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The Insect Galls of Indiana. 



Mel T. Cook. 



During the past suminei- I ha\'e received a large number of species of 

 galls from Mr. F. C. Greene, of New Albany, Indiana. This material was 

 collected in the vicinity of Winona Lake and contained a number of well 

 defined species, including 17 species not recorded in my "Insect Galls of 

 Indiana."* In order to facilitate the vs'ork of future students on the 

 flora and fauna of the state and also to give records of distribution to the 

 more general students who may bo working over the material of a greater 

 territory, it has been considered a<ivisable to publish descriptions of these 

 additional species. 



Mr. Greenes collection and also my own Indiana collections made some 

 years ago contain a number of species which I am unable to determine 

 at this time and. in fact, many which I believe to be undescribed. My 

 studies were made primarily from the standpoint of the botanist, and as 

 all students of these groups well know there are frequently many difficul- 

 ties in making satisfactory determinations unless the insects are taken 

 into consideration. In most cases I did not have the insects, but made 

 my determinations from the galls. However. I hope to take up the re- 

 maining species at a later date and make satisfactory disposition of them. 

 A summarization of the facts presented in this paper gives the fol- 

 lowing; an addition of 17 new species of galls making a total of 82 

 sj)0('ies known to the state. An addition of 5 new genera making a total 

 of 33 genera.* The host plants named in tliis list gives us two new orders, 

 five new families and ten new genera of host plants. 



*29th Annual Report of the Department of Geologry and Natural Resouroe.s of Indi- 

 ana. 1904, pp. 801-867. 



*My Insect (lalls of Indiana grave 25 Genera, but Aldricli in liis Catalogrue of North 

 American Diptera (1905) transfers Cecidomyia strobiloides C). S. to the genus Rhabdo- 

 phaffa, Cecidomyia solidaginis Loew to the genus Dasyneura, and Trypeta snlidnginis 

 Fitch to the genus Durosta, thus bringing my list from 26 to 28 genera. 



