. Bulletin of the Department of Agriculture. Agriculture. THE SO-CALLED TOBACCO WIREWORM IN VIRGINIA. ing a little beyond the middle of the costa, extending outward, forming a very acute angle, thence backward across the end of the cell to the hind margin, a little beyond the middle, and giving off an outward angle on the fold. Subterminal line dark brown, edged outwardly with dark lead-colored scales, and frequently dentate along the first part of its course. It arises from the costa about half way between the median line and the apex, extending down to a point beyond the end of the cell
. Bulletin of the Department of Agriculture. Agriculture. THE SO-CALLED TOBACCO WIREWORM IN VIRGINIA. ing a little beyond the middle of the costa, extending outward, forming a very acute angle, thence backward across the end of the cell to the hind margin, a little beyond the middle, and giving off an outward angle on the fold. Subterminal line dark brown, edged outwardly with dark lead-colored scales, and frequently dentate along the first part of its course. It arises from the costa about half way between the median line and the apex, extending down to a point beyond the end of the cell, where it forms an out- ward angle, thence to the hind margin, a little within the anal angle, giving off an inward angle on the fold. This angle is frequently connected along the fold with the outward angle of the niedian line; terminal line dark brown, rather indistinct. The lines are often obliterated more or less, especially the median. Fringes dark leaden gray. Hind ^'^•ings dark fuscous; fringes a little lighter. [Fernald, I89G.] (See fig. 1.) The moths vary somewhat m color and distinctness of markings, some specimens being much darker than others when first trans- formed. In the hind wing the frenulum is a single short spine in the male. In the female the frenulum is more slender and is very finely diA-ided at the tip. In the female of a number of other species of this genus the frenulum consists of two dis- tinct spines. LIFE HISTORY. HABITS OF THE MOTHS. The moths fly during late afternoon, on dark days, and during the early part of the night. They are attracted to light, but in comparatively small num- bers considering their great abundance at certain times. The majority of the females collected at trap lights are those which have deposited their eggs. During the day, when disturbed, they make short, erratic flights, usually alighting head downward on the stems of weeds and grasses, their tightly closed wings and grayish color making them very inconspic- uous. As
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
