. Elementary entomology . larvae are parasitic within the wasps, bumble-bees, and grasshoppers, on which the eggs are laid. The adults feed on nectar and pollen of flowers, over which they may be found hovering. The flower-flies (Syrphidae) are medium- to-large-sized, bright-colored flies which feed upon nectar and pollen of flowers, over which they may be seen to hover, almost motion- less, for several seconds and then to dart off and as quickly return. These flies may be readily recognized by a thicken- ing which looks like a vein extending across the middle of the wing. Our more common spec
. Elementary entomology . larvae are parasitic within the wasps, bumble-bees, and grasshoppers, on which the eggs are laid. The adults feed on nectar and pollen of flowers, over which they may be found hovering. The flower-flies (Syrphidae) are medium- to-large-sized, bright-colored flies which feed upon nectar and pollen of flowers, over which they may be seen to hover, almost motion- less, for several seconds and then to dart off and as quickly return. These flies may be readily recognized by a thicken- ing which looks like a vein extending across the middle of the wing. Our more common species of the genus Syrp/uis have the abdo- men marked with alternate bands of black and yellow, and have greenish, bronze, or yellowish bodies. They lay their small, oval, white eggs
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Keywords: ., bookcentury1900, bookdecade1, booksubjectentomology, bookyear1912
