254 



FOREST ENTOMOLOGY. 



spicuous in the foliage to the naked eye. The caterpillars may be 

 beaten from the foliage in September and October. 



The eggs are deposited on tbe needles of the Scots pine. 



The caterpillars are lightish-green in colour. In the early stages 

 they may be compared to thread-like worms, beautifully harmonising in 

 colour with the foliage. When full-grown they change in colour, but 

 still harmonise with the foliage. The prevailing colour is sea-green, 

 with a whitish longitudinal line down the back, and a yellow line 

 along each side of the body, running parallel with the dorsal line. 

 The caterpillar (fig. 238) is from 1| to 1| inch in length. They are 

 full fed about October. They pupate in the soil. 



The pupa (fig. 239) is light dark-brown in colour. It may be noted 



Fig. 238. Larva of Bordered White 

 Moth. (From 'Forest Protection,' 

 by W. R. Fisher.) 



Fig. 239. Pupa of Bordered White 

 Moth. (From ' Forest Protection,' 

 by \V. R. Fisher.) 



Fig. 240. Fidonia piniaria (male). (From 

 'Forest Protection,' by W. R. Fisher.) 



Fig. 241. Fidonia piniaria (female). (From 

 'Forest Protection,' by W. R. Fisher.) 



that in this insect the pupal period is of comparatively long duration, 

 and Altum points out 1 that full-fed caterpillars and pupa are subject 

 to being attacked by several natural enemies, both fungi and insects. 



The male moth (fig. 240) has very strongly pectinated antennas, 

 whilst those of the female are quite simple. The body is slender, 

 whitish-grey, and approaching to yellow at the extremity. The pre- 

 vailing colour of the wings is a mixture of dark-brown and white. 

 The apical portion of the fore wing a space about ecmal to one-half 

 of the wing is a brown-black colour, and the remainder of the wing 

 is practically white, with brown streaks. The under wings are of a 

 similar colour, but the white portion is more mixed with the brown 

 colour, and sometimes roughly divided into white and brown spaces. 



1 Forstzoologie. 



