THE YOUNG NATUEALIST 161 



Aphides and 



their Food Plants, 





FOOD PLANTS. 



APHIDES. 







CALLIPTERUS 



Birch (115, i2i, 123) 



Betula alba 



120. Betularius. 



Do. (115, 120, 123) 



do. 



121. Betulicola. 



Hazel (24) 



Corylus Avellana 



122. CORYLI. 



Birch (115, 120, 121) 



Betula tremula 



123. Carpini. 



Oak (125, 139, 140, 143, 144, 159) 



Quercus sessiliflora and 







Ilex 



124. Quercus. 



Oak (124, 139, 140, 143, 144, 159) 



Quercus Robur 



125. Querceus. 



Chesnut 



Castanea vesca 



126. Castanet. 







PTEROCALLIS 



Alder 



Alnus glutinosa 



127. Alni. 



Walnut (130) 



Jvglans regia 



128. JUGLANDICOLA. 



Lime (1) 



Tilia grandifolia 



128. TlLI^E. 



Linden-tree 



Tili a europcea 









PHYLLAPHIS 



Beech 



Fagus sylvestris 



129. Fagi. 







PTYCHODES 



Walnut (128) 



Juglans regia 



I3O. JUGLANDIS 







LACHNUS 



Juniper 



Juniperus communis 



131. JUNIPERI. 



Cypress 



Cypressus sempervirens 



132. CUPRESSI. 



Scotch Fir (135, 136, 148, 160, 162, 166) 



Pinus sylvestris 



133. Agilis. 



Spruce Fir (66, 138, 145) 



Abies excelsa 



134 Macrocephalus 



Scotch Fir (133, 136, 148, 160, 162, 166) 



Pinus sylvestris 



135. PlNI. 



Larch 



Pinus Larix 



I36. PlNICOLUS. 



Scotch Fir (133, 135, 148, 160, 162, 166) 



Pinus sylvestHs 





Willow-bark (58, 70, 111, 113, 114, 117) 



Salix acuminata 



137. VlMINALIS. 



Spruce Fir (66, 134, 145) 



Abies excelsa 



I38. PlCE^E. 



Silver Fir 



Abies Picea 





Oak (124, 125, 140, 143, 144, 159) 



Quercus Robur 



I39. LONGIPES. 







STOMAPHIS. 



Oak (124, 12K, 139, 143, 144, 1=59), feeding 





140. Quercus. 



on the bark of the branches 



Oti.ppp.ti,'} Tfrihiii)* 









PARACLETUS 



Hard fescue-grass, at the roots 



Festuca auriuscula 



I4I. ClMICIFORMIS 



and in Ants nests 



Formica, rufa 







f T? A M A 



Roots of various plants, for instance : 





142. Troglodytes. 



Dandelion 



Leontodon Taraxacum 



Common Thistle 



Carduus arvensis 





Sow Thistle 



SoncJius oleraceus 





(120). The -wings of this genus are generally clouded at the extremities of the veins. Betularius and 

 Coryli are exceptions; and as a rule they also lead a more solitary life, Coryli (sometimes) is an exception. 



