White-footed Woods Mosquito

Psorophora ferox · Order: Diptera · Family: Culicidae

Can spread germs or disease. This mosquito can bite painfully and is known to carry viruses that affect humans and animals.

Source: Wikipedia

White-footed Woods Mosquito
Photo: Katja Schulz, CC BY

The white-footed woods mosquito is a small, aggressive biter that lives in wet woodlands and breeds in temporary rain pools. It can transmit Venezuelan equine encephalitis virus and has been found as a minor vector of West Nile virus.

Source: Wikipedia

How to recognize it

Its back is dark with a purple sheen, while the belly is yellowish with triangular patches of yellow scales. The legs are mostly dark but the last two segments of each foot have white scales.

Source: Wikipedia

Size

Female wings measure about 3.7 to 4.0 mm long.

Source: Wikipedia

Does it bite or sting?

Bites are painful and the species can transmit Venezuelan equine encephalitis virus. It has also been identified as a minor vector of West Nile virus in New York.

Source: Wikipedia

Where it lives

It lives in wet woodland areas and lays eggs in short-lived rain-filled pools.

Source: Wikipedia

What it eats

Adults are aggressive feeders that give painful bites.

Source: Wikipedia

Life cycle

Larvae develop during the summer months in North America.

Source: Wikipedia

When you see it

Adults are active both day and night.

Source: Wikipedia

Where it is found in the US

Recorded in 35 of 51 states and DC. Most records: Florida, Virginia, Maryland, Alabama, Massachusetts, Illinois, Indiana, Texas.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Status: native in North America; native in Canada; native in United States. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

Do white-footed woods mosquitoes bite?

Yes, they are aggressive feeders and their bites are painful.

Source: Wikipedia

Can they spread disease?

They can carry Venezuelan equine encephalitis virus and have been found to transmit West Nile virus in limited cases.

Source: Wikipedia

Where do they live?

They inhabit wet woodlands and breed in temporary rain-filled pools.

Source: Wikipedia

When are they active?

Adults are active both during the day and at night.

Source: Wikipedia

Same family (Culicidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Psorophora_ferox

Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia

Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.