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#1 NUISANCE
MOSQUITO IN VA
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Ochlerotatus japonicus
photo by Ary Farajollahi, Rutgers University
Medium size mosquito
Proboscis: dark
Palpi: dark scaled.
Thorax: Dark scutum with lyre-shaped yellow or golden
markings...having a yellow median longitudinal line down
center and full length...also 2 more median yellow stripes
running about halfway of scutum from anterior end. The
lateral sides have broad patches of silver-white scales.
Abdomen: Silver-white scales form basal banding on dorsal
side...silver-white spots on lateral sides.
Legs: Dark with silver-white knee spots and basal rings on
tarsi...hind femur pale on dorsal side and anterior
end...hind legs only have banding on 1 - 3 tarsi.
Bionomics: Temperate zone species...It is expected to spread
South to Florida and North to Canada. Larvae are large,
cream color, with dark brown to black heads. They are found
in rock pools, tree holes and containers. They overwinter in
the larval stage and could be among first larvae collected
in Spring. The adults are active during the day and will
bite man. They are attracted to carbon dioxide. Flight range
...up to 600'.
Disease: Vector of West Nile Virus.
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