Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomol00smit Year: 1906 AlV ECONOMIC ENTOMOLOGY. where they are rather abruptly terminated. The larvae are leaf- miners, and perhaps the most common species is the Odo7itota dorsalis, or locust-beetle, which occurs abundantly on the leaves in early summer, and is orange in color, with a broad black stripe on the centre of each elytron. The eggs are covered with a little mass of excrement, and are laid singly, few leaves con- tain
Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomol00smit Year: 1906 AlV ECONOMIC ENTOMOLOGY. where they are rather abruptly terminated. The larvae are leaf- miners, and perhaps the most common species is the Odo7itota dorsalis, or locust-beetle, which occurs abundantly on the leaves in early summer, and is orange in color, with a broad black stripe on the centre of each elytron. The eggs are covered with a little mass of excrement, and are laid singly, few leaves con- taining more than two or three. Not much real injury is done by any of the species, and the suggestion that the adults feed exposed and succumb readily to the arsenites is all that is neces- sary on the subject of remedies. The adult Cassidce are called 'tortoise-beetles,' or, by the sweet-potato grower, 'golden bugs.' They are characterized by their broad, almost quadrate form, flat under and convex upper side, and by the more or less metallic-yellow or golden color of the elytra and upper surface generally. Most of the species feed upon Convolvulus^ to which natural family the sweet- potato belongs, and the ^^^- ^^^' latter is about the only cul- tivated crop suffering from the attacks of insects of this series. The beetles hiber- nate and appear in the sweet- potato fields as soon as the crop is set out, eating irreg- ular holes in the leaves, and laying their eggs, encased in a mass of excrement, on the under surface. The larvae are known as 'peddlers,' because they have piled upon a pair of anal forks all the cast skins and a part of their excrement, forming a sort of shelter, umbrella, or 'pack,' to which latter resemblance they owe the common name. The most abundant form is the Cassida bivittata, or 'two-striped tortoise-beetle,' so named from the two black stripes on each wing-cover. Following closely is the Coptocycla Coptocycla auiiclialcea.—a, larvae, or ped- dlers,
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