. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 390 CAROLINE BURLING THOMPSON. that they are the newly hatched forms. These specimens meas- ure from i to mm. in length, and have twelve antennal segments, the third segment being deeply grooved or subdivided. Like the very young nymphs of the other termite genera de- scribed above, these young nymphs of A. fumosus are externally all alike but are differentiated internally into (a) the reproductive nymphs, with large brain and large sex organs (Fig. 7, a), and (b) the worker-soldier nymphs, with small brain and small sex
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 390 CAROLINE BURLING THOMPSON. that they are the newly hatched forms. These specimens meas- ure from i to mm. in length, and have twelve antennal segments, the third segment being deeply grooved or subdivided. Like the very young nymphs of the other termite genera de- scribed above, these young nymphs of A. fumosus are externally all alike but are differentiated internally into (a) the reproductive nymphs, with large brain and large sex organs (Fig. 7, a), and (b) the worker-soldier nymphs, with small brain and small sex organs (Fig. 7, b}. An unusually long slender labrum is present in both types of nymphs, and is characteristic of the three genera of this family here described. The older nymphs of A. fumosus, about 2 mm. long, or less, are differentiated into the "small-headed," large-brained, repro- ductive type, and the "large-headed," small-brained worker- soldier type. My material was not very abundant, but was sufficient to show that the early development of A. fumosus is similar to that of the other termites here described. Amitermes tubiformans Buckley.—The eggs of A. tubifor- mans measure from to mm. in length (Fig. I, g).. FIG. 8. Amitermes tubiformans, newly hatched nymphs, a, head of reproductive nymph; b, head of worker nymph. Oc. 6, obj. 16, reduced one third. The youngest nymphs examined are from to i. mm. long, and have antennse with eleven segments, the third segment bare, but subdivided into two parts. One of these nymphs had a piece of the egg shell still adhering to the abdomen, so that they are evidently the newly hatched forms. The newly hatched nymphs of A. tubiformans are externally all alike, but are differentiated internally into (a) reproductive. 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 perf
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
