. Sacbrood. Bees. Fig. 12.—First stage; Larva showing first symptoms of sacbrood and presenting tlie dorsal view of tlie anterior third. Cap removed artificially. (Original.) This shade deepens somewhat during the stage, but does not become a deep yellow. Anterior third.—The lateral margins and extreme cephalic end of the an- terior third (fig. 12; PI, II, &, h) may have assumed, and frequently do as- sume, a more or less transparent ap- pearance (represented in the figure by shading). The position and the sur- face markings of the anterior third are approximately those of the normal larva
. Sacbrood. Bees. Fig. 12.—First stage; Larva showing first symptoms of sacbrood and presenting tlie dorsal view of tlie anterior third. Cap removed artificially. (Original.) This shade deepens somewhat during the stage, but does not become a deep yellow. Anterior third.—The lateral margins and extreme cephalic end of the an- terior third (fig. 12; PI, II, &, h) may have assumed, and frequently do as- sume, a more or less transparent ap- pearance (represented in the figure by shading). The position and the sur- face markings of the anterior third are approximately those of the normal larva. When a change in the position is observed, however, the extreme anterior end of the larva— the apex of this cone-Uke third—having settled somewhat, does not approach so near the roof of the cell as does that of a healthy larva. It is sometimes found also that this cone-hke third is deflected more or less to one side or the other. Middle and posterior thirds.—The changes from the normal that have taken place in these two thirds are similar and can, therefore be described together. The yellowish tint is here observed. The trans- verse ridges and furrows are still well marked (fig. 13). The trans- FiG. 13.—First stage: Ventral view of larva dead of sacbrood as seen from above and at an angle, giving a ventral view ol all three thirds. Cap torn across. (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 White, G. F. (Gershom Franklin), b. 1875. Washington, Govt. Print. Off.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwa, booksubjectbees
