yellow flying insect

The yellow flying insect refers to various types of flies within the family Tabanidae, specifically the genus Diachlorus. These insects are commonly known as yellow flies in the United States and Tabanid flies elsewhere. The most common species is Diachlorus ferrugatus, commonly referred to as the yellow fly.

Appearance and Identification

Yellow flies are small flying insects that range in length from 1 to 2 centimeters. They are mainly yellow with black markings on their bodies, eyes, and legs. The most distinctive feature of the yellow fly is its clear wings with black stigma and a prominent brown patch on the apex of the翅. The wingspan can vary depending on the species, but the majority are less than 2 centimeters.

Yellow flies are most active during the night and during sunny days, with males often engaging in flight displays to attract mates. Female flies are primarily bloodfeeders, attacking human beings and other mammals for the protein needed to produce eggs. Some species of yellow flies can also feed on nectar and pollen.

Life Cycle and Management

Yellow flies have a life cycle that typically takes about one year from egg to adult. Adults typically mate soon after emerging and deposit their eggmass on plants or other surfaces. The larvae feed on decaying organic matter and can molt multiple times before pupating. Management of yellow flies involves several strategies, including the use of insecticides, traps, and management practices to reduce their populations.

Biting Habits and Management

Yellow flies are known for their aggressive biting behavior, especially the female flies. They are most active during hot summer and early fall when humans are present in their larval habitats. Management includes preventing access to harborage areas and using repellents to protect oneself. In areas where yellow flies are abundant, traps can be effective in reducing their numbers.

Habitat and Distribution

Yellow flies are most prevalent in warm, humid regions of the United States, with certain species having a wider geographic distribution. They are native to temperate and tropical regions worldwide, with the greatest diversity in the tropics.

Health Risks and Prevention

Yellow flies can be a significant health risk to humans as they are bloodfeeders, potentially spreading diseases like typhoid, scrub typhus, and Rift Valley fever. People with known allergies to yellow flies may experience severe allergic reactions following a bite. Prevention measures include avoiding contact with yellow flies and using insect repellents when outdoors in areas where the insects are prevalent.

Economic Impact

Yellow fly populations can be economically impactful, particularly in agriculture where they can cause damage to crops and decrease crop yields. The cost of yellow fly control can be high, representing a significant economic loss for farmers.


The yellow flying insect, often referred to as yellow flies, is a diverse group of insects belonging to the family Tabanidae, specifically the genus Diachlorus. These insects are abundant in warm, humid regions and are known for their aggressive biting behavior, attracted to human and animal blood.黄色的 flies typically have a wingspan of less than 2 centimeters and are identified by their yellow coloration and black markings.

The yellow fly life cycle typically spans about one year, from egg to adult, with adults engaging in flight displays, predominantly bloodfed, to attract mates. Management strategies include the use of insecticides, traps, and management practices to reduce populations. Prevention of yellow fly bites is crucial in areas where the insects are prevalent and for individuals with known allergies to these insects.

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