100 Mr. F. Walker's Descriptions of Aphides. 



37. Aphis Abietis, n. s. 



The viviparous wingless female. The body is oval, pale red and 

 hairy : the feelers are pale brown, filiform, and nearly as long as 

 one-fourth of the body ; the fourth joint is less than half the 

 length of the third ; the fifth is much longer than the fourth ; 

 the sixth is as long as the fourth ; the seventh is extremely short : 

 the eyes are dark brown : the mouth is reddish brown, at least 

 two-thirds of the length of the body, and reaches far beyond the 

 hind-hips : the nectaries are dark, and like tubercles : the legs are 

 dull reddish brown, hairy, and moderately long ; the feet and the 

 tips of the shanks are brown ; the feet and the shanks are slightly 

 curved, and the latter are very hairy. 



The viviparous winged female. It resembles the preceding form 

 in colour and shape, but the head and the disc of the chest are 

 brown : the feelers are less than half the length of the body : the 

 wings are colourless and moderately long ; the veins and the 

 brands are brown ; the rib-vein begins to widen into the brand 

 before half the length of the wing ; the brand is long and nar- 

 row, and the angle which it forms at its tip is very obtuse ; the 

 first, the second and the fourth veins are nearly straight, and 

 the two former are near each other at the base, but far apart at 

 their tips ; the third vein is indistinct and extremely slender, and 

 obsolete at its source. While a pupa it is pale whitish red : the 

 head is dark red : the limbs are very pale red : the feelers and the 

 mouth have brown tips, and the former are hardly one-third of 

 the length of the body : the eyes are black : the nectaries are dark 

 red : the feet and the tips of the shanks are brown. 



1st var. The body is tawny and covered with white powder : 

 the disc of the head and that of the chest are dark brown : the 

 limbs are tawny : the feelers are as long as one-third of the body : 

 the eyes are black and prominent : the abdomen is paler beneath : 

 the nectaries are brown : the feet and the tips of the shanks are 

 brown : the wing-ribs, the brands and the veins are tawny. 



The winged male. The body is dark brown : the feelers are 

 brown, yellow at the base, and more than half the length of the 

 body : the eyes are black : the mouth is yellow with a brown tip 

 and nearly as long as the body : the legs are yellow and stout ; 

 the knees, the feet and the tips of the shanks are black : the wings 

 are very much longer than the body. 



Length of the body 1-J— 2 lines; of the wings 2-3 \ lines. 



Found on Abies excelsa, the spruce fir, with the female in the 

 summer and autumn. 



38, Aphis costata, Zetterstedt. 

 Aphis costata, Zett. Faun. Lapp. i. 559. 3 ; Ins. Lapp. fasc. ii. 

 311. 4. 



