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...as an obvious and reliable character set for identification of R. calidus and H. planatus in Georgia.
Key words: Georgia, Rhantus, Hoperius, larva, key.
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Turnbow and Smith (1) have Rhantus calidus (Fabricius) and the monotypic southeastern Hoperius planatus Fall as components of the Georgia dytiscid fauna with R. calidus as the only Rhantus species of record. Descriptive information is available for the robust and superficially similar third instars of R. calidus (2) and H. planatus (3). However, because of the inclusion of erroneous and unnecessarily difficult morphological information in Barman's (4) key to mature dytiscid larvae of Georgia, larvae of both species are likely to be identified as H. planatus.
Mature larvae of Nearctic Rhantus have...
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