NOTES ON APHIDES FROM SUTHERLAND 51 



NOTES ON APHIDES FROM SUTHERLAND. 



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



Part I. 



During September 1920 I spent a little time in the 

 collecting of Aphides in the neighbourhood of- Invershin, 

 Sutherland, and I was fortunate in obtaining several 

 interesting and little-known species. Owing to the kindness 

 of Mr F. V. Theobald, who has identified them for me, 

 I am able to record them in the following notes. 



Amongst the twenty species taken two {Pteroconivia 

 jacksoni and Amiraphis ceiitaiiriellti) were new to science 

 and have been described by Mr Theobald ^ (5) ; several are 

 unrecorded from Scotland, and all, as far as I can ascertain, 

 are new records from Sutherland. The majority of the 

 species I had not met with before in Ross-shire or Caithness, 

 and they are therefore absent from my previous lists (2 and 3). 

 From the abundance and variety of the species obtained 

 in the short time at my disposal, I have no doubt that 

 a further and more thorough search in this interesting 

 locality would be well repaid. Within a small radius in 

 this district a considerable variety of vegetation occurs. 

 The marshy rush-covered meadows along the north bank 

 of the Kyle of Sutherland proved a particularly productive 

 collecting ground, while in the sheltered valley of the Shin, 

 amongst the birch woods where Formica rufa abounds, 

 a variety of Aphides were found, several of them closely 

 attended by the ants. For the identification of the ants 

 and of certain grasses and sedges mentioned below, I am 

 indebted to Mr W. Evans. . . . The species dealt with have 

 been arranged according to the classification adopted by 

 Dr A. C. Baker (i). 



1 The numbers in brackets refer to the references at the end of 

 the paper. 



