Ps ciliata

Photo Courtesy of Garrie Rouse, grouse@mattaponi.com

 

Very large mosquito

Proboscis: long, scales on basal half long, dark brown, suberect, yellow and speckled with dark beyond middle, tip dark.

Palpi: about one-third as long as proboscis, clothed with dark-brown suberect scales, those at tip black.

Head: Occiput with broad appressed grayish-white scales dorsally and with a narrow median bare stripe, numerous brown setae anteriorly and pale erect forked scales posteriorly; lateral region of occiput with brown setae but without scales. Tori brown, with a few small dark setae on inner surface.

Thorax: Integument of scutum dark brown. scutum marked as follows: a narrow median stripe of pale-golden lanceolate scales extending to the scutellum; a narrow nude submedian stripe on either side extending from the anterior margin of the scutum to the prescutellar space; a narrow stripe of narrow brown scales and dark setae extending from anterior third of scutum posteriorly along the sides of the prescutellar space, followed by a broad nude area on either side; sides of the scutum with broad appressed pale-yellow to white scales; prescutellar space with white scales on either side of the median gold stripe. Scutellum with grayish-white and pale-golden scales and light-brown setea on the lobes. Pleura with patches of grayish-white appressed scales.

Abdomen: 1st tergite with a median patch of grayish-white scales; remaining tergites pale yellow to brown-scaled, the pale scales predominating dorsally, the brown laterally. Venter primarily white-scaled.

Legs: Femora yellow-scaled, speckled with dark on basal two-thirds to three-fourths, apical part of each densely clothed with long dark erect scales. Tibiae each with long dark scales except for a narrow basal ring of yellow appressed scales. Front and middle tarsi with appressed scales; Segments 1 to 3 pale basally, dark apically; segments 4 and 5 usually dark. Each segment of hind tarsus with basal ring of pale appressed scales; scales beyond basal ring long, dark, erect on segments 1 and 2, dark and suberect or recumbent on segments 3 to 5.

Wings: length 6.0 to 6.5 mm. Scales narrow, brown; a few pale scales distributed on costa, subcosta and vein 1.

Bionomics: They overwinter as an egg. Eggs are deposited in small depressions or cracks in the soil. larvae are found in temporary rain-filled pools where they develop rapidly …usually requiring 4 to 6 days …the pupal stage is usually about 2 days. The larvae are predacious …feeding on other mosquito larvae. Larvae can be found from March to October. They are seldom abundant. The females are persistent biters, attacking any time during day when their haunts are invaded. Flight range is 1 to 2 miles.