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Some Anthracinae, including this group, require a revision with designation of neotypes before names can be definitively assigned. Say's types are lost and even where species limits are known, it can be unclear which species he had. A recent key to Villa of eastern Canada may help: http://cjai.biolo...villa.html. It says that V. lateralis has yellow bands on the abdomen, not white. V. arenicola has mostly white bands. The next reference is Painter (1926), https://kb.osu.ed...04_205.pdf. He considered arenicola as a variety.