warble fly
Definition of warble fly
: any of various beelike flies (family Oestridae) having larvae that are internal parasites of mammals (such as cattle) ◆Warble flies lay eggs on the hair of their hosts. After hatching, the larvae burrow through the host's skin and migrate through subcutaneous tissue to specific parts of the body (such as the esophagus or spinal canal). The eggs or larvae may also enter the host's body by being ingested as the animal licks its hair. After several weeks the larvae travel to the posterior end of the animal and form cysts or warbles below the skin. Following several molts, the mature larvae emerge through the skin to begin the final stage of development in the ground. — see cattle grub
From the M-W Editors
First Known Use of warble fly
1877
Medical Dictionary
warble fly
Medical Definition of warble fly
: any of various dipteran flies of the genus Hypoderma that are parasites of cattle and other mammals and lay eggs on their feet and legs which are licked off and hatch in the mouth or esophagus and burrow as larvae through the tissues to the skin and beneath it to the back of the animal where they live until ready to pupate and cause warbles
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