. Elementary entomology . butterflies which flit along the road- sides in spring. Others are blackish or bluish above, often with two or more fine, threadlike tails extending from the hind-wings, and are marked with fine, hairlike streaks on the under- surface, which has given them the name of " hair ; The larvae are quite different from other cater- pillars, being flat, elliptical in outline (with the head retracted), and quite sluglike in appearance. Very few of them are ever injurious, the worst offender being the cotton-square borer {Uranotcs melli- nns), which bores into
. Elementary entomology . butterflies which flit along the road- sides in spring. Others are blackish or bluish above, often with two or more fine, threadlike tails extending from the hind-wings, and are marked with fine, hairlike streaks on the under- surface, which has given them the name of " hair ; The larvae are quite different from other cater- pillars, being flat, elliptical in outline (with the head retracted), and quite sluglike in appearance. Very few of them are ever injurious, the worst offender being the cotton-square borer {Uranotcs melli- nns), which bores into cotton squares and occasionally attacks beans and cowpeas by eating into the pods. The four-footed butterflies (Nymphalidae) include most of our common larger forms, and are so called on account of the great reduction of the fore-legs ; this makes them of no service in walking, and the legs are folded on the breast. The common monarch, or milk- weed, butterfly (Anosia plexippns), whose green, black-ringed caterpillars feed upon the foliage of the milkweed, is a good example of the family. The spiny elm caterpil- lar, already described (see p. 63), also belongs here. The dark, reddish-brown butterflies of the hop mer- chant {Polygonia comma) are of interest, for when they fold their ragged- edged wings and alight Fig. 270. The acadian hair- streak (Thecla acadica Edw.), underside of female (Photograph by Fiske)
Size: 2562px × 1952px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
