Which of the following is NOT a characteristic of horse or deer flies?

Horse and deer flies exhibit various characteristics that are well-established in pest management. One key point is that most species of horse and deer flies do in fact have overwintering strategies; these strategies often involve entering a dormant state or finding sheltered areas to survive through colder months. Understanding this is crucial for pest control operators as it informs them of potential breeding and activity periods.

The other three characteristics are true and significant to pest control. For instance, these flies are indeed attracted to water sources, which can play a major role in their breeding habits. They also tend to be larger than common house flies, which can affect the approach one might take in managing their presence. Additionally, horse and deer flies are known for their painful bites, which can have severe effects on livestock and can be a critical concern for farmers and ranchers. Recognizing that these flies are problematic and often persistent due to their overwintering capabilities is essential for effective pest management.