﻿12^ ~n^^ 



577. 

 APHIS TILIvE. 



The Lime-tree Aphis. 



Order Homoptera. Fam. Aphidae. 



Type of the Genus, Aphis Tilise Linn. 

 Aphis Linn., Fab., Lat., Curt. 



Antenna considerably longer than the body, often as long as the 

 wings, setaceous and naked, inserted close to the inner margin 

 of the eyes in front of the face, composed of 7 joints, two basal 

 stout and oblong, 1st the stoutest, remainder slender, 3rd very 

 long, 4th only half as long, 5th and 6th about the same length, 

 7th considerably shorter and more slender, with a few hairs at 

 the apex (4). 



Trophi arising at the lower part of the face between the anterior 

 coxae (F). 



Labrum short broad and subconic (3). 

 Mandibles and MaxiUce slender. 



Labium bent under the breast, and united to the antepectus, 

 not longer than the head and rather stout in the males (2 the 

 profile), composed of 4? short oblong joints, 2nd the stoutest 

 and curved, 4th the smallest ovate-conic and pilose : longer and 

 slenderer in the female (F). 

 Head immovable, transverse-convex {\ front view): face transverse- 

 ovate and very much deflexed beneath (1, m, underside of head) : eyes 

 globose, remote, lateral, not very prominent : ocelli remote, 1 placed 

 near to the inner margin of the eyes, the 3rd close to the anterior 

 margin of the forehead. Thorax oblong, the collar very long in the 

 male : scutellum semiorbicular. Abdomen elongate-conic with 2 

 tubercles or tubes on the 5th? segment in the males, always elongated 

 in the females with a horny process beneath the apex (F). Wings 

 membranous, deflexed in repose ; superior twice as long as the body, 

 ample, the marginal furcate cells short ; inferior much smaller, with 

 2 slightly oblique nervures, remote at the costa : Females generally 

 apterous (F). Legs slender and long, especially the hinder pair : 

 thighs elongated in the females as well as the tibiae, especially in the 

 hinder pair, which are not curved: tarsi short, biarticulate, basal 

 joint minute, 2nd long and clavate : claws curved and acute (6, fore 



leg). 



T11.1JE Linn.— Curt. Guide, Gen. 1047.29. 



Yellow-ochreous ; antennae not so long as the wings, black, 3rd 

 joint sometimes with a yellow ring at the middle, the base of 

 the 4th, 5 th and 6th annulated with the same colour ; orbits of 

 eyes, sides of collar and 2 spots on the metathorax, fuscous : 

 abdomen with 2 very short tubercles, a double row of black 

 spots down the back and smaller ones on each side : superior 

 wings with the costa, a broad margin to the stigma, which is 

 yellow, and all the nervures at the apex, fuscous, the latter 

 forming 6 elongate-trigonate spots on the margin of the supe- 

 rior, and 2 on the inferior wings : Legs rather short, hinder 

 thighs black, except at the base, their tibiae black only at the 

 base, all of them fuscous at the apex, as well as the tarsi. 

 In the Cabinets of Mr. Dale, Mr. Walker, and the Author. 



