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Identification key to the Notodontidae occurring in the Dakotas
The Notodontidae, as a member of the Superfamily Noctuoidea are characterized by having a metathoracic tympanum (1) and are the only North American family in this group possessing trifid forewing venation (2). In most species (43 of 44 covered here) veins Sc+R and Rs run parallel above the discal cell or slightly convergent (3). In only a single species of Notodontidae do these veins converge and so form a basal areole as found in other quadrifid moth families (Noctuidae, Lasiocampidae, Drepanidae: Drepaninae) and in other families of trifid Lepidoptera (Geometridae, Bombycidae, Drepanidae: Thyatirinae).
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Last updated: 04/14/09 Good web citizens cite their sources.
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