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 Major Groups | Insecta (insects) | Hemiptera (bugs) | Notonectidae

Note: Key from Andersen & Weir 2004

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1. Claval commissure of hemelytra with a prominent hair lined pit (P) anteriorly, close to apex of scutellum (S)
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claval commissure with hair lined pit

-Claval commissure of hemelytra without a prominent hair lined pit anteriorly
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claval commissure without hair lined pit