246 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull 



Homop. N. Y. St. Cab., 64, 1851. 



Nymph pellucid and yellow. Gregarious in white fluff on 

 ventral surface of blackberry leaf. Mature insect with beautiful 

 banded wings. For figures see Patch (1912). 



New Haven, 21, 23 Oct., 1903; Yalesville, 19 Oct., 1903 (H. L. V.) ; 

 Westville, 29 May, 1907 (W. E. B.). 



T. obtusa Patch. 



Me. Agr. Expt. Sta., Bull. 187, 18, 191 1. 



Nymphal stages passed on the leaves of Amelanchier canadensis 

 where they are conspicuous because of "the beautiful white floss- 

 like wax filaments that curl softly up from the margin of the body. 

 For description and figures see Patch (1911). 



Calophya Fr. Loew. 



Key to Species. 



Genal cones longer than width at base; wings yellowish, trans- 

 parent flavida 



Genal cones not longer than broad; wings black or brown, not 

 transparent nigripennis 



C. flavida Schwarz. (PL vi, 6.) 



Proc. Ent Soc. Wash., vi, 243, 1904. 



Common on Rhus glabra. 



New Haven, 18 March, 1903, 10 June, 1904 (B. H. W.), 8 June, 1904; 

 Unionville, 10 June, 1904 (W. E. B.). 



C. nigripennis Riley. 



Proc. Ent. Soc. Wash., vi, 244, 1904. 



Common on Rhus copallina. 



Mount Carmel, 23 June, 1904 (E. J. S. M.) ; Brooksvale, 30 May, 1902; 

 Unionville, 10 June, 1904; Westville, 4 July, 1904, 22 June, 1907; Hamden, 

 14 June, 1911 (W. E. B.) ; New Haven, 10 June, 1904 (B. H. W.) ; 16 

 May, 1918 (M. P. Z.). 



Pachypsylla Riley. 



Key to Species. 



1. Fore wings variously maculated . 2 



Fore wings uniformly brownish, gall on petiole or small twig .... 



celtidis-gemma 



2. Forming galls on leaves 3 



Gall large, spherical, on twig or petiole. Branches of M and 



approximate branch of Cu tipped with angular marks in form of 

 three tridents venusta 



3. Gall mammiform on ventral side of leaf, concave on dorsal side, 



wings whitish, covered with small dark flecks over entire surface, 

 with paler submarginal band extending across apical portion of 



wing celtidis-mamma 



Gall blister-like on both sides of leaf, insect closely resembling 

 c.-mamma though smaller celtidis-vesiculum 



