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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Cylas formicarius – Wikipedia

Conversely, a large number of volunteer plants grew in the non-flooded control plots, all of which were infested with weevils. Distribution Top of page A record of C. Unpublished discussion paper Journal of Chemical Ecology, 12 6: Among the three predators, only Pheidole megacephala is reported to be an effective biological control agent of C.

In one experiment in Taiwan, sweet potato was planted between two rows of each of 68 crop species and weevil infestations of the roots were monitored. Coleoptera Excepting Scotylidae and Platypodidae. This weevil -related article is a stub. Attraction of adult sweet potato weevils, Cylas formicarius elegantulus SummersColeoptera: This is to ensure that we give you the best experience possible.

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Introduction Because of its concealed feeding habits, C.

Resistance in sweetpotato to sweetpotato weevil. Florida Insect Management Guide for sweetpotatoes Cultural practices.

Z dodecenol E butenoate Food: The pupa measures about 6. Females apparently produce two to four eggs per day, or 75 to 90 eggs during their life span of about 30 days.


Sweetpotato weevil was first noted in the United States in Louisiana inand then in Florida in and Texas inprobably entering by way of Cuba. International Journal of Pest Management, 41 1: Few areas in the above regions where sweet potato is grown are free from its destruction. The long snout is bent towards the ventral side. Brentidae Beetles described in Weevil stubs.

Mulching Soil cracks are the major route of weevil access to roots. The enlargement of roots, especially in cultivars which set roots near the soil surface, and soil moisture stress can produce cracks and increase exposure of roots to the weevil.

Sweet potato research and development for small farmers. Efectividad tecnico – economico del empleode la hormiga leona Pheidole megacephala en el control del tetuan de boniato Cylas formicarius elegantulus. Bionomics of sweet potato weevil Cylas formicarius Fabricius Coleoptera: Under laboratory conditions at 15 C, adults can live over days if provided with food and about 30 days if starved.

sweet potato weevil (Cylas formicarius)

Duration of the egg stage varies from about five to six days during the summer to about 11 to 12 days during colder formicarihs. Following egg deposition the egg hole is covered with a greyish mass which hardens to form a protective cap over the developing egg Reinhard, ; Gonzales, A record of C. Gonzales in the Philippines reported that males survived days and females days. Studies directed toward the determination of sex and food attractant of Cylas cy,as elegantulus.


Cylas formicarius

Few areas in the above regions where sweet potato is grown are free from its destruction. Journal of Root Crops Calystegia soldanella, Dichondra carolinensis, I.

When several references are cited, they may give conflicting information on the status.

Taxonomic Tree Top of page Domain: Report of the workshop on sweet potato improvement in Asia, Lima, Peru: Cultural Control Cultural pest control involves changing or modifying cultivation practices which directly or indirectly reduce the pest population.

Natural Enemies Back to Top Several natural enemies are known. Normally the adult emerges from the pupation site by chewing a hole through the exterior of the plant tissue, but sometimes it remains for a considerable period and feeds within the tuber.