Mr. F. Walker's Descriptions of Aphides. 421 



XLIII. — Descriptions of Aphides. By Francis Walker, F.L.S. 



[Continued from p. 20.3.] 



49. Aphis Ulmaria, Schrank. 



Aphis Ulmaria, Schrank, Faun. Boic. ii. 1. 111. 1221. 



Aphis Onobrychis, Fonscol. Ann. Soc. Ent. x. 169. 9. 



Aphis Pisi, Kalt. Mon. Pflan. i. 23. 11. 



Aphis Lathyri, Sir Oswald Mosley, Gard. Chron. i. 684. 



This species, the green Dolphin, is one of the largest of the 

 group ; it feeds on the following plants : Spiraa Ulmaria, Genista 

 anglica, Spartium Scoparium, some other species of these genera 

 and of Cytisus, Colutea arbor escens, Lathyrus odoratus, L.praten- 

 sis, Pisum sativum, P. arvense, Phaseolus vulgaris, P. multiflorus, 

 Vicia Sepium, V. sativa, V. Faba, Ervum, Hedysarum, Onobry- 

 chis, Lotus corniculatus, L. uliginosus, Trifolium pratense, T. re- 

 pens, T.filiforme, Ononis repens, O.hircina, Geum urbanum, Epilo- 

 bium montanum, Capsella bursa-pastoris, Charophyllum temulum, 

 C. sylvestre ; the Geum and following species are inserted on the 

 authority of Kaltenbach. It thus manifests a decided preference 

 to leguminous plants, and may sometimes be found in green- 

 houses, where, as usual, it appears much earlier than in unsheltered 

 situations. It feeds also on Artemisia Absinthium and on Tana- 

 cetum vulgare. 



The viviparous wingless female. It is large, yellowish green, 

 shining, slightly oval and convex, rather long and narrow, and 

 having three green stripes along the back : the feelers are brown, 

 green at the base, and nearly as long as the body : the eyes are 

 dark brown : the mouth is pale green ; its tip is brown : the nec- 

 taries are pale green, and nearly as long as one-fifth of the body ; 

 their tips are brown : the tip of the abdomen is long, and resem- 

 bles a short tail. When young it is tinged with white, and has 

 three vivid green stripes along the back : its feelers are yellow, 

 with brown tips. 



1st variety. Grass-green : the feelers are black, green at the 

 base, and longer than the body : the eyes and the tip of the 

 mouth are black : the nectaries are brown, green at the base, 

 black at the tips, and as long as one-fourth of the body : the 

 legs are very long ; the thighs are green with reddish brown tips ; 

 the shanks are dull yellow ; their tips and the feet are black. 



2nd variety. Pale green. 



3rd variety. Pale yellowish green : the nectaries are pale yel- 

 low; their tips are black : the thighs have pale red tips. 



4th variety. The feelers are black except the base, which is 

 yellow or green . the mouth is also green. 



