. Continuous mass rearing of the European corn borer in the laboratory. European corn borer. Fig. 1.—Three types of cages used in continuous mass rearing of European com borer larvae: A, cage No. 1 with beans inside and with humidifier underneath; B, cage No. 2 with beans inside and with humidifier underneath; C, cage No. 3 with part of paper carton torn to show beans Fig. 2.— Cages No. 1 and No. 2 and their component parts. A is cape No. 1 complete, including top (top of 60-mm. petri dish), and B, C, D are component parts: S, 1-1/2-inch length of Lucite tubing (2 inches in diameter,
. Continuous mass rearing of the European corn borer in the laboratory. European corn borer. Fig. 1.—Three types of cages used in continuous mass rearing of European com borer larvae: A, cage No. 1 with beans inside and with humidifier underneath; B, cage No. 2 with beans inside and with humidifier underneath; C, cage No. 3 with part of paper carton torn to show beans Fig. 2.— Cages No. 1 and No. 2 and their component parts. A is cape No. 1 complete, including top (top of 60-mm. petri dish), and B, C, D are component parts: S, 1-1/2-inch length of Lucite tubing (2 inches in diameter, one-eighth-inch wall thickness) with 80-mesh brass screen wire bottom; C, aluminum dish (32 mm. in diameter) to hold the beans; and, D, enameled copper wire in the form of a rough M or W to serve as a spacer beneath the aluminum dish. £ is cage No. 2 complete, including top (top or bottom of 95-mm. petri dish), and F, G are component parts: F, 1-1''2-inch length of Lucite tubing (3-1 '4 inches in diameter, one-eighth-inch wall thickness) with SO-mesh brass screen wire bottom and, C, one of two discs (2-3 4 inches in diameter) made from 18 x 14 mesh copper window-screen wire. (A layer of beans is laid between the two discs when the cage is in operation.). 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 Surany, Paul; Illinois. Natural History Survey Division. Urbana, Ill. : Illinois Natural History Survey
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