. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. Black-headed Fireworm. Fig. 5. Cranberry leaves with fruiting bodies of a fungus (Venturla compacta Pk.) olten mistaken by growers for its eggs. Much enlarged. Fig. 6. Larva. Considerably enlarged. Fig. 7. Moth. Much enlarged. (From U. S. Dept. Agr. Farmers' Bui. 860.) worms generally take nearly tiiree weeks to mature, but those of the second brood mature in about two weeks. The second brood sometimes works till well into August, even on bogs bared of the winter water in April. The Pupa. In Massachusetts
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. Black-headed Fireworm. Fig. 5. Cranberry leaves with fruiting bodies of a fungus (Venturla compacta Pk.) olten mistaken by growers for its eggs. Much enlarged. Fig. 6. Larva. Considerably enlarged. Fig. 7. Moth. Much enlarged. (From U. S. Dept. Agr. Farmers' Bui. 860.) worms generally take nearly tiiree weeks to mature, but those of the second brood mature in about two weeks. The second brood sometimes works till well into August, even on bogs bared of the winter water in April. The Pupa. In Massachusetts and New Jersey the mature worms generally leave the vines to pupate on tiie sand or in the trash beneath them. The pupa often is naked but usually is in a light case of silk and sand or fallen leaves. If water happens to be standing under the vines, the worms all pupate among the webbed foliage. They generally do this in Wisconsin, probably because most of the bogs there are poorly drained. The pupa is light brown at first, but it gets almost black iiefore the moth emerges. The pupal period of the first brood is nearly two weeks, and that of the second about a week and a half. The Math. The moth (fig. 7 and Plate One, lig. 6) is dark grayish brown and so small that it often is mistaken for a fly when in flight. It expands somewhat over three-eighths of an inch. The fore wings are marked with gray-brown and silver-gray l)ands. The female may lay eggs within a day after It emerges. The moths fly little during the day unless it is warm and very cloudy, but they are flushed up easily. At dusk they fly and hover freely just above the 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 Massachusetts Agricultural Experiment Station. Amherst, : Massachusetts Agricultural Experiment Station, 1907-1974
Size: 1241px × 2013px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthormassachusettsagricult, bookcentury1900, bookdecade1900
