364 The Moths and Butterflies 
ready for the loom. In Italy and Japan nearly every country household has 
its silk-rooms in which thousands of the white “ worms” are carefully fed and 
tended by the women and children, and from which comes enough raw silk 
to furnish a good share of the annual income of each of these households. 
The reader who would undertake the collecting of moths and butterflies, 
or the rearing of caterpillars in home “ crawleries,” is referred for some 
specific directions for this work to the appendix of this book, p. 635 et seq. 
The order Lepidoptera may be most conveniently divided into two prin¬ 
cipal subgroups (suborders they are often called), namely, the Heterocera, 
F IG . 519.—Larva of obsolete-banded strawberry leaf-roller, Cacoecia obsoletana. (Photo¬ 
graph from life by Slingerland; natural size in lower corner and twice natural size 
above.) 
or moths, and the Rhopalocera, or butterflies. All butterflies have antennae 
which are slender (filiform) for most of their length, but have the tip expanded 
or thickened, forming an elongate spindle-shaped dilation or “club”; the 
moths have their antennae variously formed, as wholly filiform, pectinate, 
