214 MAINE AGRICULTURAL EXPERIMENT STATION. I9IO. 



that Tetraneura colophoidea with similar elm galls is the same as 

 Tetraneura graminis Monell. * * * That there are grass forms of 

 these genera is one of Lichtenstein's old theories. Osborn and Sirrine 

 give a note of all these species 'Notes on Aphididae' in Proc. la. Acad. 

 Science Vol. I, part III, pp. 98-101. * * * j suppose by Tetraneura 

 ulnii they mean Tetraneura colophoidea. * * * This Tetraneura, has 

 been referred to T. ulmi in divers publications but it is distinct, t have 

 seen one European gall of T. ulmi of Europe raised from European eggs. 

 See Can. Ent. January 1882, page 16. Monell 'Notes on Aphididae' * I 

 do not remember now whether I ever got any winged specimens. I do 

 not think there is any other authentic record of ulmi in U. S. * * * 

 I have examined hundreds of specimens of Colopha ulmicola and find 

 venation very constant. I have also examined hundreds of the T. 

 colophoidea and find its venation always constant. * * * j think they 

 are distinct, and yet they may be dimorphs." 



The name Tetraneura colophoidea was printed in a paper 

 "Upon the Aphis- feeding- Species of Aphelinus" by Doctor 

 Howard in the Entomological News, October, 1908, p. 365, 

 and in response to inquiry concerning this species by Mr. J. J. 

 Davis, Doctor Howard wrote him, December 9, 1908, — "Mr. 

 Pergande reports that the name colophoidea was a provisional 

 manuscript name given to the insect in question some years ago 

 by Mr. J. Monell. It has never been published so far as Mr. 

 Pergande knows." 



This insect was described and figured under the name Tetra- 

 iieiira ulmi by Mr. C. E. Sanborn* and a description by Mr. 

 Burrows of the cockscomb gall from which it emerges is in- 

 cluded in Mr. Sanborn's treatment of this insect. That his 

 species is not T. ulmi of Europe is apparent from the descrip-- 

 tion of the gall, and from the venation it is apparent that it is 

 colophoidea and not tdmicola which he figures. 



Mr. Sanborn very kindly sent me specimens of this species 

 collected June 21, 1904, by Mr. Burrows at Lawrence, Kansas. 

 The material was labeled Tetraneura ulmi DeG., under which 

 name the description of the winged form and gall are recorded 

 in Kansas Aphididce. The specimens sent me accord with 

 Tetraneura colophoidea as I have found it in Maine. 



Osborn and Sirrine (1893) suggest the identity of Tetraneura 

 "^dmi" and graminis. As a slide of winged graminis lent me 



*"I have succeeded in raising T. ulmi at St. Louis from eggs sent to 

 me by Mr. Kessler of Cassel. They seem to thrive the first season but 

 did not appear again the next year." 



*Kansas Aphididae. p. 23 and Plate V, Fig. 34. 



