Cavaticovelia is a monotypic genus of insects in the order Hemiptera, the true bugs, containing the single species Cavaticovelia aaa. This bug, known commonly as the aaa water treader, lava tube crawler, or lava tube water treader, is a water treader native to Hawaii.

The insect's specific name, aaa, is derived from ʻaʻaʻā, the Hawaiian word for "lava tube".

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