164 MISCELLANEOUS STUDIES 



Conium (poison hemlock) 



159. Siplwcoryne pastinacae (Linn.) 

 Convolvulus (morning glory) 



56. Amphorophora latysiplwn Davidson 

 123. Aphis gossypii Glover 

 72. Macrosiphum ludovicianae (Oestlund) 

 Corn, see Zea 

 Cornus (dogwood) 



119. Aphis cornifoliae Fitch 

 123. Aphis gossypii Glover 



Corylus (hazelnut) 



16. Mysocallis coryli (Goetze) 



100. Bhopalosiphum corylinum Davidson 

 Cotoneaster (cotoneaster) 



139. Aphis pomi de Geer 

 Cotton, see Gossypium 

 Cottonwood, see Populus 

 Cow parsnip, see Heracleum 

 Cowpea, see Vigna 

 Cowslip, see Primula 

 Crab apple, see Pyrus 

 Cranesbill, see Geranium 

 Crataegus (hawthorn) 



120. Aphis crataegifoliae Fitch 

 139. Aphis pomi de Geer 



Cruciferae (various spp.) 



112. Aphis brassicae Linn. 



141. Aphis pseudobrassicae Davis 

 Cucumber, see Cucumis 

 Cucumis (cucumber, muskmelon, cantaloupe, etc.) 



123. Aphis gossypii Glover 

 Cucurbita (squash, gourd, pumpkin, etc.) 



123. Aphis gossypii Glover 



66. Macrosiphum cucurbitae (Thomas) 

 Cupressus (cypress) 



161. Cerosipha cupressi Swain 



96. Macrosiphum morrisoni Swain 

 Currant, see Eibes 

 Cydonia (quince) 



139. Aphis pomi De Geer 

 Cynara (artichoke) 



86. Myzus braggii Gillette 

 Cynoglossum ( houndstongue ) 



104. Elwpalosiphum persicae (Sulz.) 

 Cypress, see Cupressus 

 Cyrtomium (holly fern) 



162. Cerataphis lataniae (Boisd.) 

 58. Idiopterus nephrelepidis Davis 

 88. Myzus circumflexus (Buckton) 



Cytisus (broom) 



146. Aphis senecio Swain 



104. Ehopalosiphum persicae (Sulz.) 



