Screwworm parasites are getting closer and closer to the U.S. border. The parasites primarily infect cows. Officials in nine countries are trying to get a handle on the New World screwworm, a fly ...

When one species is genetically similar to another species, their populations can often be mistaken for one and the same. This is exactly what has happened with Papilio solstitius, a tiger swallowtail ...

UCCE experts urge producers to monitor their animals for signs of the parasite, which has been moving north from Central and South America.

A person in Maryland is confirmed to have a screwworm living in them. It is the first case in the U.S. in several years. The person, who was not identified, had traveled to the U.S. from El Salvador, ...

Few insects strike greater fear into the hearts of orchard-owners than rosy apple aphids. These tiny bugs feed on the leaves of apple trees, draining them of nutrients. Their saliva, meanwhile, ...

Mouth larvae are parasites that hatch and live inside the oral cavities of human and animal hosts. These pests can cause a dangerous infection called oral myiasis. This disorder rarely occurs in ...