- The origin of Cylas formicarius is not definitely known, but it is thought it may have originated in Africa or India.
- Life Cycle
- Adults are ant-like, shiny, blue-black, snout beetles whose "waist" and legs are bright orange-red. They are about 0.24 in. (6 mm) long. Larvae are legless, white to cream colored with a pale brown head. Larvae are about 0.35 in. (9 mm) long. Breeding is continuous throughout the winter, especially in potatoes in storage. Eggs are laid singly in small cavities eaten out in the stem or tuber. Eggs hatch in less than a week and larvae feed inside for two to three weeks. Pupation occurs in the potatoes. The pupal stage lasts about a week to 10 days. There can be as many as eight generations per year.
- Cylas formicarius is found throughout the coastal plain of the Southeast from North Carolina to Texas. It also is found in Hawaii and Puerto Rico, and widely around the world in tropical regions.
- Control Efforts
- Insecticides, cutural practices and biological controls are being used or researched for control of this pest.
- Sweetpotato Weevil - Cylas formicarius elegantulus (Summers) - University of Georgia
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Invasive Listing Sources
Other System LinksITIS: 187849
NPDN Pest: INASBGA