The Moths and Butterflies 



363 



lepidopterous larva is a well-contrived animal for its especial kind of life, 

 which is as different as may be, almost, from that which it will lead after 

 it has completed its metamorphosis. Always when one reads or hears of 

 injurious moths or butterflies it should be kept clearly in mind that the 

 injuries, to crops or fruit or woolen clothing or what not, are caused by the 

 moth or butterfly in its larval 

 stage and never by the flut- 

 tering nectar-sipping adult. 

 The sole compensation, 

 other than the rather imma- 

 terial though perhaps not 

 less real one afforded us 

 through our jesthetic ap- 

 preciation of the beauty 

 and attractive, apparently 

 care-free, flitting about of 



Fig. 517. 

 Fig. 515.— Frontc'fhead of larvaof tussock-moth, //(r»;<!rocaHi/io/c«cos//^»i<i. aiit., antenna; 



md., mandible; mx., maxilla; mx.p., maxillary palpus; //., labium. (Much enlarged.) 

 Fig. 516. — Front of head of old larva of tussock-moth, Notolophus leucostigma, with 



head-wall dissected away on right-hand side to show forming adult mouth-parts 



underneath, l.anl., larval antenna; ant., adult antenna; l.md , larval mandible; 



/.»i.v., larval ma.xilla; i.mx., adult maxilla; lb., larval labrum; /./;., larval labium. 



(Much enlarged.) 

 Fig. 517. — Developing adult head dissected out from head of larva of tussock-moth, 



Notolophus leucostigma. ant., antenna; mx., maxilla; li.p., labial palpus. (Much 



enlarged.) 

 Fig. 518. — Head of tussock-moth, Notolophus leucostigma ; showing adult antennze and 



mouth-parts, mx., maxilla; li.p., labial palpus. Note that the two maxilla; are 



not locked together to form a sucking-proboscis, the mouth-parts of this moth being 



rudimentary and not capable of taking food. (Much enlarged.) 



the butterfly, which the Lepirloptera make for their often disastrous toll on 

 our green things, is the prodigal gift of silk made by the moth species known 

 as the mulberry or Chinese silkworm. Thoroughly domesticated (the wild 

 silkworm species is now not even known), this industrious spinner produces 

 each year over one hundred million of dollars' worth of fine silken thread 



