New British Aphides. xxxix 



Aphides on the Medlar (Mespilus germanica). 

 Aphis inserta. 



The vAngless viviparous female. — When very young the body is oval, convex, pale 

 green : the limbs are darker, except when the skin has been lately shed, and then they 

 are white : the antennae are less than one-half the length of the body : the eyes are 

 red : the tubes are about one-twelfth of the length of the body. When full grown the 

 body is pale yellow mottled with green, or having three irregular green stripes on the 

 back : the limbs are yellow : the antennae excepting the base, the tips of the rostrum 

 and of the tubes, the knees, the tarsi, and the tips of the tibiae, are brown. 



Found in April. 



Aphis nutricata. 



The wingless viviparous female. — The body is rather flat and broad, especially to- 

 wards the hind part, and of a beautiful soft fresh green colour mingled with yellow : 

 the antennas are not more than one-third of the length of the body : the tubes are pale 

 green with brown tips, and about one-eighth of the length of the body : the legs are 

 pale green ; the tarsi and the tips of the tibiae are brown. 



Found in the beginning of July. 



Aphis mactata. 



The winged viviparous female. — The body is small and black : the abdomen is 

 green, with two or three transverse bands at the tip and a row of black spots on each 

 side: the borders of the prothorax are green : the antennae and the rostrum are black ; 

 the former are hardly more than half the length of the body ; the base of the latter is 

 green : the tubes are black, not more than one-twentieth of the length of the body : the 

 legs are pale yellow and moderately long ; the tarsi, and the tips of the thighs and of 

 the tibiae, are black : the wings are colourless and very much longer than the body ; 

 the squamulae are very pale yellow ; the stigmata are pale dull green ; the veins are 

 brown. 



Found at the end of May. 



Aphis insita. 



The winged viviparous female. — While a pupa it is linear and pale green : the an- 

 tennae are green with light brown tips : the legs are very pale green ; the tarsi are 

 brown. The winged insect is small, light grass-green, with three black stripes on the 

 thorax : the antennae are black and a little longer than the body : the eyes are dark 

 red : the rostrum is pale green with a black tip : the tubes are also pale green and 

 about one-seventh of the length of the body : the legs are pale green and moderately 

 long ; the tarsi, and the tips of the thighs and of the shanks, are black : the wings are 

 colourless and much longer than the body ; the squamulae are very pale green ; the 

 stigmata are light green ; the veins are brown. 



Found at the end of May. 



