78 Cater piUars on Oak 



moth. The caterpillars of these two forms of moth far outnumbered 

 the rest of the species present. The leaf-roller was likewise somewhat 

 more numerous than the winter moth. 



The moths bred out were identified in the British Museum. 

 The following is a list of the species identified, the geometers being 

 identified from their caterpillars. 



Noctuidae. Cahjntnia trapezina L. 

 Geometridae. Oparabia dilulata Bkh. 

 Hyhernia defoliaria CI. 

 Cheimatobia hrumata L. 

 Tineina. 



Sparganothidae. Balodes (Capua) angustiorana Hw. 

 Olethreutidae. Spilonota ocellana SchifE. 



Gypnosoma dealhana Frol. {incarnana Hw. nee Hb.) 

 Tortricidae. Tortrix viridana L. 



Torlrix (Pandemis) ribeana Hb. 

 Archi/ps (Cacoecia) podana Sc. 

 Archips (Cacoecia) xylosteana L. 

 Archips (Cacoecia) lecheana L. 

 Coleophoridae. Coleophora lutipenrlella Z. 



C. trapezina w^as not very numerous, only a few caterpillars being 

 found. The moths hatched out at the beginning of June. These 

 were the largest caterpillars found on the oak, but owing to their small 

 numbers can hardly be classed as pests. 



0. dilutata was also scarce. One caterpillar of this species was 

 found parasitised, presumably by a Tachinid, the egg of the fly adhering 

 to the dorsal surface of the caterpillar. Unfortunately the adult was 

 not bred out. 



Although nothing like so numerous as either, Hyhernia defoliaria 

 ranks next in importance after C. hrumata and T. viridana. Being of a 

 fair size and of an active disposition it causes considerable damage to 

 the leaves. C. hrumata was very numerous and a large proportion of 

 the damage must be attributed to this caterpillar. The caterpillars 

 of this species disappeared about the beginning of June, pupating in 

 the ground below the trees. The use of grease bands to catch the 

 fertilised female as she climbs the tree to lay her eggs should help to 

 keep this pest in check. 



Of the Microlepidoptera, none of the species identified are sufficiently 

 numerous to be considered as pests with the exception of Torlrix viridana. 

 Archips lecheana L. occurred pretty frequently and was successfully 



