Minnesota State Records for Osmia georgica, Megachile inimica, and Megachile frugalis (Hymenoptera, Megachilidae), Including a New Nest Description for Megachile frugalis Compared with Other Species in the Subgenus Sayapis

In this note, we report the first Minnesota state records of Osmia (Helicosmia) georgica Cresson 1878,Megachile (Sayapis) inimica 1872, and Megachile frugalis which were collected in 2018. We also provide description nest structure M. frugalis. All three species typically have more southern distributions. The shows similar to other subgenus Sayapis Titus, such as pugnata, particularly that longitudinal cell walls lack a lining leaf pieces, partitions are made from layer pieces followed by masticated vegetation soil particles.