. Elementary entomology. Entomology. METHODS OF COLLECTING INSEC^TS 541 Many insects can be secured in the fall by providing suitable places in which they may hibernate, such as boards, old gunny sacks, etc. placed on the ground. Another method is to place strips of cloth or gimny sacks around the trunks of trees, and examine them frequently for insects. Light traps. Numerous forms of traps have been constructed, to take advantage of the habit of some insects of flying toward the light. One of the simplest of these traps (Fig. 476) is made by placing an ordinary lantern in a shallow pan eighte
. Elementary entomology. Entomology. METHODS OF COLLECTING INSEC^TS 541 Many insects can be secured in the fall by providing suitable places in which they may hibernate, such as boards, old gunny sacks, etc. placed on the ground. Another method is to place strips of cloth or gimny sacks around the trunks of trees, and examine them frequently for insects. Light traps. Numerous forms of traps have been constructed, to take advantage of the habit of some insects of flying toward the light. One of the simplest of these traps (Fig. 476) is made by placing an ordinary lantern in a shallow pan eighteen or twenty inches in diameter and four inches deep. This apparatus is then placed on a stump, fence post, or other con- spicuous locality. The lantern is then lighted, and an inch or two of water, covered with a film of kerosene, is placed in the pan. Leave the trap overnight (the darker the better) and in the morn- ing remove the insects and place them in gasoline or benzine for a short time, to remove the kero- sene. They can then be laid on blotting paper, dried, and mounted in the usual way. Another method of using the trap lantern is to suspend a lantern above a large tin funnel with a diameter of twenty or twenty-four inches. At the bottom of the funnel is placed a cyanide bottle. The insects, particularly beetles, fly against the light and fall into the funnel and, the sides being smooth, roll down into the cyanide bottle. Other more elaborate arrangements may be fitted up, but either of the above forms will do for most cases. Baiting insects. This form of collecting is used principally in capturing moths and other insects that have a fondness for sweets. As usually practiced, the entomologist goes out just at. SXTVS. Fig. 477. The Gillette trap light A lantern is hung over the mouth of the funnel. 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
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