. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Bui. 86, Bureau of Entomology, U. S. Dept. of Agriculfure. Plate Effects of Plant-bug Attack on Cotton Bolls. Fig. 1.—Boll with section of carpel removed to show plant-bug injury. Fig. 2.—Portion of full- grown cotton boll, showing lock of cotton ruined by destruction of seed at apex by Thyanta cuatator. Fig. 3.—Lint partly removed from seeds to show discoloration by cotton stainer (Bys- dercus suturellus); a, Seed and attached lint from uninjured boll; b-c, same from boll dam- aged by cotton stainer, showin
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Bui. 86, Bureau of Entomology, U. S. Dept. of Agriculfure. Plate Effects of Plant-bug Attack on Cotton Bolls. Fig. 1.—Boll with section of carpel removed to show plant-bug injury. Fig. 2.—Portion of full- grown cotton boll, showing lock of cotton ruined by destruction of seed at apex by Thyanta cuatator. Fig. 3.—Lint partly removed from seeds to show discoloration by cotton stainer (Bys- dercus suturellus); a, Seed and attached lint from uninjured boll; b-c, same from boll dam- aged by cotton stainer, showing lint stained deepest close to seed. Fig. 4.—Decay of seeds in immature cotton boll as a result of feeding by plant-bugs; no external evidence of injury. Fig. 5.— Exterior of cotton boll injured by Calocoris rapidus. Fig. 6.—Cross section of immature cotton seed damaged by Pentatomid bugs. Fig. 7.—Inside of carpel of cotton boll, showing feeding punctures by plant-bugs. (Arrows point to punctures without proliferation.) Fig. 8.—Cotton boll showing external spots referred to on page 16. (Original.). 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 United States. Bureau of Entomology. Washington : G. P. O.
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