406 NOTES ON THE GENUS APHIS. 



joints of the antennae and the horns of the abdomen are tipped 

 with brown or black; the latter are very short; the feet also 

 are brown, the wings colourless, with a broad pale green fore 

 border, the nervures usually varied with black. It is found in 

 June beneath oak leaves, and has some likeness to the lime 

 Aphis, but the larger size, gayer colours, and embroidered 

 wings of the latter easily distinguish it. 



3. Aphis of the hazel. — This also is a very pretty species. 

 The body, antennas, legs, and wings have a pale lemon colour ; 

 the eyes, the feet, and a dot on the fore border of each upper 

 wing are brown. It is rather larger than the preceding, and is 

 found in June beneath the leaves of the hazel. 



II. Horns of the abdomen long, body generally broader and 

 more convex. The nervures of the wings are variable in some 

 species. 



1. Aphis of the cabbage. — Very abundant in all stages of 

 growth beneath cabbage leaves in August. It is thickly 

 clothed with white down. 



2. Aphis of the white water-lily. — Found in August on the 

 flowers of that plant. When full grown it is entirely black, 

 and has limpid wings with green nervures ; the young ones 

 are paler. 



3. Aphis of the cherry. — It swarms in May beneath the 

 leaves of cherry trees, which it causes to curl up and become 

 covered with a glutinous matter. It has a dull red colour when 

 very young, but on arriving at maturity it becomes black and 

 shining, with the tibiae and third joint of the antennae white. 

 The body is broader and more convex than that of most of 

 the genus. The wings are alike in colour to those of the pre- 

 ceding species, but the arrangement of their nervures differs. 



Lachnus. Some of the larger species of this genus have 

 the penultimate nervure of the upper wing subdivided. They 

 usually inhabit the trunks and young shoots of trees, and 

 among them are Aphis picece, Fabr., A. quercus, Linn, and A. 

 pini, Linn. On a warm cloudless morning in October I saw 

 myriads of Scatopse picea hovering about and settling on a 

 larch tree, near Dolgelly, North Wales ; and among them 

 were two or three Scatopse flavicoliis. They came to feast on 

 the honey distilled by a colony of Aphides that infested a 

 branch of that tree. These latter were of all sizes ; the young- 

 ones greenish brown, the full grown deep brown, and speckled 



