. Annual report. 1st-12th, 1867-1878. Geology. 766 REPORT UNITED STATES GEOLOGICAL INSECTS INFESTING THE PEA. The Pea-Weevil, Bruchus pisi Linn. (Fig. 33).—Infesting seed-peas, living in the pea its wliole life; a rusty black weevil-like beetle, spotted with lighter shades; a little ?over a tenth of an inch long. The pea-weevil belongs to a small family of beetles called BrucMdce, from Bruchus, the name of the principal genus, of which there are 300 species known. They differ from the true weevils in the proboscis being folded on the chest, the antennae being short and straight and in
. Annual report. 1st-12th, 1867-1878. Geology. 766 REPORT UNITED STATES GEOLOGICAL INSECTS INFESTING THE PEA. The Pea-Weevil, Bruchus pisi Linn. (Fig. 33).—Infesting seed-peas, living in the pea its wliole life; a rusty black weevil-like beetle, spotted with lighter shades; a little ?over a tenth of an inch long. The pea-weevil belongs to a small family of beetles called BrucMdce, from Bruchus, the name of the principal genus, of which there are 300 species known. They differ from the true weevils in the proboscis being folded on the chest, the antennae being short and straight and inserted in a cavity next to the eyes. The beetles are short and broad, and are noted for their activity and readiness to take flight when disturbed. The pea-weevil is oval in form, about an eighth of an inch long, rusty black, with a white spot on the hinder part of the prothorax, and four or Eve white dots behind the middle of each elytron and a T-shaped white spot on the tip of the abdomen. They frequent the pea during and just after the flowering season. , Harris states that" after the pea-vines have flowered, and while the podS; are young and tender, and the peas within them are just beginning to^ swell, the beetles gather upon them, and deposit their tiny eggs singly in the punctures or wounds which they make upon the surface of the ; Other authors state that with their beak they puncture the i base of the flower and ' lay an egg in the punct- /ure. Kiley tells us in ; his Third Report (p. 47) . that " the eggs are deep :; yellow, inch long, - three times as long as wide, fusiform, pointed Tig. 33.—Pea-Weevil, natural size; h, much enlarged; c, jj^ J^^O^*, blunt JDChind, larva, natural size and enlarged: d, pupa seen from above, but larger anteriorly natural size and enlarged; gf, the beetle coming out of than posteriorly. They -. the pea (after Curtis); /, egg (after Eiley). ^j,q fastened to the pod by some viscid fluid which dries white and g
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