1899] RASPBEERY STEM- BUD CATERPILLAR. 121 



fifteen acres of plants being so damaged that they appeared as if 

 frost-bitten, and also of shoots infested by the larva of this Lampronia 

 rubieUa being gathered by basketfuls. This collection was made on 

 May 12th. 



At May 18th I have had specimens sent me of the caterpillars then 

 beginning to spin up and change to the chrysalis state. So far as I 

 have seen, this change takes place in a bud, but it may very possibly 

 occur in the cane if the maggot has bored from the bud into it, or in 

 the young shoot — in fact, wherever the caterpillar may have been 

 carrying on its destructive work. 



The Kaspberry Stem-bud Moth caterpillars are about a quarter 

 of an inch long, of some shade of red, with black head, and black 

 mark on the following segment ; they have three pairs of claw-feet, 

 which are black, and also four pairs of sucker-feet, and a pair at the 

 end of the tail. When examined through a magnifying glass it will 

 be seen that there is a pale line down the centre of the black head, 

 and that the mark on the following segment is composed of a pair of 

 double-spots. 



Of the caterpillars sent me on May 18th, noted above, one had 

 spun up, excepting at the head end, the colour beneath having become 

 yellower. A chrysalis (spun up in web in the bud) was tawny or 

 reddish yellow on as much of the back from the head onwards as was 

 visible. The wings, which were folded beneath it, were yellowish. 

 The abdomen was of a full pink. 



The above observation was satisfactorily completed by a character- 

 istic specimen of the moth, Lampronia ruhiella, developing from a 

 chrysalis in one of the Raspberry buds sent me. This I first observed 

 to have emerged on June 1st. 



The following are the main characteristics of the appearance of the 

 moth ; see also figure at p. 119 : — The expanse of the wings is a little 

 under half an inch. The head ochrey grey with yellowish face; horns 

 dull brown. The fore wings shiny, with a brown ground, marked 

 with yellow dots and various yellow spots ; of these spots two are very 

 noticeable on the hinder or inner margin, and there are four smaller 

 spots on the costa or fore edge. The fringes are brown, with tips 

 white at the end of the wing. The hinder wings brown, with paler 

 fringes. 



From the notes of life-history given above, it will be seen that this 

 is what may be well described as an attack in ta-o parts. The first is 

 the summer to autumn part, from the opening of the Raspberry flower 

 to the ripening of the fruit, in which no observable damage is done, 

 but still the foundation of the future mischief is laid. Winter is a 

 time of quiescence of the infestation in its little cocoons. The secotid 

 part is the spring to summer attack, of which the damage is well known. 



