Inland Floodwater Mosquito vs Mexican Cactus Fly

Side-by-side species comparison

Attribute Inland Floodwater Mosquito Mexican Cactus Fly
Scientific Name Aedes vexans Copestylum mexicanum
Order Diptera Diptera
Family Culicidae Syrphidae
Size 4-7 mm 12-18 mm
Habitat Rivers & Streams Deserts & Drylands
Diet Blood Feeders Nectar Feeders
Regions Worldwide except Antarctica North America, Central America
Conservation Least Concern Least Concern

Inland Floodwater Mosquito

One of the most widespread and abundant mosquitoes globally, with a brownish body and narrow white bands on the hind tarsi. It is a major nuisance pest that emerges in massive numbers after flooding or heavy rains. It is a competent vector of Rift Valley fever virus and various encephalitis viruses.

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Did You Know?

Its eggs can remain dormant in dry soil for years, hatching simultaneously after flooding to produce enormous swarms.

Mexican Cactus Fly

A large, dark hoverfly whose larvae develop in decaying cactus tissue. Adults are strong fliers visiting flowers in arid landscapes.

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Did You Know?

Larvae play an important ecological role in recycling decaying cactus material.