Insect Pests. 



THE SLUGWORM OF THE PEAR AND CHERRY. 



{J'J/-iiicu/iqin liiiuicinii. De (Jeer.) 



The records of this pest doing damage all show that it is most 

 abiindaiit in August, Septeniljer and October. 



No damage has so far been recorded as caused by these repulsive- 

 lool^ing larvae earlier in tlie year in Britain. 



Cameron (1) states: "The usual time i'or the appearance of the 

 larva' is about the middle of June, and from tliat time onwards thev 

 are in more or less abundance to tlie end of September or even 

 October." 



In America the sa\\-fly is double brooded, " the first Ijrood 



appearing on the wing in 

 the Xorthern States and 

 Canada fi'om about tb.e 

 tliird week in i\Iay until 

 the middle of dune," the 

 second Ijrood occurring 

 aljout the second 'week 

 m July (2). I have found 

 in England, as in America, 

 two distinct generations: 

 the first Ijrood may do 

 harm, but not as much 

 as ulie second, for thev 

 are fe\\-er in numbers. 

 This sawtly is extremelv 

 erratic in appearance. 

 The " slugworms " sud- 

 denly seem to appear on 

 a tree and as often rapidly 

 vanish when they are 

 mature, and no signs may 

 be seen of tliem again for 

 years. Yet in a neigh- 

 bouiing orchard they may 

 a]iiK'ar year after yeai-. 

 Their attack is of frequent 

 occurrence in most ]iarts 

 of England. In 1875 this 

 insect seems to liave occasioned mucli loss in various districts in 

 England. In 18,S1 it was not only very destructive in England, but 



I'K.O; .IN'I. rilmiKY sl.|-ia\cMLll {h'ri,«;lii,,f,i limn 

 AliUI.T S.Ul?--I,Ii;.s AN'li li.V3r.Vi;Eli I.E.VK. 



