225 



Additions to the List of Gall-Producing Insects 

 Common to Indiana. 



Mel T. Cook. 



Two years ago the writer presented a list of forty species of gall- 

 prodiicing insects common to Indiana. One year ago an additional list of 

 eleven species was presented to the Academy. It was at first intended 

 to make as complete a list as possible and then to give a more extensive 

 discussion of these very interesting insects and the abnormal growths 

 produced liy them. However, a change of residence has made a change 

 of plans necessary. 



The following is a list of species which have come to my attention 

 within the past year and previous to my leaving Indiana. 



Hemiptera. 



52. Pemphigus vagabundus "Walsh. — Popuhts delUndes Marsh. 



53. IlamameUstis spinosus Shimer. Hamamelis Virginiana L. 



DiPTERA. 



54. Cecidomyia clavula Bpuf . fhrnus floridn Ij, 



55. Cecidomyia cerasi-seruttnae O. S. Primus serotinae Ehrli. 



Hymenoptera. 



56. Amphiholips prunus Walsli. Quercus sp 



57. Cynijjs pixum Fitch. Qnercus alba L. 



58. Dryophanta radkola Ashm. Quercus alba L. 



59. Neuroterus rileyi Bassett. Quercus prinus L. 



60. Phodites radicum O. S. Posa Carolina L. 



61. Phodites dicldocerus Harris. Posa Carolina L. 



62. PJiodiies globulus Beut. Posa Carolina L. 



Arachnida. 



63. Acarus serotinae Beut. Prunus serotina Ehrh. 



15— A. OF SCIKSCK, 'Ot. 



