18G A Study of the Capsld Buys found oh Apple Trees 



pronotum, sides of elytra and legs yellow. Sparsely pilose. Elytra sub- 

 parallel in S and comparatively more rounded in ?. 



Head small, with large, dark red, compound eyes, nearly touching the 

 pronotum and projecting slightly beyond its lateral margins. Vertex 

 carinated posteriorly. 



Pronotum with a very distinct narrow yellow collar and two very 

 prominent callosities just behind it. Strongly rugose. Posterior margin 

 not emarginate and covers the mesonotum. Sides straight. 



Elytra green with yellow margin; sparsely covered with short thick 

 almost black hairs. Membrane hyaline, two cells with green nervures and 

 with a clouded area round the inner angle of the large cell. 



Antennae medium length; covered with short thick black hairs and 

 longer and finer light hairs; basal joint green and thicker than the other 

 joints. Second joint longest; lower portion green, upper half dark. 

 Terminal joint three-quarters the length of the third joint, both together 

 shorter than the second; both dark. When cleaned and mounted in 

 balsam terminal and sub-terminal joints pinkish brown. 



Legs yellowish green, with short brownish hairs. Tibia with fine 

 brownish spines. Tip of tibia dark and thickly covered with hairs which 

 become thicker and longer as they approach the tip. Tarsi 3- jointed, 

 covered with fine hairs; two basal joints sub-equal, terminal longest; 

 tips dark with curved claws and a pair of transparent arolia. 



The Egg. 



Time of egg-laying. 



The females of P. rugicollis brought from Wisbech from about 

 the third week of June to the beginning of July were enclosed in glass 

 tubes with apple twigs, and were observed to have laid eggs in these 

 shoots. In spite of a careful watch, the actual process of egg-laying 

 escaped observation. It may be that the eggs are laid during the early 

 hours of the morning. There is no doubt that they are laid after long 

 intervals, as in a number of cases there were only two or three eggs after 

 a female had been on the twig for over a week. During the egg-laying 

 period the bug keeps feeding on tender leaves and soft terminal parts of 

 the stems which show the characteristic purple-brown spots. It would 

 be interesting to find out the number of days that a female takes to 

 develop eggs after fertilisation and the time taken to lay all the eggs. 

 We are inclined to think that egg-laying continues all through the later 

 part of the life of an adult female. 



