114 First Report on Economic Zoology. 



Insects on Osiers and Willows. 



In answer to a request for names of insects observed by Mr. 

 Marsh, of Milford School, near Godalming, who gives instruction in 

 Basket-work, and who is growing the different varieties of Willows 

 and Osiers with a view of comparing them, and also finding out 

 something aljout their culture and what insects affect them, the 

 following reply was sent : — 



As far as one can say from your descriptions of the insects attacking 

 your willows and osiers, they are as follows : — 



(1) The Minor Shoulder Knot Moth {Eimncla viminalis). The 

 moth appears in July and August, the larva in May ; the pupa is 

 subterranean. All the larvfe of this genus live exposed and extended 

 along the stems of plants. 



(2) The larvae of Syi-phidte or Hover Flies ; they are not injurious, 

 but beneficial, being Aphis feeders. 



(3) A green Aphis, undoubtedly Siphocoryne ca-prm, Fabricius. It is 

 found on all willows and occm's from April to July. It is fairly common 

 round Guildford, Godalming and that part of SuiTey. 



(4) This Aphis is called Melanocanthus salicis, Linn. It is 

 especially found on Salix viminalis. The wingless forms appear in April, 

 the winged females from the end of June throughout July. It is recorded 

 from yom- district (Guildford) and I have found it in abundance on osiers 

 at Wye ; it is also recorded from Kentish Town. 



(5) This Aphis is Ghaitophorus salicivorus. Walker. It varies much 

 in hue. They are often seen brick red in colour. 



The osier has a great number of insect pests, especially amongst 

 the sawflies, cecids or gall midges, moths and beetles. 

 A list of the more important is being prepared. 



Insects on Elm and Willow. 



{Schizoneura lamiginosa, Hartig., and Lachnus viminalis, Fonsc.) 



Specimens of Aphides attacking elm and willow were received 

 in October, 1901, from Miss J. Burroughs Norgate, from Enfield. 

 One, a large gall on the elm, proved to be the work of an Aphis of 

 the same genus as the White Woolly Aphis or American Blight. It 

 is known as Schizoneura lanuginosa. The Willow Aphides Lachnus 

 viminalis, Fonsc. The coiTespondent stated that her attention 

 was called to this aphis by the number of wasps hovering over a 

 lilac bush beneath the willows. They were feeding off the gummy 

 honey-dew. The large masses of aphides were then discovered on 

 the willow- in their t}^)ical position. William Curtis noticed that 



