. A manual for the study of insects. Insects. COLEOPTERA. 569 is a large fleshy grub, and infests the roots of grape, apple, poplar, and other trees. The Tile-horned Prionys, Prionus imbricornis (P. im- bri-cor^nis), is very similar to the preceding species, but can be distinguished at a glance by the form of the antennae. In the antennae of the male the number of the segments varies from eighteen to twenty, while in the female the nunriber varies from sixteen to seventeen. The popular name refers to the fact that the segments of the antennae of the male overlap one another like the tiles on a
. A manual for the study of insects. Insects. COLEOPTERA. 569 is a large fleshy grub, and infests the roots of grape, apple, poplar, and other trees. The Tile-horned Prionys, Prionus imbricornis (P. im- bri-cor^nis), is very similar to the preceding species, but can be distinguished at a glance by the form of the antennae. In the antennae of the male the number of the segments varies from eighteen to twenty, while in the female the nunriber varies from sixteen to seventeen. The popular name refers to the fact that the segments of the antennae of the male overlap one another like the tiles on a roof. The larva infests the roots of grape and pear, and also feeds upon the roots of herbaceous plants. The Straight-bodied Prionid, Orthosoma briinneum (Or- tho-so^ma brun^ne-um), is also a common species. The body is long, narrow, and somewhat flattened ; it measures one inch to one and one-half inches in length, and is of a light- brow^n color. The prothorax is short, and is armed on each side with three sharp spines. The sides of the wing-covers are very nearly parallel; this suggests the common name. The adult flies by night, and is often attracted to lights; the larva is supposed to infest pine. Subfamily Cerambycin^ (Ce-ram-by-ci'nae). The Typical Cerambycids {Ce-ram'by-cids^ In this subfamily the prothorax is rounded on the sides, the the tibiae of the fore legs are not grooved, and the palpi are never acute at tip. There are nearly four hundred American species, representing more than one hundred genera. The few species mentioned below are those that the beginning student is most likely to meet. The Ribbed Pine-borer, Rhagium lineatum (Rha'gi-um lin-e-a'tum).—This is a gray beetle mottled with black, and has a narrow thorax, f^g. 692. with a spine on each side (Fig. 692). It received its name because of the three ridges extending lengthwise on each. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readab
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1895
