Reports to the Koont of .Igyiiiittiirc. 2>1 



The trees .should be cut ilown and burnt in the winter when the 

 lorvie and pupiu are safely housed in the wood. There are no 

 remedies for the Sirex Flies, hut all danin^'ed and diseased tiuilxjr 

 should Ini cleared out so as to check their increase. Damaged or 

 unhealthy trees lue mainly attacked. 



The Poplar Sawfly. 



( Clad i us vi m i nal is. ) 



Some larvie sent to the Board of Agricvilture from lirondeshury 

 attackini; poplars wen? those of the IVjplar Saw-fly {Cliulius 

 viininaJL'i). 



The eggs are laid on the leaf-stalk of the i)oplar, which becomes 

 swollen and bends over on each side so as to cover the eggs. 



The young larv;e are gi*een with black heads ; at the .second 

 moult they Ijecome omnge and green with twelve large black marks 

 on each side, etc. When full fed they are entirely orange witii the 

 black marks very prominent. 



The iloui^le cocoon is usually spun beneath loose bark or may l>e 

 l>etween the leaves. They feed in companies and eat the epidermis 

 usually on the under side of the leiif. 



These is one brood which occurs in August and Septemljer. 



The in.sect is verj' common and the larvie sometimes do some 

 liann to the leafage of young trees. 



They also occur on the willow and osier. 



Sawfly Larvae on Willows. 



Some Sawfly larvio, sent i)y a coiTespondent from Heading, 

 belonging to the genus Xematus, were reiMjrtotl as attacking willows. 

 A great numl)er of Sawfliea feed (»n the willow and osier, and several 

 of this genus Xnnatus have larva* very similar to the two sent. It 

 was not jHt.ssible to say for certain what the species wa.s unle^ss the 

 jHjrfect insects were bred, but it was probably the species known as 

 Acmatus ronjmjatu'i, Pbm. ; but at the .same time there were slight 

 diflerences .seen in the larva^ sent and the description of tho.se of that 

 s|>ecies given by Cameron. Another species has similar green and 

 oninge larva*, X. croccus, Fall., but the black markings in those fn'Hi 

 IJeading tlid not agree. 



Nematva pavitluji, I^p., docs most harm to osiers in this c«>untry ; 

 but tlu'y were not that specie,'', as the orange marks are larger, and 

 there were certain black <lots which are not seen in X. pdvidu*. 



