Crane Fly

Pest: Crane fly (Tipula paludosa, Tipula oleracea)

Pest Type: Insect Pest

Major Identifying Features: Adult flies have very long legs and resemble large mosquitoes, larvae are brown with tough skin and are 1-1.5 inches long

Life Cycle: Adults emerge in late summer and fall from the soil beneath turf grass, pastures, and other grassy areas, females lay eggs within 24 hours of emerging, larvae are small and brown and worm-like, have very though skin, they feed on the roots and crowns of clover and grass plants during the fall, overwinter in soil as larvae and start feeding again the following spring, there is one generation per year

Pest Rating: Minor

Management Rating: Easy to moderate

Host/Season/Outbreak Information: Main season is late summer and fall, larvae stay underground during the day and feed on plants aboveground at night, crane flies have primarily been found to cause most damage in Humboldt and Del Norte counties and do not appear to be a problem on turf grass in warmer areas, cool season turf grass species are most susceptible

Damage Information: Larvae cause most of the damage on roots, crowns, and grass blades of grass plants, damage can be noticed in March and April

Management Options: A healthy and well-maintained turf grass can easily recover, prevention with nitrogen fertilizer is important, biological control with Steinernema feltiae, cultural control by proper irrigation and fertilization, removing thatch, and by aerifying turf

Sources:

http://www.ipm.ucanr.edu

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