How To Use Genus simulium In A Sentence

• If the insects of the genus Simulium abound in the Cassiquiare, which has white waters, the culices or zancudos are so much the more rare; you scarcely find any there; while on the rivers of black waters, in the Atabapo and the Rio, there are generally some zancudos and no mosquitos. Travels to the Equinoctial Regions of America
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