![](http://www.alamy.com/thumbs/6/5577073F-46B9-4118-B21E-2EFB60A74E89/REKM19.jpg)
. The Clear Lake gnat. Diptera; Diptera. 8 University of California—Experiment Station style is very similar to that of punctipennis. For a complete technical description of the species the reader is referred to the citation in foot- note 3. LIFE HISTORY Egg Stage.—Eggs are freely deposited by the female gnats in captivity. The numerous minute dark lead-colored, cigar-shaped eggs (fig. 3, B) are deposited on the surface of the water where they form geometrical designs as do the eggs of anopheline mosquitoes. Unlike the eggs of most mosquitoes the gnat eggs sink to the bottom when the water is
. The Clear Lake gnat. Diptera; Diptera. 8 University of California—Experiment Station style is very similar to that of punctipennis. For a complete technical description of the species the reader is referred to the citation in foot- note 3. LIFE HISTORY Egg Stage.—Eggs are freely deposited by the female gnats in captivity. The numerous minute dark lead-colored, cigar-shaped eggs (fig. 3, B) are deposited on the surface of the water where they form geometrical designs as do the eggs of anopheline mosquitoes. Unlike the eggs of most mosquitoes the gnat eggs sink to the bottom when the water is slightly agitated. Under laboratory conditions the eggs hatched within 12 hours. Under natural conditions in cooler water the incubation period would. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Herms, William B. (William Brodbeck), 1876-1949. Berkeley, Cal. : Agricultural Experiment Station
Size: 3468px × 721px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookpublisherberkeleycalagr, booksubjectdiptera