. Outlines of zoology. Zoology. 300 PERI PAT US, MYRIOPODS, AND INSECTS. the junction of the tibia and the first tarsal joint, there is a complicated mechanism which is employed in cleaning the antenna; this is present in all three forms, and varies with the size of the antennae. In the workers the third leg is remarkably modified for pollen gathering purposes. The first tarsal joint bears regular rows of stiff straight hairs on which the pollen grains are collected ; they are borne to the hive in the pollen basket, placed at the back of the tibia, and furnished with numer- ous hairs. In queen
. Outlines of zoology. Zoology. 300 PERI PAT US, MYRIOPODS, AND INSECTS. the junction of the tibia and the first tarsal joint, there is a complicated mechanism which is employed in cleaning the antenna; this is present in all three forms, and varies with the size of the antennae. In the workers the third leg is remarkably modified for pollen gathering purposes. The first tarsal joint bears regular rows of stiff straight hairs on which the pollen grains are collected ; they are borne to the hive in the pollen basket, placed at the back of the tibia, and furnished with numer- ous hairs. In queen and drone, these special ar- rangements of hairs are absent. The second and third thoracic segments bear each a pair of wings. These are largest in the drones and relatively smallest in the queen, who flies but seldom. At the base of each wing there is a respiratory spiracle. In the adult queen and worker, the abdomen is divided into six segments ; in the drone, into seven. There are no abdominal appendages. On the ven- tral surface in the worker, but not in the queen or drone, there are four pairs of wax pockets or glands, which secrete the wax which, after mastication with saliva, is employed in building the combs. The abdomen also bears in queen and worker five pairs of spiracles, but in the drone, on account of the additional segment, there are six pairs. The total number of spiracles is thus fourteen for queen and worker, and sixteen for the drone. The posterior region of the abdomen bears. Fig. 97.—Head and mouth parts of Bee. (After Cheshire.) «, .'Vnlenna; w, mandible; g, gum flap or epipharyn.\ ; , maxillary palp \ fg and inx, and lacinia ; /./, labial palp ; /, ligula ; b, bouton at 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 Thomson, J. Arthur (John Arthur), 1861-1933;
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
