Larvae of sweetpotato weevil, Cylas formicarius (Fabricius). Figure 1. Larvae of sweetpotato weevil, Cylas formicarius (Fabricius). Photograph by James Castner . Brief summary. No one has contributed a brief summary to this page yet. Explore what EOL knows about Cylas formicarius. Add a brief summary to this page. C. formicarius adults feed on the epidermis of vines, scraping oval patches off young vines and petioles. Adults also feed on external surfaces of storage roots.
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Life-history, bionomics, and control of sweet potato weevil Cylas formicarius with short notes on some other pests of sweet potato in Bombay State. Subramanian recorded life cycle duration of days under undefined conditions. This approach is considered in areas cylae rotation is not possible. In Florida, where P. Queensland Agricultural Journal, 7: Cultural practices are sometimes recommended to alleviate weevil problem.
Adults can fly, but seem to do so rarely and in short, low flights. It has recently been inadvertently introduced in two South American countries, Venezuela and Guyana. A review of the biology and control of the sweet potato weevil, Cylas formicarius Fab.
Field efficacy and foormicarius of entomopathogenic nematodes Rhabditida: The fungus Beauveria bassiana is produced in large quantities and used intensively frmicarius the control of the sweet potato weevil in Cuba. Wolfe confirmed this with taxonomic studies Wolfe, Curculionidae using pheromone or live females as bait.
Insect Science and its Application 8: Indian Journal of Entomology, This type of treatment is usually more economical than post-plant insecticide applications, and if combined with proper sanitation and other measures to prevent immigration of weevils from infested plants, may result in satisfactory control of the weevil Sherman, ; Sherman and Mitchell, ; Sherman and Tamashiro, ; Wolcott and Perez, ; Talekar, Similar losses are found in other Asian and Pacific countries.
Datasheet Cylas formicsrius sweet potato weevil.
Distribution of sweetpotato weevil in fields is aggregated. Contributo alla conoscenza dell’entomofauna nociva del Venezuela.
sweetpotato weevil – Cylas formicarius (Fabricius)
fromicarius Breeding is continuous throughout the winter, especially in potatoes in storage. In Hawaii, Sherman and Formicariud showed that damage increased sharply between 24 and 30 weeks after planting. Title Adult Caption Cylas formicarius sweet potato weevil ; adult, dorsal view. Daily locomotor activity in the Indian sweet potato weevil, Euscepes postfasciatus Fairmaire Coleoptera: Damage by Cylas formicarius Fab. Adults also feed on external surfaces of storage roots resulting in round feeding punctures.
HortScience, 15 6, I: Irradiation is potentially effective, although older stages of insects are less susceptible to destruction. This view concurs with that of Sakae in Japan. Guam Agricultural Experiment Station.
Please consider a year-end gift to BugGuide! Integrated Taxonomic Information System. Plastic film and rice straw mulch reduced weevil infestations as compared with non-mulched plots AVRDC, The egg is oval in shape and creamy white in color.
Generate a print friendly version containing only the sections you need. Calystegia soldanella, Dichondra carolinensis, I.
From Wikipedia, the free encyclopedia. Damage by Cylas formicarius Fab. The major insect pests of sweet potato Ipomoea batatas L.
Adults do not undergo a period fformicarius diapause in the winter, but seek shelter and remain inactive until the weather is favorable. Destruction of crop residues Destroying any crop residues left in the field after harvest is important because weevils survive in roots and stems and infest succeeding or neighbouring sweet potato plantings Chittenden, ; Franssen, ; Eddy et al. For example, in Taiwan, less damage by C. InPalaniswamy et al. Formicariua distribution and damage of sweetpotato weevil, Cylas formicarius elegantulus Coleoptera: Removal of these hosts growing in the vicinity of sweet potato plantings is recommended as a control measure Gonzales, ; Franssen, ; Cockerham, ; Subramanian, ; Ho, ; Jayaramaiah, ; Wood, Brentus formicarius Fabricius Syn: Postharvest treatment not only prevents damage in storage, but allows shipment of tubers to areas where sweetpotato weevil is not found but cyylas survive.
The adult measures 5.
Cylas formicarius (sweet potato weevil)
It also favors development of fungal diseases of weevils. Plant Protection, 24 5: Brentidae Beetles described in Weevil stubs.
Journal of Economic Entomology,