. Bulletin - New York State Museum. Science. AQUATIC INSECTS IN NEW YORK STATE 447 from water [fig. 22]. Miall's observations of S. lutaria quite agree with this, and he further states that the adult emerges after two or three weeks. Adults. These have already been described above. They are very awkward fliers and are easily caught even without a net. This quite agrees with the .generalized form of the wing venation [fig. 23]. In fact, the adults when approached, will often run rather than attempt to fly. It is probable that the insect lives in the winged form only a few days. All specimens ta
. Bulletin - New York State Museum. Science. AQUATIC INSECTS IN NEW YORK STATE 447 from water [fig. 22]. Miall's observations of S. lutaria quite agree with this, and he further states that the adult emerges after two or three weeks. Adults. These have already been described above. They are very awkward fliers and are easily caught even without a net. This quite agrees with the .generalized form of the wing venation [fig. 23]. In fact, the adults when approached, will often run rather than attempt to fly. It is probable that the insect lives in the winged form only a few days. All specimens taken were found to die within three days. The dates on which the adults have been collected near Ithaca range from May 13 to June -t a .i -i • o Fig. 22 Pupa of Slalls Infumata x3 lb, through a series of years. (After Needham) They are diurnal in their habits and seem to prefer bright sunshine. I have found them most abundantly in their egg-laying places at midday, though they also frequent the same places and are active till almost dark. The short life taken with the fact that the mouth parts of the adult are very poorly developed, would indicate that the adults do not take food. It was reported to Dr Hagen and to the national museum some years ago that the adults of S. nevadensis were very injurious to grapevine leaves. This is the only case of injury yet charged to any members of the family, and may be a. 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
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
