Thickheaded flies

These flics have broad heads and an abdomen that narrows where it joins the thorax. Many resemble bees or wasps in shape and coloration.

• LIFE CYCLE Eggs arc laid on the bodies of hosts such as other flics, crickets, cockroaches, wasps, or bees. Larvae burrow inside and feed on body fluids.

• OG( :i RRENC T. Worldwide. In varied habitats, usually feeding at flowers.

• REMARK Some larvae may cause bee hosts to burrow into the soil before they die, giving the flies a safe place to pupate.

broad ends of long antennae taper to > a point proboscis longer than head •-

broad ends of long antennae taper to > a point proboscis longer than head •-

• wasplike "waist"

abdomen curves down at end

Larvae are very narrow at the front and broad or plump at the rear. The hairless body has fine wrinkles.

• wasplike "waist"

abdomen curves down at end

Conors species are very wasplike. 'They are often seen feeding at flat-topped flowers such as hogweed.

Family DI0PSII)AE

No. of species j on eye at end of long stalk

short spines project front rear of thorax

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