. Cooperative economic insect report. Beneficial insects; Insect pests. - 886 - Life History and Habits: The overwintering adults emerge and mate in the spring. The eggs are laid on the underside of tender leaves of host plants in groups of 4 to 10. They hatch in about 10 days and the young larvae begin feeding voraciously. In heavy infestations, only the skeleton of the leaf is left. Larvae mature in 15 to 20 days after passing through several molts. Pupation lasts for 10 to 15 days, after which the adults emerge and begin to feed on the leaves of host plants. Adult feeding is characterized b
. Cooperative economic insect report. Beneficial insects; Insect pests. - 886 - Life History and Habits: The overwintering adults emerge and mate in the spring. The eggs are laid on the underside of tender leaves of host plants in groups of 4 to 10. They hatch in about 10 days and the young larvae begin feeding voraciously. In heavy infestations, only the skeleton of the leaf is left. Larvae mature in 15 to 20 days after passing through several molts. Pupation lasts for 10 to 15 days, after which the adults emerge and begin to feed on the leaves of host plants. Adult feeding is characterized by damage to under surface of leaf, leaving the leaf margin intact. Several generations occur annually in Uruguay, but in Argentina only 2 are reported to develop. In Argentina the adults overwinter under bark of trees or any place where they can find shelter. Description: Adults are brownish-yellow, many black spots on the elytra in a characteristic mosaic design. (See illustration). Length of adult 9-10 mm., width 6-8 mm. Eggs cylindrical in shape, one mm. in diameter, orange-yellow in color. Larva yellowish with black head, body covered with branched, dark spines. Length about 10 mm. (Prepared in Plant Pest Survey Section in cooperation with other ARS agencies.) CEIR 8(42) 10-17-58. Stages of Epilachna paenulata A-Adult, B-Larva, C-Egg Figures (except map) from Lopez, C. 0., Gieschen, R. E. and Quintanilla, R. H. 1946. Zoologia Agricola (2nd Edition) 774 pp. Buenos 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 United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs; United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Division. Hyattsville, MD. [etc. ] Plant Protection and Quarantine Programs Animal and Plant Health Service
Size: 2311px × 1081px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
