NOTES ON THE APHIDES OF ROSS-SHIRE 87 



surface of the leaves of birdcherry (Prunus padus), near Evanton, 

 on 20th October. 



Genus Myzus, Passerini. 



Myzics whiteiy Theobald. Apterous and alate females of this 

 species and a single male occurred on currant at Balconie on 

 3rd August. On the 28th July I took an alate female resting on 

 the branch of a fir-tree in the same district, but there were no 

 currants close at hand. On the 12th September an alate male was 

 taken in Balconie garden, and on 15th September I found an 

 oviparous female on the under-surface of a gooseberry leaf at 

 Swordale. She laid an egg on this towards the end of the month. 



Myzus cerasi, Fabricius. This was an abundant pest on wall 

 cherries at Swordale and Balconie from the end of July to the 

 beginning of September. They were preyed upon by Cecidomyid 

 larvae. 



Myzus rosarum, Kalt. I found ovigerous females of this species 

 on rose leaves in Balconie garden on 15th October. 



Subfamily Callipterin^e. 

 Genus Callipterus, Koch. 



Callipterits querceus, Kalt. This species occurred commonly 

 on the under-surface of oak leaves at Balconie on 7th August. 

 There appeared to be two distinct colour varieties the commoner, 

 of which I took apterous and alate females, larva? and nymphs;, 

 is green, with paler legs and antennas ; the other variety, of which I 

 collected alate females, larva; and nymphs;, is pale grey with paler 

 legs, though when examined with a lens it appears to be of a pale dirty 

 ochreous ground-colour mottled with dark grey. Mr Theobald finds 

 no structural difference between these two varieties. I took an 

 apterous female of this species at Beauly (Inverness-shire) on 

 5th October. 



Callipterus nigritarsis. I found nymphs; and alatse of this 

 species on birch at Swordale on 23rd August. 



Genus Eucallipterus, Schouteden. 



Eucallipterus tilice, Linn. -Apterous and alate females of 

 this species occurred on lime {Tilia sp.), at Balconie, on 3rd 

 August. 



