H. G. Hall and L. Avila, “Megachile sculpturalis, the Giant Resin Bee, overcomes the blossom structure of Sunn Hemp (Crotalaria juncea) that impedes pollination”, J. Melittol., no. 65, pp. 1–11, Dec. 2016, doi: 10.17161/jom.v0i65.5887.