42 



ZOOLOGY 



The wood-feeders (Xylotropicls ^ arc chieflj- medium to 

 small, clear-^\dngecl species which fly at dusk or in daylight. 

 Their larvte hve in stems of squash, cucumber, etc., and bore 

 into shru))s and trees (Fig. 42). 



The Tiger-moths f Arctiidse -) are for the most part con- 

 spicuously strijx'd or spotted. The larvte are very hairy. 

 The ).)est known is the furry, brick-red and black Isabella 



Fig. 41. — P7ii7a(nprf«s /wndorus, the Pandorus sphinx. Xat. size. Photo. 



by w. n. C. P. 



caterpillar, which can be seen during Octolior in New England, 

 hurrjing nervously in search of winter cjuarters. 



The silkworms (Bombycidse ■') include, as a rule, large and 

 thick-bodied uKjtlis. Here belong the only moths of use to 

 man. Of these, Boinbyx mori * is tlie most generally emi)loyed 

 in tlie manufacture of silk. It originally came from China, 

 feeds on the leaves of the white mulberi-y, and is reared chiefly 



1 xuJon, wood ; tnpho, to feed; because tlie hir\'a? feed on wood. 



2 From arkfo.^. bear. 



^ Boml^yx-hke. .Aristotle caUcd the rustling silk 6om/jo.T; ; hence the name 

 Bombyx for the silkworm. 

 ^ moras, a mulberry tree. 



