Phylogenetic placement of the Pacific Northwest subterranean endemic diving beetle Stygoporus oregonensis Larson & LaBonte (Dytiscidae, Hydroporinae)

Phylogenetic placement of the Pacific Northwest subterranean endemic diving beetle Stygoporus oregonensis Larson & LaBonte (Dytiscidae, Hydroporinae)

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Stygoporus oregonensis Larson & LaBonte is a little-known subterranean diving beetle, which, until recently, had not been collected since the type series was taken from a Neuw Rebel Skinny Eternal Black Jeans shallow well in western Oregon, USA, in 1984.Here we report the discovery of additional specimens collected from a nearby well in the Willamette Valley.Sequence data from four mitochondrial genes, wingless, and histone III place turbo air m3f24-1 Stygoporus Larson & LaBonte in the predominantly Mediterranean subtribe Siettitiina of the Hydroporini.Morphological support for these results is discussed, and details of the collecting circumstances of the new specimens are presented.We argue that the biogeographic patterns of Nearctic Siettitiina highlight the likelihood of additional undiscovered subterranean dytiscids in North America.