Aedes Species
- 94% of all mosquitoes collected in 2025
- 99% of the mosquitoes collected near Garden Valley Road in 2025
- 93% of the mosquitoes collected near North Cedar Point Road in 2025
Aedes vexans
- Host preference: Humans and other large mammals; will feed on large birds if no mammals present
- Larval habitat: Temporary pools, ditches, irrigation water
- Flight range: Up to 20 miles
- Biting activity: Day or night, but peaks at dusk
- The most commonly collected mosquito. This species is responsible for large nuisance outbreaks in areas where prolific production can occur.
Aedes sierrensis
- Host preference: Primarily small mammals, but will bite humans, large mammals and birds
- Larval habitat: Tree holes and sometimes artificial containers
- Flight range: Very limited, stays close to breeding sites
- Biting activity: Aggressive biter, peak activity mid-morning and late afternoon
- Known as a primary vector of canine heartworm. Not a known vector of human pathogens.
Aedes excrucians
- Host preference: Primarily deer and other large mammals including humans, will also bite birds.
- Larval habitat: Single generation of eggs hatch early in the season. Larvae prefer forested areas with early season moderate to deep pools lined with leaf litter or shallower depressions that retain water through spring.
- Flight range: Very limited, stays close to breeding sites
- Biting activity: Aggressive biter, peak activity morning and late afternoon. Known for excruciatingly irritating bites causing intense itching and welts.
- Plays a role in dog heartworm transmission. Not a known vector of human pathogens. Bridge host between mammals and birds.
Anopheles Species
- 1% of all mosquitoes collected in 2025
- 34% of the mosquitoes collected near Fairview Road and Central in 2025
- 2% of the mosquitoes collected near Coquille River Walk in 2025
Anopheles punctipennis
- Host preference: Humans, mammals and birds
- Larval habitat: Semi-permanent and permanent ponds, shaded pools along creeks or streams, slow-moving streams, ditches
- Flight range: Limited but have been known to occasionally fly up to 1 mile
- Biting activity: Day and dusk
- Known as a vector of Malaria and a good carrier for dog heartworm.
Coquillettidia Species
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1% of all mosquitoes collected in 2025
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20% of the mosquitoes collected near Beaver Slough Scales in 2025
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Known as a bridge vector for Eastern Equine Encephalitis
Coquillettidia perturbans
- Host preference: Birds and mammals
- Larval habitat: Permanent freshwater marshes and swamps with emergent aquatic vegetation, especially cattails.
- Flight range: Up 5 miles
- Biting activity: Most active at dusk.
Culex Species
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3% of all mosquitoes collected in 2025
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35% of the mosquitoes collected near Fairview Road and Central
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30% of the mosquitoes collected near Coquille River Walk
These species are the primary vectors of West Nile Virus in Oregon. They are also known as vectors of St. Louis Encephalitis and California Encephalitis. Although two Culex species were collected, their numbers were relatively low indicating there are not significant production sites in nearby areas.
Culex tarsalis
- Host preference: Humans, mammals and birds
- Larval habitat: Permanent water drainage ditches, woodland pools, ponds
- Flight range: Up to 15 miles
- Biting activity: Night, dusk, dawn
- This species is considered a painful and persistent biter and is an efficient vector of several disease-causing agents.
Culex pipiens
- Host preference: Mainly birds, but will bite mammals, including humans
- Larval habitat: Standing or stagnant water with organic content, artificial containers
- Flight range: Short, up to ½ mile
- Biting activity: Night, dusk, dawn
- This species is considered a persistent biter, preferring birds but will bite humans in the absence of its preferred avian hosts.
Culiseta Species
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1% of all mosquitoes collected in 2025
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47% of the mosquitoes collected near Beaver Slough Scales in 2025
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12% of the mosquitoes collected near Fairview Road and Central in 2025
Culiseta particeps
- Host preference: Mostly larger mammals, but will bite humans occasionally
- Larval habitat: Small cut-off pools of streams and shallow margins of cattail-filled pools in wooded or semi-wooded habitats.
- Flight range: not documented
- Biting activity: Primarily dusk and dawn
- Not a known vector of disease thus poses little to no risk.
Culiseta incidens
- Host preference: Humans and large mammals
- Larval habitat: Ditches, drainage channels, woodland pools, ponds
- Flight range: Moderate, up to 1 mile
- Biting activity: Primarily dusk and dawn
- Not a known vector of human pathogens and not a major transmitter of dog heartworm. These species pose little to no risk of disease.