The Zoologist — February, 1870. 1995 



ll)e year, lo which I shall recur immediately. Authors state, and 

 I can confirm the statement, that the larvae in question are found 

 rolled up in a spiral on the under sides of rose-leaves. I, however, 

 also observed them resting on the upper surface of the leaves. They 

 are very sluggish, and appear to feed in the early morning or during 

 the evening twilight; whether they feed at night I do not know. 

 I sometimes found them on the same leaf on successive days, from 

 which I conclude they seldom move about during the night. I ob- 

 served no difference of habit between the full-grown larvae and very 

 3'oung ones ; that is to say, larvae which, as far as I could guess, had 

 moulted only once. Dahlbom seems to consider that after the last 

 moult they have a different colour or appearance to what they had 

 previously ; his mistaken reference to Reaumur has betrayed him into 

 this error. 1 could perceive no difference, except in size, between 

 a half-grown larva and one which had spun up. 



With regard lo the number of broods in the year, Brischke con- 

 siders there is but one; Hartig thinks there are more. I believe we 

 may safely conclude the latter is correct, seeing that the perfect insects 

 are found from May to August, and young larvae are met with in the 

 last-named month. 



On attaining its full growth the larva lets itself fall to the ground, 

 where it undergoes its change without spinning up, or it creeps into a 

 crevice in the bark or a split in a paling for the same purpose, or it 

 bores for itself a passage in the pith of a branch of a rose tree which 

 may have been cut oflF: this passage is sometimes from two to three 

 centimetres deep, and in it the larva seems to be able to turn itself 

 round ; at least it is found with its head directed towards the opening, 

 but having its head more or less concealed by frass. 



In this hiding-place the larva passes the winter, and does not 

 change into a pupa until late in the spring : this pupa is of a pale 

 blue colour, resembling our fig. 5, which gives a magnified representa- 

 tion of one ensconced in a branch. For the rest there was nothing 

 peculiar in the appearance of the pupa. The imago was produced 

 from the pupa here figured on the 20th of May. 



The females are infinitely more numerous than the males, the latter 

 being seldom seen. The female is scarcely 5 mm. long, shining 

 black and glabrous, somewhat more brownish on the thorax, and 

 being a little more bluish on the abdomen. The neck is pretty long, 

 and the upper surface is devoid of any hard integument: there is a 

 similar bare place in the middle of the dorsum of the first abdominal 



