Insects affecting the cotton plant . nd several leaf-feeding beetles have been foundupon the cotton plant, but need not be particularly mentioned many portions of Texas the leaves are frequently cut off by theso called leaf-cutting ;mt, (Ecodoma fervens. One of the few practicalremedies against this destructive insect, which damages fruit trees andother field crops as well as cotton, consists in tracing the ants to theirnest (which is often an extremely difficult thing to do) and destroyingthem there by copious applications of kerosene or bisulphide of method, which has
Insects affecting the cotton plant . nd several leaf-feeding beetles have been foundupon the cotton plant, but need not be particularly mentioned many portions of Texas the leaves are frequently cut off by theso called leaf-cutting ;mt, (Ecodoma fervens. One of the few practicalremedies against this destructive insect, which damages fruit trees andother field crops as well as cotton, consists in tracing the ants to theirnest (which is often an extremely difficult thing to do) and destroyingthem there by copious applications of kerosene or bisulphide of method, which has been, practiced with some success by anintelligent Texan, is to spread a line of cyanide of potassium across thewell-defined path by which the ants leave their nest; this kills verymany, and deters the ants from taking the direction of the particular paththus obstructed. INSECTS DAMAGING THE STALK. Puncturing of the terminal portion of the stalk by plant bugs occa-sionally occurs, but is comparatively rare. There is but one borer in. FlG. 16.—Cotton stalk borer (Ataxia crypta): a, larva from above; b, larva from side; c, tunneledcotton stalk stowing exit hole; d, adult beetle—all enlarged except c (authors illustration). the stalks of cotton, and that is the long-horned beetle known as Ataxiacrypta (fig. 16). It is occasionally mistaken for an enemy to the plant,but investigation has shown that it lays its eggs upon and its larvae boreinto only such stalks as have been damaged by some other cause, suchas rust. It follows injury to the plant, therefore, rather than causes it. INSECTS INJURING THE BOLL. As in the case of the stalk borer just mentioned, numerous speciesof insects are found in damaged bolls which are the result, rather thanthe cause, of the damage. Several little Nitidulid beetles are found in 29 such injured bolls, and a number of other insects have been sent to theDivision of Entomology of this Department from time to time with thestatement that they threaten
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