• Biting sandfly (black fly)

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Sand Flies

Sandflies (black flies) bite us and suck our blood giving rise to itchy swollen lumps on our skin.

Identifying

Sandflies can ruin a good holiday in many parts of New Zealand. After mating, the female needs a meal of blood to produce eggs. Males do not bite and are vegetarian. The females attack vertebrates such as humans, birds, bats, seals, and domestic animals. They pierce the skin, creating a drop of blood that they suck up. This photograph shows the sandflies on a tent after a night on the west coast.

Solving

The numbers of sandflies around your home can be controlled.

> Use NO Bugs Super or NO Bugs Indoor on surfaces around the areas where sandflies are causing problems, i.e. decks, walls, indoors and outdoors.
> Repellents can be effective in keeping biting insects away from your person and outdoor living areas.

Did you know

Sandflies cannot see at night, so they rarely bite in the dark. They do not often move indoors. Biting most often occurs when light intensity increases in the morning caused by young sandflies that have recently emerged from pupae. A second risky period is at dusk, often the result of sandflies taking blood after laying eggs earlier in the day. Sandflies are most active in dull, overcast and humid conditions, when they may bite at a similar rate.

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