FURTHER NOTES ON APHIDES 157 



FURTHER NOTES ON APHIDES COLLECTED 

 PRINCIPALLY IN THE SCOTTISH HIGHLANDS. 



By Dorothy J. Jackson, F.E.S. 



During the summer of 191 8 I collected several more species 

 of aphides in Ross-shire, and I also found that some of the 

 species which I had recorded from this county the previous 

 year were equally common in Caithness. As the latter are 

 probably the most northerly records of these aphides I 

 include them in the following notes. Mr F. V. Theobald 

 has kindly helped me with the identification of the species. 



Family A P H I D I D ^. 



Subfamily Aphidin^. 



Genus Macrosiphutn, Passerini. 



ATacrosiphum di?-hodu?n, Walker. Alate viviparous females 

 occurred on rose at Stirkoke, Wick, on 8th September, and apterous 

 viviparous females were common at the same time on roses under glass. 



Macrosiphum epilobii, Theobald. Alate and apterous viviparous 

 females, larv?e, and nymph ae were common on the terminal shoots 

 of willow herb {Epilobiuni) in the garden at Swordale, Evanton, on 

 icth August. 



Macrosiphum grauarii/ni, Kirby. I took an apterous viviparous 

 female on oats near Wick on yth September. 



Macrosiphum lactucce, Schrank. Alate viviparous females were 

 abundant on currant and gooseberry at Stirkoke, Wick, on the 9th 

 September. 



Macrosiphum milkfolii, Fabr. I found this species thickly 

 clustered on the flower-stalks of Achillea miUefoIiu7?i at Beauly, 

 Inverness-shire, on the 17th August. Apterous viviparous females 

 and larvne were the most abundant, but apterous oviparous females 

 and nymphse, from which the winged males emerged later, also 

 occurred. I took this species less commonly at Swordale, Evanton. 



Macrosiphum pisi^ Kalt. Alate and apterous viviparous females 

 were common at Swordale, Evanton, on broad beans and clover 

 from the end of June to the end of July, and apterous viviparous 

 females and nymphse on beans and vetch near Wick on the 7th 

 September. 



Macrosiphum rosce, Linn. Apterous and alate viviparous 

 females were abundant on roses under glass at Stirkoke, Wick, on 

 the loth September. 



