Two New Species of Stylops (Strepsiptera: Stylopidae) from the United States, with New Host and Distribution Records

Stylops piercei n. sp. and Stylops boharti n. sp. are described based on female specimens associated with their hosts. Both species are hosted by bees in the genus Andrena but are from species in subgenera that have not previously been documented to host strepsipterans in North America. Andrena (Dactylandrena) berberidis is the host of S. piercei n. sp. and Andrena (Scaphandrena) cruciferarum hosts S. boharti. A supplementary description of Stylops cressoni is given based on specimens from Andrena cressoni infaciata, which is the first report of this subspecies of A. cressoni being a strepsipteran host, and this represents a range extension from Maine, USA to Colorado, USA. Range extensions are reported for Stylops bipunctatae now known from Florida and Stylops mandibularis now found in Colorado. A new host record of S. mandibularis from Andrena thaspii is documented.