SYRPHIDAE OF MAINE. 



223 



List of Homoptera* Attacked by Syrphidae in Maine as 

 Observed in 1915. 



aphid. 



host plant. 



SYRPH1D. 



Aphis viburnicola . . 



Aphis vibumiphila. . 



Patch mss. 



Aphis cardui 



Aphis cerasifolii 



Aphis pomi 



Aphis spiraecola. . . 



Aphis spiraephila 

 Aphis sanborni . . . 



Aphis rumicis 



Aphis rumicis 



Aphis rumicis 



Aphis helianthi 



Aphis cornifoliae 



M acrosiphum rosae 



Macrosiphum solanifolii. . 

 M acrosiphum ludbeckiae 



Macrosiphum sp 



Myzus cerasi 



Myzus cerasi. 



Myzus cerasi.. . 

 Myzus persicae. 



Myzus sp 



Rhopalosiphum nymphaeae 



Rhopalosiphum nabali. 

 Phorodon humuli 



Pterocomma flocculosa . 



Siphocoryne .rylostii 



Symdobius oblongus. .... 

 Chaitophorus populifoliae 



Chaitophorus sp 



Schizoneura americana. . . 

 Schizoneura lanigera. .... 



Tetraneura graminis 



Prociphilus corrugatans.. . 

 Prociphilus fraxinijolii. . . 



Thecabius palchii 



H amamelistes spinosus. . . 



PSYLLID. 



Psylla striata Patch. 

 Psylla cerasi Patch . 



Viburnum opulus. 

 Viburnum opulus. 

 Plum 



Prunus virginiana. 



Apple. . 

 Spiraea. 



Wild Spiraea 



Flowering Currant. 



Syringa 



Evonymus alatus. 

 Broad-leaf Dock . 



Cornus 



Corn us 



Rose 



Syrphus ribesii 

 Sphaerophnria cylindrica 



Rose 



Goldenrod, 



Anaphalis margaritacea. 



Plum 



Wild Cherry 



Prunus sp. 

 Rape 



Currant . 

 Plum . . . 



Prenanthes sp. 

 Plum 



Willow . 



Snowberry 



White Birch 



Poplar 



Willow 



Elm (Curl) 



Apple 



Elm (Cock's Comb Gall). 

 Amelanchier canadensis.. . 



Ash 



Populus balsaminifera. . . . 

 Birch 



Birch 



Prunus Pennsylvanica 



Syrphus sp. 

 Sphaerophoria sp. 

 Sphaerophoria cylindrica 

 Syrphus sp. 

 Syrphus americanus 

 Syrphus torvus 

 Sphaerophoria sp. 

 Paragus angustifrons 

 Paragus angustifrons 

 Sphaerophoria sp. 

 Sphaerophoria cylindrica 



Sphaerophoria cylindrica 

 Sphaerophoria sp. 



Sphaerophoria cylindrica 



Syrphus sp. 



Sphaerophoria 'cylindrica 

 Sphaerophoria sp. 

 Sphaerophoria cylindrica 

 Melanostoma mellinum 

 Sphaerophoria cylindrica 

 Sphaerophoria sp. 



Syrphus ribesii 

 Syrphus sp. 

 Sphaerophoria cylindrica 



Syrphus ribesii 

 Syrphus torvus 

 Syrphus sp. 



Sphaerophoria cylindrica 

 Syrphus nitens 

 Syrphus americanus 

 Didea fasciata fuscipes 



Syrphus americanus 

 Syrphus ribesii 



Pipiza pisticoides 



Syrphus sp. 

 Syrphus ribesii 



* Identifications by Dr. Edith M. Patch, Entomologist. 



