. Cooperative economic insect report. Insect pests Control United States Periodicals. - 726 - brownish, spots on the upper surface of the leaves. When disturbed, the larva wriggles vigorously and drops on a fine silken thread. Larval feeding lasts 3 or 4 weeks, after which a cocoon is formed in 48 hours and pupation takes place. After 12 days, the pupa wriggles out one end of the cocoon and the adult emerges. Adults are active in daytime, especially on warm days. They have an erratic manner of flight, not long sustained, and a characteristic posture when at rest, wings held partly upraised. De
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 726 - brownish, spots on the upper surface of the leaves. When disturbed, the larva wriggles vigorously and drops on a fine silken thread. Larval feeding lasts 3 or 4 weeks, after which a cocoon is formed in 48 hours and pupation takes place. After 12 days, the pupa wriggles out one end of the cocoon and the adult emerges. Adults are active in daytime, especially on warm days. They have an erratic manner of flight, not long sustained, and a characteristic posture when at rest, wings held partly upraised. Description: ADULTS - Color variable, predominantly dark reddish-brown, often with purplish tinge. Marginal scales of wings nearly always dark brown. Forewing often with an indefinite pale band and wavy black lines; and frequently with 3-4 white spots along costal margin. Hind wing with pale stripe on costal margin extending from base of wing slightly beyond middle. Labial palpi with 3 segments; third or terminal segment three-fourths length of middle one. Wing below mostly grayish. Body clothed with brown scales except on sides of abdomen which are gray-tipped. Body mm. long; wing expanse 11-13 mm. EGG - Subhemispherical; mm. long, mm. wide and mm. high; soft; thin shelled; finely sculptured, with fine lines radiating from center point on rounded surface. Pale green when first laid; turning yellowish. LARVA - First Instar: About mm. long, body distinctly annular; head, pale yellowish-brown, posterior margin with dark line; thoracic legs and prolegs a translucent, pale, watery green. Second Instar: Pale yellowish-green with dark tubercles; about mm. long; head light yellowish-brown. Third Instar: Similar to second instar with dark tubercles becoming larger; 6-7 mm. long. Fourth Instar: 10-12 mm. long; yellowish-green with prominent black tubercles; head pale brown; posterior lateral edge, ocelli and a narrow line at edge of mouth parts, black. PUPA -
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Photo credit: © The Book Worm / Alamy / Afripics
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
