Megachilidae

Balzan, Mario V., Rasmont, Pierre, Kuhlmann, Michael, Dathe, Holger, Pauly, Alain, Patiny, Sébastien, Terzo, Michael & Michez, Denis, 2016, The bees (Hymenoptera: Apoidea) of the Maltese Islands, Zootaxa 4162 (2), pp. 225-244 : 238

Megachilidae

Osmia (Osmia) tricornis (Latreille 1811)

Previous Reports: Alfken (1929)

Distribution: West Mediterranean Basin, Corsica, and Sardinia.

Osmia tricornis has often been confounded with closely related O. kohlii , which occurs in Malta and Sicily. However, these two species show an allopatric distribution ( Müller, 2015).

Megachile argentata (Fabricius, 1793)

Previous Reports: Valletta (1971)

Distribution: Algeria, Hungary

The species M. argentata has often been confounded with Megachile leachella (Curtis, 1828) ( Schwarz and Gusenleitner 2011) , but the latter has not been recorded from the Maltese Islands. M. leachella is present in Continental Europe and North Africa.