Insects most injurious to Cultivators. 



Genus Ditula Stcj)/ie)is, Illustrations Brit. Ent., vol. iv. p. 83. (Ditutos, a 

 Greek word, signifying the possession of a double gibbosity; in allusion to the 

 long and bifid crest of the thorax.) Syn., Astsitia Hilhiwr, 



Species, Ditula angustiorana Steplieiu. Tortrix angustiorana Haworth, Lep. 

 Brit., p. 429, 



The narrow-winged Red-bar. 



" Anterior wings oblong, narrow, obtuse, of a smoky testa- 

 ceous hue, with an obscure, oblique, brownish streak or spot at 

 the base, towards the inner margin ; a waved broader streak of 

 similar colour arising from a palish blotch on the costa, and 

 reaching to the anal angle ; beyond which, on the costa, is a 

 short ustulated brown one, widest on the costa, and narrowing 

 towards the hinder margin, which is faintly variegated with some 

 palish lines : posterior wings dusky, or black. 



" The male is smaller, of a deeper hue ; sometimes blackish 

 brown, with very dark, nearly black, markings. 



" Extremely variable in size, and in the strength and intensity 

 of its colours and markings." (Stcp/iefis, loc. cit.) 



I have not succeeded in detecting the female in the act of de- 

 positing her eggs, nor in discovering them upon the tree ; 1 have 

 no doubt, however, that, as the moth is produced in July, and 

 the caterpillars are not seen until the following spring, they 

 are deposited in patches on the twigs, and that they are covered 

 over with a glutinous coat, which hardens during the summer, 

 and forms a protection, during the winter, to the eggs beneath, or 

 to the young caterpillars, in case they should be hatched earlier, 

 like those of the little ermine moth. 



Fig. 1. represents a bunch of young leaves tied together by 

 the threads of the caterpillar, which is seen at b, pardy extended 

 from amongst the leaves, of the natural size ; c, the larva, mag- 

 nified ; r/, the chrysalis, magnified ; c, the moth; /, ditto mag- 

 nified. 



