241 CLASSIFICATION OF INSECTS. 



a slender twig of the plant on which the larva feeds ; in 

 this case the larva remains unchanged during the months 

 of autumn, winter and spring. Imago with antenncB seven- 

 jointed, of which the third joint is always elongate, and 

 the apical ones always form a clubj the mandibles are 

 longer than in the preceding order, acute at the apex, and 

 internally bidentate ; maxill(B with the lacinia obtuse and 

 hirsute, the galea rather obtuse and distinctly articulate, 

 and the feelers long and six-jointed ; labium short, with 

 the ligula distinctly trilobed, the feelers four-jointed ; ocelli 

 three ; segments of the body fully developed ; oviduct as 

 in the Allantites. Inhabits flowers and leaves ; flies in the 

 sunshine. Ahia, Zaresa, Cimhex, Trichiosoma, 



Lydites. Larva smooth, cylindrical, with six short, ar- 

 ticulate, and no prehensile legs. Feeds on the leaves of 

 trees, inhabiting a web of its own making. Pttpa changes 

 in a silken cocoon on the stem of the trees it inhabits, or 

 on the ground. Imago with the antenvKB composed of 

 seventeen to thirty joints, filiform, and attenuated exteriorly; 

 mandibles long, acute at the apex, and having one tooth 

 internally ; maxillce with the blade and galea obtuse, the 

 feeler long and six-jointed ; labium short, ligula more pro- 

 duced, trilobed ; ocelli three ; head 

 large, orbicular; wings ample, with 

 numerous nervures ; legs short ; po- 

 deon fully developed; body short and 

 robust. Inhabits woods, flying in the 

 sun, settling on leaves, and occasion- 

 ally, but rarelj^, on flowers. Tarpa, 

 Loi.hyrus rufus. Lyda. io/j/j^/n/s, although differing 



in having the antennae composed of fewer joints and pecti- 

 nated in both sexes, can scarcely be distinguished as be- 

 longing to a separate order : it frequents the spruce fir, 

 spinning its little cocoon on the twigs. 



