. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 82 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. tubercles, with bristles similar to those in the preceding instar, mm. in length, with the black on the apices, joints, and bulbs at the base more pronounced, causing the tubercles to appear black to the naked eye. All the segments laterally, and dorsum of the an- terior and posterior segments with long, segmented, whitish hairs variable in length. Thoracic feet small, pointed, dilute-brown, darker at the tip; abdominal feet larger, apex with a circlet of blac
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 82 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. tubercles, with bristles similar to those in the preceding instar, mm. in length, with the black on the apices, joints, and bulbs at the base more pronounced, causing the tubercles to appear black to the naked eye. All the segments laterally, and dorsum of the an- terior and posterior segments with long, segmented, whitish hairs variable in length. Thoracic feet small, pointed, dilute-brown, darker at the tip; abdominal feet larger, apex with a circlet of black bristles, all the feet similar in color to the rest of the body. Length, mm.; width of head, 0.(300 mm. (nearly constant). Fourth instar.—Body sulphur-yellow, head retractile, dilute-brown, darker on exposed portion, mandibles and eyes brownish-black. Head when viewed from above oval- pyramidal in form. Tubercular areas very prominent now to naked eye, appearing as black, bristly, wartlike patches, this appearance due to the black tips of the whitish, jointed bris- tles; joints and bulbs at base of bristles blackish. Tubercular areas on dorsum of segments 7, 8, 9, and more especially 7 and 9, fainter to naked eye than on other segments, as the bristles are not so heavily tipped with black nor are the joints black. Dorsum of anterior and posterior segments and all segments laterally with long, whitish, segmented hairs of variable length. Thoracic and abdominal feet yellowish, longer, but marked the same as in the third instar. Length, 7-8 mm.; width of head, mm. (nearly constant). Fifth instar.—Bod}^ deep suli)hur- yellow, head retractile, dilute-brown, darker on exposed portion, mandibles and eyes brownish-black. Shape of head similar to that in the fourth instar. Tubercular areas now very prominent to naked eye and appearing as black, bristly, wartlike patches. Bristles under §-inch objective same as in the fourth instar, but more distinct and longer
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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology
