212 THE MOSQUITOES OF NEW JERSEY 



"The larvae are active at the surface of the water for the first 

 twenty-four hours, after which they move to the bottom when disturbed 

 and can remain there as long as forty-seven minutes without coming to 

 the surface for air. 



"The larvae are not 'wrigglers' in the true sense of the term. They 

 jerk characteristically when suddenly disturbed, but ordinarily move 

 from the top to the bottom of the vessel at an angle of about 45°, with 

 little motion save the rapid movement of the oral cilia. The passing of 

 the larvae from the top to the bottom of the water with apparently 

 little effort gives them a graceful appearance. While at the bottom of 

 the glass they catch large bundles of spirogyra, which are broken into 

 smaller pieces as the surface is approached." 



The earliest larva taken in New Jersey was at Hemlock Falls, June 

 20. It was next found in a large woodland pool with partly rocky bot- 

 tom, on the Garret Mountain, near Paterson. On June 30 larvae were 

 taken from the South Orange Mountain, from which adults were ob- 

 tained July 2 and 3. On July 15 larvae occurred at the College Farm 

 and near the old copper mines at Arlington. August 8 there was another 

 brood at the College Farm, and on the fifteenth others were taken at 

 Livingston Park. During this month the adults were found in the Great 

 Piece Meadow, and during September large numbers of larvae in the 

 woodland pools there and in the Troy Meadows. As late as September 

 30 the larvae were found in numbers, full grown and ready for the 

 change. Pupation began October 1, and the first adult occurred Octo- 

 ber 4. Development during the summer is very rapid, but in late fall it 

 becomes much slower. 



Altogether, while this species is sometimes common and bites hard, it 

 can scarcely be considered a pestiferous species, because it does not 

 leave the woods and breeds only in such swampy areas as are not often 

 visited. 



Uranotaenia sapphirina Osten-Sacken 

 The Sapphire-Lined Mosquito 



DISTKIBUTION AND CHARACTERIZATION 



[Eastern United States from New Hampshire to the Gulf of Mexico, 

 Florida, and Cuba. Trapped 1,850 females in New Jersey.] 



Small dark brown with beak and legs unhanded; large white dot at 

 apices of femora and tibiae. Thorax marked with metallic blue spots ; 



