. Elementary lessons on insects. Insects. LEPIDOPTERA 113. 1. The length and form of the antennae and the posi- tion in which they are carried. 2. The mouthparts: com- pare with Fig. 44. Ex- amine a microscopic slide mount of the pro- boscis, if one isavailable. 3. The form and size and relations of fore and hind wings. II. With a pupa in hand note that all the appendages not only enwrap the body, but they are solidly sealed down to it, only the tip of the abdomen being free. III. With a larva in hand, note. 1. The horny head capsule, with its armor plates meet- ing in a V-shaped suture on top
. Elementary lessons on insects. Insects. LEPIDOPTERA 113. 1. The length and form of the antennae and the posi- tion in which they are carried. 2. The mouthparts: com- pare with Fig. 44. Ex- amine a microscopic slide mount of the pro- boscis, if one isavailable. 3. The form and size and relations of fore and hind wings. II. With a pupa in hand note that all the appendages not only enwrap the body, but they are solidly sealed down to it, only the tip of the abdomen being free. III. With a larva in hand, note. 1. The horny head capsule, with its armor plates meet- ing in a V-shaped suture on top. 2. The small pigmented eyes. 3. The minute bristly antennae. 4. The biting mouthparts: a horny upper lip, a pair of stout toothed mandibles, thinner maxillae and labium with palpi of both much reduced in size. 5. The minute spinneret near the middle of the tip of the labium. 6. The jointed legs on each segment of the thorax. Find in them the usual leg parts. Use slide mounts for this. Fig' 46.—The corn ear-worm, Cirphis unipunctata: a, the moth; b, the larva that eats into the corn ear; c, the eggs; d, the pupa (from Severin, after Howard).. 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 Needham, James G. (James George), 1868-1956. Springfield, Ill. , Baltimore, Maryland, C. C. Thomas
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Keywords: ., bookcentury1900, bookcollecti, bookdecade1920, booksubjectinsects
