n.; pl. -tubae [L. cera, wax; tuba, trumpet]
In Hemiptera, the terminal outlet of certain wax glands of scale insects, variable in shape and size.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • bulla — n.; pl. bullae [L. bulla, bubble] 1. A rounded prominance, blister or knob like. 2. (ARTHROPODA: Crustacea) A structure secreted by the head and maxillary glands of certain parasitic female copepods that serves as an anchor for attachment to gill …   Dictionary of invertebrate zoology

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