01 n. A genus of dipterous insects whose young (called rat-tailed larvæ) are remarkable for their long tapering tail, which spiracles at the tip,…
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A genus of dipterous insects whose young (called rat-tailed larvæ) are remarkable for their long tapering tail, which spiracles at the tip, and for their ability to live in very impure and salt waters; -- also called drone fly.(Zoöl.) Also: drone fly