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



20 May, 1913 ; Lyme, 7 June, 1913 ; Winsted, 18 Aug., 1913 ; Mount Carmel. 

 9 Feb., 1914; Clinton, 27 Mar., 1914; Bristol, 6 Nov., 1914. 



E. lanuginosa (Hartig). 



Zeit. fur Ent, iii, 367, 1841. 



"During the summer of 191 3 a gall resembling, very closely, 

 those produced by this species as figured by Buckton was taken in 

 Connecticut by Dr. Britton. This gall was sent to Dr. Edith M. 

 Patch, of the Maine Agricultural Experiment Station. When 

 received by Dr. Patch the gall was brown and dry. None of the 

 inhabitants were secured for identification. A note recording the 

 occurrence of this gall in Connecticut with a brief description 

 occurs on page 263 of Bull. 220 of the Maine Agricultural Experi- 

 ment Station. A very good picture of the gall is given in Fig. 

 139 C of the same bulletin. While the identity of this species may 

 be in doubt, as a matter of record, it may well be included among 

 the species occurring within the United States." 



Stamford, and Port Chester, N. Y., 25 Aug., 1913 (W. E. B. and F. A. 

 Bartlett). 



E. pyricola Baker and Davidson. 



Jour. Agr. Research, vol. vi, 358, 1916. 

 E. rileyi Thomas. Eriosoma ulmi Riley. 



Trans. 111. Hort. Soc., 191, 1877. 



This species congregates in flocculent masses on the bark of 

 Ulmiis americana causing a knotty growth of the affected parts. 

 It is discussed and figured by Patch (1910a). , 



Hartford, 10 Sept., 1910. 

 E. ulmi (Linnaeus). Schizoneura fodiens Buckton. 



Syst. Nat., Edn. 10, 453, 1758. 



This species makes the same type of leaf roll on European elms 

 that E, americanum does on the American elm. The summer 

 generations occur on the roots of Ribes, For account see TuUgren 

 (1909). 



Norfolk, 30 June, 1914; Middletown, July, 1914. 



Georgia Wilson. 



This genus is suggestive of both Eriosoma and Colopha. The 

 stem mother has the five- jointed antennae of Eriosoma. The early 

 summer generations live in pseudo galls on the host plant. 



The antennae of the alate generations are six-jointed. The sen- 

 soria are narrowly linear, but do not encircle the joints to any 

 extent. The venation of the hind wing is that of the genus 

 Colopha in that only the media is present. M of the fore wing is 

 once forked. The cornicles of the alate viviparous females are 

 similar to those of the genus Eriosoma. Sexuals unknown. 



The genus is represented by but one species G. ulmi Wilson. 



