. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THE CIGAR CASE-BEARER, 37 DESCRIPTION. THE EGG. The minute egg (fig. 10, d), which is hardly visible to the naked eye, is pale yellow, and over the surface is closely marked with ele- vated ridges. On the average, it measures by mm. and is almost round in outline. THE LARN'A AND ITS Wlien newly hatched the larva is pale yellow, with the head and thoracic plates dark brown or nearly black. The full-grown larva (fig. 10, c) averages 5 mm. to mm. in length and nun. in i>reatest width. I
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. THE CIGAR CASE-BEARER, 37 DESCRIPTION. THE EGG. The minute egg (fig. 10, d), which is hardly visible to the naked eye, is pale yellow, and over the surface is closely marked with ele- vated ridges. On the average, it measures by mm. and is almost round in outline. THE LARN'A AND ITS Wlien newly hatched the larva is pale yellow, with the head and thoracic plates dark brown or nearly black. The full-grown larva (fig. 10, c) averages 5 mm. to mm. in length and nun. in i>reatest width. Its head is mm. wide and is dark and strongly chitinized, with the ventral surface lighter than the rest. The body is reddish orange, with dark plates as follows: The cervical plate on the l)rothorax, subdivided by a white interspace; two smaller plates on the dorsum of the mesothorax; a pair of lateral plates on each thoracic seg- ment ; a large anal plate on the termi- nal segment; a small plate on the side of each anal leg. The crochets on the' fourth pair of abdominal legs are absent, and on the first three pairs are rudimentary or wanting, varj'ing from none to 4, in one or two rows. The anal legs have from 10 to 13 well-developed crochets placed in a single row. The spiracles are round and feel)ly indicated. The thoracic legs are large, dark broAvn, strongly chitinized, and with a chitinous plate behind the l)asal portion of each leg. The seta^ on the head, thoracic legs, and termiilal portion of the body are distinct; on the abdominal segments they are rather indistinct. The abdominal segments are distinctly divided into two annulets, and the dorsal surface of each annulet is minutely granular. The case, as it is made in the fall, is a minute, flattened structure (fig. 9, ciy composed of portions of the upper and lower skins of the leaf. In (he spring, with the growth of the larva\ the anterior open- ing is prolonged into a tube made from fragments of leaves fastened
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology
