. Bulletin - New York State Museum. Science. AQUATIC INSECTS IN NEW YORK STATE 221 CaLOPTERYX This strongly marked genus is abundantly represented about the borders of creeks and small rivers throughout the State, specially where such streams traverse rocky woods. The showy imagos, with their black or smoky wings, and bodies of brilliant metallic green, are very conspicuous, and well known insects. They usually remain in proximity to their native streams, but sometimes follow paths for a considerable distance through adjacent woods. Their flight is poor and fluttering, and on windy or cloudy d
. Bulletin - New York State Museum. Science. AQUATIC INSECTS IN NEW YORK STATE 221 CaLOPTERYX This strongly marked genus is abundantly represented about the borders of creeks and small rivers throughout the State, specially where such streams traverse rocky woods. The showy imagos, with their black or smoky wings, and bodies of brilliant metallic green, are very conspicuous, and well known insects. They usually remain in proximity to their native streams, but sometimes follow paths for a considerable distance through adjacent woods. Their flight is poor and fluttering, and on windy or cloudy days they keep rather closely to shelter. The. Pig. 3 Nymph of Calopteryx maculata nymphs rest on silt-covered vegetation or on roots swaying in the current, and are rather inactive, moving but little from place to place. The known nymphs agree in the possession of long cylindric bodies, heads dorsally depressed, antennae with unusually de- veloped basal segment, exceeding in length all the other seg- ments put together, labium with a median cleft which divides the median lobe far below the level of the bases of the lateral lobes, a pair of spinules beside lite clefl within, and three others at the base of each lateral lobe, legs long and thin, radiately arranged, gills three, variable in proportions, bu1 always stout, the lateral pair wiih external carina, the middle one two-edged, all easily broken off, and generally wanting from specimens that, have received too rough 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 New York State Museum; New York State Museum. Albany : New York State Education Dept
Size: 1887px × 1324px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
