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



20 j Ent. Syst. iv. 214 17 ; Syst. Rhyn. 296. j Gmel. ed. Syst. 

 Nat. i. 5. 2206. 50 ; DeG. Ins. iii. 60. 9. t. 4. f. 1-5 ; Schrank, 

 Faun. Boic. ii. 1. 1 ; Gotze, Ent. Beitr. ii. 317. 29 j Latr. Gen. 

 Crust, iii. 173; St. Farg. et Serv. Enc. Meth. x. 246; Kalt. 

 Mon. Pflan. i. 10. 2 ; Sir Oswald Mosley, Gard. Chron. i. 684. 



AchiUaphis, Amyot, Ann. Soc. Ent. Fr. 2 me serie, v. 474. 2. 



A. Achillas ?, Fabr. Sp. Ins. ii. 385. 13 ; Mant. Ins. ii. 315. 

 16 ; Ent. Syst. iv. 213. 15 ; Syst. fthyn. 296. 15 ; Gmel. ed. Syst. 

 Nat. i. 2205; Kalt. Mon. Pflan. i. 141. 110. 



This and A. Absinthii are alike in structure, and may be one 

 species : the latter has very bright red eyes, and its colour, which 

 somewhat differs from that of the former, may be owing to the 

 plants on which it feeds. A. Millefolii dwells on Achillea Mil- 

 lefolium, milfoil, A. Pfarmica, sneezewort, A. ageratum, sweet 

 maudlin, and Chrysanthemum leucanthemum, ox-eyed daisy, from 

 June till November. 



The viviparous wingless female. It is pale whitish green, oval, 

 convex, somewhat hairy, and rather large : each segment of the 

 back has three large dark green spots, and many small black dots : 

 the head is dull reddish brown : the feelers are black, and longer 

 than the body : the eyes are dark red : the mouth is black ; its 

 base is dull yellow : the nectaries are black, and as long as one- 

 eighth of the body : the tip of the abdomen is also black, and has 

 the appearance of a short tad, being long, compressed, and curved : 

 the legs are long, hairy, and black ; the base of the fore- thighs' 

 is yellow. The young one is more flat and linear and less spot- 

 ted, and the base of its middle thighs is yellow. An Aphidius, 

 an Allotria, Ceraphron Carpenteri and Asaphes vulgaris have been 

 reared from this insect. After shedding the skin it is pale green : 

 the head is pale red : the antennas and the legs are yellowish 

 white ; the tip of the abdomen, the nectaries and the thighs are 

 pale green. 



1st variety. Deep green with a glaucous tinge, and having 

 darker green spots and white bands ; the latter interrupted 

 along the back : the feelers are much longer than the body : the 

 base of the middle and of the hind-thighs and the whole of the 

 fore-thighs except their tips are yellow : the body is reddish to- 

 wards the head : the underside of the abdomen is green. 



The viviparous winged female. The body is black : the abdo- 

 men is green, and has a row of black spots along each side of its 

 back : the feelers are black, and longer than the body : the eyes 

 are dark red : the mouth is dull green with a black tip : the tip 

 of the abdomen is hairy and like that of the wingless female : the 

 nectaries are black, and as long as one-sixth of the body : the 

 legs are black ; the base of the fore-thighs is yellow : the wings 

 are colourless or slightly tinged with gray, and a little longer 



