The Crane Fly (Tipula spp.) is tan to gray-brown; extremely long, fragile legs and typically measures ¾–1½ inches (legs add considerable apparent size). Crane flies (Tipula spp.) are large, long-legged flies that are frequently mistaken for giant mosquitoes and cause considerable alarm when they enter homes. Despite their intimidating size, adult cran.

The Crane Fly is generally low-risk, but caution is still advised. No medical risk to humans. Adults are completely harmless. Larvae can cause lawn damage in irrigated turf areas.

In Arizona, crane flys are most often encountered in the following situations: Large, long-legged flies near lights or inside the home. Adults resting on walls and ceilings. Brown patches in irrigated lawns in spring. Leatherjacket larvae visible in soil when turf is pulled back.

The Crane Fly is most active during: Adults most common spring and fall; larvae active in soil year-round. Arizona's warm desert climate can extend activity periods compared to other states, so year-round vigilance is recommended in the Phoenix metro and surrounding areas.

Seal gaps around doors and windows to prevent adult entry. Reduce exterior lighting or use yellow bulbs. Maintain healthy, well-drained turf to reduce larval survival.

Adults require no treatment — they are harmless and short-lived. Lawn treatments with insecticides or beneficial nematodes (Steinernema carpocapsae) for leatherjacket control in damaged turf.

Most fly species are drawn to food sources, moisture, organic waste, and breeding sites. For Crane Flys specifically: Large, long-legged flies near lights or inside the home. Adults resting on walls and ceilings. Brown patches in irrigated lawns in spring. Leatherjacket larvae visible in soil when turf is pulled back. Eliminating attractants is the first step — Pest Control Bros can identify the source and recommend targeted control.