GIANT CRANE FLY
Tipula abdominalis
CRANE FLY FAMILY (Tipulidae)
Description
A very large crane fly with spotted wings and very long legs. Females can be up to 1.75 inches long (45 mm) with legs extending to 4.5 inches (115 mm). This crane fly can be identified by its very large size and the black velvety spots on the abdomen. Males and females are similar in appearance but the female has a somewhat pointed abdomen and the male is as shown in the photos. Both sexes have a yellow abdomen with a dark line along each side. The posterior end of the abdomen is all dark.
Occurrence
The Giant Crane Fly ranges from eastern U.S. and Canada west to Nebraska and Manitoba. These flies are common in our area and are attracted to lights at night. There are normally two flight periods for the adults, May/June and September/October.
Comments
The larvae of this species are aquatic and among the largest and most common aquatic invertebrates in streams of wooded areas, and are sought out as bait for fish. Larvae feed on decomposing leaves, thus playing an important role of breaking down organic matter in the water. Two generations occur, more numerous in late summer than in spring.
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is: Loren Padelford.
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