A sandfly is a small, flying insect belonging to the family Psychodidae. These tiny creatures are often found in warm, humid environments, particularly near beaches and marshes. Sandflies are known for their painful bites, which can cause irritation and allergic reactions in some people. They are most active during dusk and dawn. Sandflies are also vectors for various diseases, including leishmaniasis, a parasitic infection that can affect the skin and internal organs. Their bites can transmit the parasites to humans and animals, making them a concern in certain regions. Proper precautions, such as using insect repellent, can help reduce the risk of bites.