One of the earliest appearing spring species. Larvae found in shallow margins of pools, ditches, etc. with heavy emergent vegetation.

Larvae form clumps along grassy margins. Associated with intermittently flooded pastures. Can have 10 or more generations per year.

This species breeds in tree holes, which are water filled rot cavities or depressions found in many species of trees, especially oaks, bay laurel, eucalyptus, sycamore and elm. Any container near trees, that is partially filled with water and leafy debris, may also produce this pest. The eggs hatch when the tree hole or container fills with water. The adults emerge in March and remain in the area…

The Winter Salt Marsh Mosquito (Aedes squamiger) is one of 53 types of mosquitoes that occur in California and is a distinctive black and white mosquito that breeds in California coastal pickle weed tidal and diked marshes. Salt marsh pools that are diluted by winter and early spring rains are especially favored breeding sites. Other sites include the cracked ground of diked wetlands and old…

Larvae found in ditches, ponds, willow groves, berry vine filled depressions and densely shaded water sources.

Larvae found in slow moving streams and pools of water containing rich growth of green algae and exposed to good sun. Over winter as adults. Peak biting activity is dusk and dawn. Flight range is less than one mile.

Larvae prefer clear, fresh seepage water in sunlit or partly shaded pools. Also found in rice fields and roadside ditches with grass. Over winter as adults. Peak biting activities is dusk and dawn. Flight range is up to 10 miles from its breeding site.

Larvae found in ponds, creeks, streams, swamps, and seepages. Peak abundance in May and July. Over winter as both adults and larvae.

The Woodland Malaria Mosquito (Anopheles punctipennis) is one of 53 types of mosquitoes that occur in California. This is the most common Anopheles mosquito in the Sierra Nevada foothills and coastal ranges of California. Preferred habitat is wooded areas along seasonal creeks and year-round rivers and streams.

Larvae found in cut-off pools along woodland watercourses and roadside ditches, Larvae present April through December. Over winter as adults.

Larvae found along the edges of slow moving streams or isolated pools of streams in open to partly shaded areas.

Larvae found in tule swamps and ponds. Peak biting activity occurs in shaded or heavily vegetated areas during daylight hours and dusk. Flight range is less than two miles.

Larvae are found in rock pools, isolated ponds and hoof prints along streams and creeks. Also in grassy roadside ditches.

The Winter Marsh Mosquito (Culiseta inornata) is one of 53 types of mosquitoes that occur in California. One of California’s largest mosquitoes, it reaches a size of 10 mm or almost 1/2″. Adults are a light brown or reddish-brown in color with no unusual or distinctive markings. Populations of this mosquito have been found in most California counties. Total developmental time from egg to adult…

Larvae are found in small cut-off pools of streams and the shallow margins of Typha sp. filled pools in wooded and semi-wooded habitats.