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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Intercropping with chickpea Cicer arietinumcoriander Coriandrum sativumpumpkin Cucurbita moschataradish Raphanus sativusfennel Foeniculum vulgareblackgram Vigna mungo formicariux yardlong bean Vigna unguiculata ssp.

Cylas formicarius

Most eggs tend to be deposited near the juncture of the stem and root tuber. In Hawaii, Sherman and Tamashiro showed that damage increased sharply between 24 and 30 weeks after planting.

Guam Agricultural Experiment Station. Asian Vegetable Research and Development Center. Weevil-free cuttings can be produced by dipping them in a suitable insecticide solution before planting. Among the three predators only Pheidole megacephala is reported to be an effective natural control agent of C. Breeding is continuous throughout the winter, especially in potatoes formiczrius storage. Field-plot tests in Tamil Nadu, India, showed that formlcarius application of insecticides lead to increased yields.


Integration of several cypas components has potential in reducing and possibly preventing the crop being infested by the weevil from these two sources.

Madras Agricultural Journal, Therefore, the use of weevil-free sweet potato cuttings is often advised Ballou, ; Franssen, ; Tucker, ; Holdaway, In Penghu Island, Taiwan, Talekar et al.

Ciencia y Tecnica en la Agricultura, Viandas Tropicales, 10 1: Sutherland b listed 30 such species and four additional ones were recently found to harbour the weevil in Taiwan AVRDC, The head is black, the antennae, thorax and legs orange to reddish brown, and the abdomen and elytra are metallic blue.

Steinernematidae, Heterorhabditidae for control of sweetpotato weevil Coleoptera: This was further confirmed in a related study where 1 to 8 week-old weevil-free plants were exposed to the weevil in the field. Sweetpotato Weevil, Cylas formicarius Cykas Coleoptera: Bulletin of the Institute of Zoology, Academia Sinica, 28 4: International Potato Center, Estimating the cylad properties of the sweet potato weevil, Cylas formicarius Fabricius Coleoptera, Brentidae.

Other cultural practices which may help reduce weevil damage and which are often advocated are: Influence of sweetpotato weevil infestation on the yields of twelve sweet potato lines. In Penghu Island, Taiwan, Talekar et al.


sweetpotato weevil – Cylas formicarius (Fabricius)

Use of sex pheromone trap for monitoring and management of sweet potato weevil Cylas formicarius, Fabricius. If you would like to, you can learn more about the cookies we use. The absence of cracks denies the weevil access to the roots. Shanghai Science Press, Click the contributor’s name fformicarius licensing and usage information. The two predatory ants, P. Breeding is formixarius throughout the winter, especially in potatoes in storage.

The egg is oval in shape and creamy white in color.

The distal antennal segment in the female is egg-shaped, only two-thirds the length of the flagellum. In Cuba, Perez et al.

Species Cylas formicarius – Sweet Potato Weevil –

An IPM approach for sweet potato weevil. Integrated control of sweet potato weevil Cylas formicarius Fabricius. Integrated Taxonomic Information System. Alternatively all Ipomoea can be eliminated foemicarius one cropping season and allowed to grow in the subsequent seasons, once the area is free of the weevil. A,V, p.

Subramanian found males and females surviving for 94 and days, respectively, in India.