Economic importance Earias insulana is a major pest of cotton in the Eastern Mediterranean. Damage is caused by the larvae, which cause. Acontia xanthophila Walker, ; Earias chlorion Rambur; Earias frondosana Walker; Earias gossypii Frauenfeld; Earias insulana syn. The symptoms of attack are similar for all Earias spp. Cotton infestation generally starts with shoot boring in the young crop. Earias insulana enters the terminal.
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Prospects of using sex pheromone for the control of cotton bollworms, Earias insulana Boisd. Indian Journal of Entomology, 53 2: Pheromone trap to monitor adult spotted bollworm, Earias vittella F.
The larvae usually bore deeply, filling the tunnel opening with excrement. Memorandum on the parasites and possibilities of biological control of East Africa cotton boll worms. Atger also mentions undefined viruses attacking E.
Indian Journal of Agricultural Sciences, 58 4: Stam and Elmosa found that parasitoids were relatively unimportant in controlling lepidopterous pests in cotton in Syria, insulan that the use of pesticides reduced the numbers of predators, resulting in a reduction in seed cotton yields.
Variation in the relative importance of each species and intraspecific morphological variations. Pe ; de Insect pests of cotton.
Coton et Fibres Tropicales, 29 2: Earias vitellaE. Datasheet Earias insulana Egyptian stem borer. Earias insulana Scientific classification Kingdom: Earias insulana enters the terminal bud of the vegetative shoot and channels downwards from the growing point, or directly penetrates the internode.
Influence of sowing time on the incidence of bollworms and its influence on bollrot complex of insullana.
Ecological studies on the spotted bollworms of cotton and their parasites II. Effect of low temperatures on hibernating larvae and pupae of Earias insulana. Effect of weather on the light-trap captures of some insect pests of cotton.
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Proceedings of Pakistan Congress of Zoology, The bolls are also attacked, but only when they are unripe. Relative abundance of noctuids Lepidoptera associated with cotton and other crops in Haryana. The symptoms of attack insulaan similar for all Earias spp.
Effect of agricultural factors on cotton yield and bollworm attack.
Please consider upgrading your browser to the latest version or installing a new browser. Coccinellidae are the more important predators in Syria early in the cotton season June-Julywhereas Hemipteran predators occur in large numbers during Insjlana and September. Noctuidae and its parasites on Abutilon asiaticum L. The whole apex turns blackish-brown and dies.
The pest occurs around the Mediterranean and in Africa.
Bestimmungshilfe des Lepiforums: Earias Insulana
Effect of row skipping in tree cotton Gossypium arboreum on efficacy of chemical control of spotted bollworms Earias earixs and E. Trinidad, Commonwealth Institute of Biological Control: Nature and Science Infestations of maturing bolls injures the developing filaments, concurrently introducing bacterial and fungal agents. During winter it lives on cultivated shrubs like Hibiscus spp.
It may raise up to six annual generations in the Middle East, one per month in summer. The larvae tend to move from boll to boll and the damage they cause may be disproportionate to their numbers.
Variation of the relative importance of each species and intraspecific morphological variations continued. Biological, cultural and selective methods for control of cotton pests in Egypt. Noctuidae in some cotton phenotypes. Host-Plant Resistance Considerable resistance to Earias has been recorded in several wild species of Gossypium Anson et al.
Ovipositional preference and damage by spotted bollworm Earias fabia Stoll in cotton. Trichogramma australicum and B.
Egyptian stem borer Earias insulana. European and Mediterranean Plant Protection Organization. Secondary invasion by fungi and bacteria sometimes occurs. Legislation in some countries requires farmers to uproot and destroy harvested plants to ensure an adequate close season, but this is seldom enforced. Zeitschrift fur Angewandte Entomologie, 79 4: Report of work carried out during However, field tests carried out in the Indian Punjab in to investigate the damage to different cotton varieties caused by several bollworms, including E.
Cultural Control Much of the literature investigating cultural control of bollworms looks at mixed populations such as Pectinophora gossypiella. Pawar AD; Prasad J, La faune des cottoniers sans glandes dans la partie meridionale du Tchad.
Cotton-pest management in Egypt.