as type. 



Three other specimens in Mr. Bueno's collection from San 

 Jose, Tamaulipas, Mexico, have been examined. Food plant lui- 

 known. 



38. Corythucha taorrilli Osborn and Drake 



1917. Corythucha morrilli Osborn and Drake, Ohio Jr. Sci., xvii, no. 8, p. 298. 



Pronotal hood more than twice as high as the median carina and its height 

 at least two-thirds its own length. Length of hood considerably greater than 

 length of median carina. Globose portion of hood longer than broad. Hood 

 gradual!}' narrowed anteriorly but not prominently constricted, nor at all 

 flattened on top or posteriorly. Reticulations of hood not large. Median 

 carina with two rows of areoles. Lateral carinae long, rounding, terminating 

 close to base of hood, and with areoles. Costal margins of elytra concave. 

 Spines along costal border of elytra and paranota, and on nervures medium 

 length, rather numerous but not prominent. Length, 3 mm., width, 1.5 nun. 



Hood more or less embrowned, paranota hyaline and tinged with fuscous, 

 becoming a dark spot at middle, which in .some specimens is faint or entirely 

 missing. Elytra hyaline crossed with four irregular brown bands. These bands 

 in some specimens are very faint and more nearly approach spots. A few 

 specimens examined have only faint traces of any brown markings and may be 

 considered a pale color form. 



The type and seven paratypes as well as innumeral)le other 

 specimens have been studied. Morrilli was a manuscript name 



TRANS. A.M. EXT. SOC, XLIV. 



