. A treatise on some of the insects injurious to vegetation . Insect pests. 410 LEPIDOPTEEA. The hop-vine Hepiolus has not yet been detected in Mas- sachusetts ; hut we have a much larger species, known to me only in the moth state, which is the reason of my hav- ing given the foregoing account of the preparatory stages of a European species. This moth does not appear to have been described. It is named in my Catalogue of the In- sects of Massachusetts, Hepiolus argenteo-maculatus (Fig. 202), the silver-spotted Hepiolus. Its body and wings are Kg. rather long. It is of an ashen-gray colo
. A treatise on some of the insects injurious to vegetation . Insect pests. 410 LEPIDOPTEEA. The hop-vine Hepiolus has not yet been detected in Mas- sachusetts ; hut we have a much larger species, known to me only in the moth state, which is the reason of my hav- ing given the foregoing account of the preparatory stages of a European species. This moth does not appear to have been described. It is named in my Catalogue of the In- sects of Massachusetts, Hepiolus argenteo-maculatus (Fig. 202), the silver-spotted Hepiolus. Its body and wings are Kg. rather long. It is of an ashen-gray color; the fore wings are variegated with dusky clouds and bands, and have a small triangular spot and a round dot of a silvery white color near their base; the hind wings are tinged with ochre-yellow towards the tip. It expands two inches and three quarters. A much larger specimen was found by Professor Agassiz near Lake Superior.* The locust-tree, Rohinia pseudacaeia, is preyed upon by three different kinds of wood-eaters or borers, whose un- checked ravages seem to threaten the entire destruction and extermination of this valuable tree within this part of the United States. One of these borers is a little reddish cater- pillar, whose operations are confined to the small branches and to very young trees, in the pith of which it lives; and by its irritation it causes the twig to swell around the part attacked. These swellings being spongy, and also perforated * See a figure of it in his " Lake Superior," pi. 7, fig. 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 Harris, Thaddeus William, 1795-1856; Flint, Charles Louis, 1824-1889. Boston : William White, printer to the state
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