. Entomologia economica per gli agricoltori e i coltivatori di frutta e per uso come un libro di testo nelle scuole agrarie e collegi;. Insetti e parassiti. 242 Un economico entomologia. club è brusca in corrispondenza della punta e non tirate fuori in un gancio o recurved. In skippers o Hesperids, la testa è ampia, gli occhi sono relativamente piccole, i tastatori sono ampiamente separati, impostare vicino agli occhi e terminato da una punta aguzza che è spesso recurved o agganciato. Una serie di grandi dimensioni del vero farfalle si distingue per avere la coppia anteriore di piedi più o meno interrotta o imperfetto e queste, il "spazzola-

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. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Insects; Pests. 242 AN ECONOMIC ENTOMOLOGY. club is abrupt at the tip and not drawn out into a hook or recurved. In the skippers, or Hesperids, the head is broad, the eyes are comparatively small, the feelers are widely separated, set close to the eyes, and terminated by a pointed tip which is often recurved or hooked. A large series of the true butterflies is distinguished by having the anterior pair of feet more or less aborted or imperfect, and these, the "brush-footed " butterflies, are classed in two families, Fig. 251. 00^ Fig. 252. ^ a, head of Papilio, show- ing where antennae are in- serted ; b, same of an Hesperid.. a, foreleg of a brush-footed butterfly entirely aborted ; b, o{ Lyccena, male, tarsus one-jointed. the Nyniphalidcc, containing moderate-sized or large species, and the LyccenidcB, containing small species, in which the colors are blue or coppery, or have the under sides marked with fine, thread-like lines. They are the "blues, " "coppers, " and " hair-streaks." Among our most common species of the first family is the "milk-weed butterfly, " Danais archippus, quite a large red- brown insect, with the wing-veins broadly black marked. It becomes abundant in late summer and foil, and its caterpillar, green in color, marked with black lines, and furnished with rather long, black, hair-like tentacles, may be often seen feeding upon milk-weeds. This species will serve to typify the family to which it belongs, and is easily raised by any one curious to watch its transformations. If the caterpillar be confined with a sufficient supply of fresh leaves, it will grow to about an inch and a half in length, will then fasten itself by means of its hind feet to a little pad of silk, and will change to a chunky, bright-green chrysalis, or pupa, marked with small golden spots, one of the pre

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• bookcentury1900
• bookdecade1900
• booksubjectinsects
• bookyear1906