The European crane fly is an insect often mistaken for a large mosquito. Adult crane flies resemble oversized mosquitoes and typically measure between 1.5 and 2.5 cm in length.

Unlike mosquitoes, crane flies do not bite and are relatively poor fliers. Adults are commonly seen in late summer and early fall, especially around lawns and grassy areas.

Females lay their eggs near the soil surface, usually at a depth of about 1 cm. The eggs are black, shiny, oval-shaped, and approximately 1 mm long.

It is mainly the larvae that cause damage to lawns. They feed on grass shoots at night and grass roots during the day, which can weaken the turf and cause yellow patches or areas where the grass can be easily pulled up.

The crane fly typically completes its life cycle in one year. Adults emerge between mid-July and early October and quickly mate after emerging.

 

Signs of a Crane Fly Infestation

• Yellowing or thinning patches in the lawn
• Areas of turf that lift easily from the soil
• Increased bird activity pecking at the lawn
• Presence of gray or brown larvae in the soil

Regular lawn inspection helps detect these insects early and allows for timely intervention.