. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. t The White Flies or Aleyrodids in any northern greenhouse in which orange or lemon trees occur. It is found in the south also upon the china-berry tree, upon viburnum, cape jessamine and the water oak. The follow- ing life history account is drawn up from observations made in greenhouses in the city of Washington. The insect passes the winter in t
. The insect book [microform] : a popular account of the bees, wasps, ants, grasshoppers, flies and other North American insects exclusive of the butterflies, moths and beetles, with full life histories, tables and bibliographies. Insectes; Insects. t The White Flies or Aleyrodids in any northern greenhouse in which orange or lemon trees occur. It is found in the south also upon the china-berry tree, upon viburnum, cape jessamine and the water oak. The follow- ing life history account is drawn up from observations made in greenhouses in the city of Washington. The insect passes the winter in the full-grown larval condition. The adult insects issue during April and begin to lay their eggs about or before the middle of the month. About twenty-five eggs are laid by each female. The eggs are very delicate, pellucid, and each possesses a slender petiole or foot-stalk about one-third the length of the •'=szrr:>:3S><9afcC3£fS!c:. Kig 141.—Aleyrodes citri. 1 From Insert ) egg proper. In two weeks the young larva hatches. It is com- paratively active and crawls a short distance from the egg-shell before beginning to feed. In from two to four weeks it molts and by the middle of June three skins have been cast. In molt- ing the insect curves the abdomen upwards at moie than right- angles, moving it occasionally up and down. It shrinks away from the side margin until it occupies only about one-third of the original Literal space. The skin then splits at the anterior end or underneath the head. Then the head and prothorax are pushed 248 ' Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Howard, L. O. (Leland Ossian), 1857-1950. Toronto : W. Briggs
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1901
