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Published online by Cambridge University Press: 31 May 2012
Young specimens of the larva of this species were found last year, about half grown, under chips and logs in open fields early in May. They had evidently wintered in the larval state, and had but lately aroused from their winter's sleep. No description of the larva was taken until May 25th, when it was full grown.
Length, 1-25 inch, cylindrical.
Head: medium sized, flattened, black, with two diverging whitish lines down the front and one across, forming a small triangle ; a patch of dots of the same colour on sides ; palpi whitish, tipped with black ; mandibles black.
Body above, dirty brown, with a faint yellowish tinge; a dorsal line of a paler hue, and a subdorsal yellow line, most distinct from fifth to twelfth segments, nearly obsolete on the anterior ones.