Mr. F. Walker's Descriptions of Aphides. 



is greenish black, or black, or brown, or pale brown, or bright 

 yellow : the borders of the fore-chest and the fore-breast are 

 yellow, or red, or reddish brown, or green : the abdomen is 

 yellow, or green, or dark green, or reddish brown tinged with 

 green ; its disc is usually more or less black, and it has sometimes 

 one or two rows of black dots on each side : the feelers are black, 

 but sometimes pale green at the base : the mouth is green, or pale 

 green, or pale yellow ; its tip is black : the tube at the tip of the 

 abdomen is yellow : the nectaries are sometimes only one-sixth of 

 the length of the body: the greater part of the hind- thighs is some- 

 times black, and more rarely all the thighs are black from the 

 middle to the tips, or even from near the base to the tips : the 

 wing-ribs are pale yellow, or pale green, or yellowish white ; the 

 rib-veins and the wing-brands are pale yellow or pale brown ; the 

 other veins are pale brown or brown. 



Length of the body ^ line ; of the wings 2 lines. 



Variations in the wing -veins. The third vein has no second fork. 



It feeds on the following plants : — 



Thalictrum minus. 

 Ranunculus bulbosus. 



hirsutus. 



repens. 



acris. 

 Aquilegia vulgaris. 

 Papaver Rhaeas. 

 Fumaria officinalis. 

 Nasturtium officinale. 

 Cochlearia Armoracaea. 

 Alliaria officinalis. 

 Erysimum barbarea. 

 Capsella Bursa-pastoris. 

 Cakile maritima. 

 Brassica oleracea. 



Rapa. 



campestris. 



Napus. 

 Sinapis arvensis. 



alba. 



nigra. 

 Raphanus sativus. 



Raphanistrum. 

 Dianthus. 

 Euphorbia Peplus. 

 Crepis tectorum. 

 Potentilla anserina. 

 Pyrethrum inodorum. 

 Myosotis scorpioides. 

 Inula dysenterica. 

 Digitalis. 

 Sonchus. 



Leontodon taraxacum. 

 Plantago lanceolata. 

 Mentha hirsuta. 

 Heliotropium Peruvianum. 

 Beta vulgaris. 



maritima. 

 Calceolaria pinnata. 

 Callistemma. 

 Tussilago. 



Geranium Robertianum. 

 Spergula arvensis. 

 Bunias Kakile. 

 Galium Mollugo. 

 Crocus. 

 Dianthus Caryophyllus. 



prolifer. 

 Tulipa. 

 Fuchsia coccinea. 



micrantha. 

 Narcissus. 



Mesembryanthemum . 

 Hyacinthus. 

 Verbena. 



Tropaeolum tricolor. 

 Solanum tuberosum. 

 Polygonum Persicaria. 

 Pimelea sylvatica. 

 Myrtus. 

 Citrus. 



Ruscus androgynus. 

 Cactus. 



And on many other hot-house, green-house, cultivated and wild 

 plants which will be mentioned in a future notice of this Aphis. 



