NOTES ON APHIDES FROM SUTHERLAND 85 



NOTES ON APHIDES FROM SUTHERLAND. 



By Dorothy J. Jackson, F.E.S. j^fW^i-^fi^ 



{Concluded from page ^(^) Z^/O''^ ®^ 



Part H. 



Tribe ApJiidini. 



Sub-tribe Aphidina. -sjy-^ h 



Genus Brachycolus, Buckton. 



Brachycolus hold, Hardy. — Oviparous females and larvae 

 occurred on Holcus lanatiis at Inveran, Invershin, on 

 26th September 1920; and at Swordale, Evanton, oviparous 

 and viviparous females and larvae were abundant on the 

 same plant earlier in the month. In this latter locality 

 the growth of the grass was affected, the leaves of the 

 terminal shoots being very short and stunted. The aphides 

 occurred low down on the inside of the leaves where these 

 were sheathed around the central shoot. 



Genus Aphis, L. 



Aphis sambiicaria, Passerini. — Alate viviparous females, 

 nymphse, larvas and apterous oviparous females were common 

 on the leaves of elder {Savibnais nigra) at Invershin, on 

 17th September. The oviparous females were in many 

 cases clustered close together in groups on the under surface 

 of the leaf, resting with their heads downwards on their 

 first and second pairs of legs and with the abdomen raised 

 vertically and their hind legs in the air. Yellow eggs were 

 to be found on the leaves beside the oviparous females. 

 Some of the alate viviparous females were attacked by a 

 fungus belonging to the Entoviophthoracece. 



Aphis urticaria, Kalt. — Extremely local but swarming 

 upon a tuft of nettles near Inveran, Invershin, and closely 

 attended by ants {For^nica fusca L.). In September 1920 

 only apterous viviparous females, oviparous females and 

 larvae occurred, but in July next year many alate viviparous 

 females were found. 



