Note: Key from Theischinger & Endersby 2009 |
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1. Lateral margins of prementum straight OR almost so; segment 1 of antennae shorter than segment 2; apices of femora without heavy spines; caudal gills apically rounded OR truncate
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-Lateral margins of prementum strongly concave; segment 1 of antennae longer than segments 2, 3 and 4 together; apices of femora with 2 heavy spines; caudal gills apically bluntly pointed
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