On the classification of North American <i>Chelostoma</i> (Hymenoptera: Megachilidae)

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Michael S. Engel
Terry Griswold


A new subgenus of Chelostoma Latreille is established for the New World group historically placed in Foveosmia Warncke.  These species, placed herein in Neochelostoma Engel & Griswold, new subgenus, are differentiated from the Palearctic Foveosmia and a modified key is provided to the subgenera of Chelostoma.

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