According to a press release on FDA.gov:
Abbott is recalling these products following an internal quality review, which detected the remote possibility of the presence of a small common beetle in the product produced in one production area in a single manufacturing facility. The United States Food and Drug Administration (FDA) has determined that while the formula containing these beetles poses no immediate health risk, there is a possibility that infants who consume formula containing the beetles or their larvae, could experience symptoms of gastrointestinal discomfort and refusal to eat as a result of small insect parts irritating the GI tract. If these symptoms persist for more than a few days, a physician should be consulted.
The recall of these powder infant formulas includes:
Certain Similac powder product lines offered in plastic containers.
Certain Similac powder product lines offered in sizes such as 8-ounce, 12.4-ounce and 12.9-ounce cans.
To immediately find out if the product in your possession is included in this recall, parents and caregivers should visit www.similac.com/recall, and type in their lot number to determine if their product is affected, or call (800) 986-8850.

AnnArbor.com