HYALOPTERUS ARUNDINIS. Ill 



yello wish-green. Head broad, with flat front. Eyes 

 red. Prothorax and three thoracic lobes darker green. 

 From four to six triangular dorsal green marks ranged 

 transversely. Cornicles green and very small. Tail 

 yellow. Legs pale green. Wings hyaline and delicate, 

 with yellow, insertions, stigma, and cubitus. Rostrum 

 very short. 



Infests many kinds of plums, both wild and culti- 

 vated, being common on Brunus spinosa, P. insititia, 

 &c. It swarms also by thousands under the leaves of 

 the peach and nectarine, producing thereby white 

 hoary masses, which close the pores of the leaves and 

 gums them up with a glutinous secretion. 



Their companies often mix with those of My mis 

 jjersicce. 



Passerini says it also feeds on the grape-vine, Vitis 

 vinifera. Kaltenbach remarks that he has in vain sought 

 for the ApJiis vitis of Scopoli, which is described as 

 green and punctured, with a yellow stain behind the 

 antennge, and having a fuscous stain on the back. 

 Walker suggests that this last insect may be H. ijruniy 

 of Fabr. and others. 



De Geer found H. pru7ii on the apricot, Prunus 

 armeniaca, and shortly describes both the winged 

 male and the wingless female. In September he found 

 an egg of this species covered with a woolly coat, and 

 fixed in the neighbourhood of a leaf-bud. 



Hyalopterus ARUNDINIS, Fahv. Plate LXXV, figs. 



4, 5. 



Aphis anindinis, Fabr., Kalt. 



— calamapliis, Amyot. 

 Hyalopterus arundiniSi Koch, Pass. 



Apterous vivip>arous female. 



Inch. Millimetres. 



Size of body 0-070 X 0'030 1-77 X 0-76. 



