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 Major Groups | Insecta (insects) | Odonata (dragonflies, damselflies) | Libellulidae

 
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6(3). Lateral spines on abdominal segment 9 substantial, as long as or longer than middorsal length (ML) of segment 9
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Austrothemis  

spines on segment 9 substantial

-Lateral spines on abdominal segment 9 small, not longer than middorsal length (ML) of segment 9

Note: For very small larvae, lateral spines may not be apparent.

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Nannophlebia  

lateral spines on segment 9 small