No. 34-] HEMIPTERA OF CONNECTICUT: MEMBRACIDAE. 183 



in C. mera and the posterior process is shorter. The life history 

 is not known. 



Host : White oak. 



Lyme, 20 Aug., 1910; Portland, 13 Aug., 1913 (B. H. W.) ; Litchfield, 

 22 July, 1920 (M. P. Z.). 



C. stupida (Walker). 



1851. Darnis stupida Walker. List Horn. Brit. Mus., ii, 577, No. 16. 



1878. Hyphens stupidus Butler. Cist. Ent., ii, 343. 



1894. Carynota muskokcnsis Coding. Cat. Memb. N. A., 444. 145. 



1903. Hyphens albopicta Buckton. Mon. Memb., 135. PI. 29, figs, i, la. 



1913. Carynota stupida Gibson. Rept. Ent. Soc. Ont, 135, No. 43. 



Probably common. May be distinguished from the other species 

 by its small size, very dark color, and by the regularly arcuated 

 dorsal margin of the pronotum. 



The life history is unknown. In the original description of 

 Carynota muskokensis, Coding gives as a questionable food-plaiTit 

 Populus grandidentata. 



Host: Large-toothed aspen (?). 



Pleasant Valley, Litchfield, 5 Sept., 1915 (G. P. Engelhardt). 



Thelia Amyot and Serville. 



A genus characterized by the porrect pronotal horn. Only one 

 species is common in the eastern United States but this species is 

 so abundant that it is very well known. 

 T. bimaculata (Fabricius). (PI. iv, 14, 15 and 16.) 



1794. Memhracis bimaculata Fabricius. Ent. Syst, iv, 10, No. 11. 



1843. Thelia bimaculata Amyot and Serville. Hem., 541. 



1851. Thelia unanimus Walker. List. Hom. Brit. Mus., 566. 



Extremely abundant on locust. It apparently inhabits only the 

 locust and only one species of this tree (Robinia pseudacacia) but 

 occurs in great numbers. It is not unusual to collect several 

 hundred individuals from one small locust sapling. 



The species is easily recognized by the large size, the porrect 

 pronotal horn and the brilliant yellow markings of the male which 

 have suggested the specific name. The female is gray with indis- 

 tinct darker irregular markings, cylindrical horn slightly flattened 

 and darker at the tip, hyaline tegmina with fuscous tips which 

 extend almost to the extremity of the posterior process. The 

 female is about 11 mm. long (including horn, 14 mm.) and 5.5 mm. 

 wide between the humeral angles. The male is smaller and less 

 robust, and has a wide, brilliant lemon-yellow longitudial stripe 

 on each side of the prothorax. 



The life history of the species has been described in detail 

 (Annals Ent. Soc. Amer., viii, pp. 140-151, 191 5) and is interesting 

 in that the eggs are often laid at the roots of the tree just below 

 the surface of the forest litter. The species is largely attended by 

 ants. 



Host : Locust. 



