1. Eighth abdominal segment with an elogate dorsal respiratory siphon. . . . .Mochlonyx sp. Eighth abdominal segment with short stout respiratory siphon absent . . . .Chaoborus sp. [Home], [Back to Diptera Nymph Families]
1. Eighth abdominal segment with an elogate dorsal respiratory siphon. . . . .Mochlonyx sp.
Eighth abdominal segment with short stout respiratory siphon absent . . . .Chaoborus sp.
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Key to Genera of Chaoboridae Nymphs