There are several synonyms for the term "sheep gadfly," which refers to a type of fly that feeds on and annoys sheep. One common synonym is the "sheep botfly," which is another type of insect that can cause harm to sheep. Other possible synonyms include the "sheep tick," "sheep louse," and "sheep flea," all of which are insects that can infest and harm sheep. While these pests may seem minor, they can cause significant harm to sheep, resulting in loss of wool and reduced productivity. Farmers must be vigilant in protecting their flocks from these insects by practicing proper animal care and taking preventative measures.