Face patterns of the Azorean Hylaeus species; males in the top row, females below: a Hylaeus azorae b Hylaeus pictipes c Hylaeus signatus d Hylaeus pictipes e Hylaeus signatus; photos: Esther Ockermüller (Oberösterreichisches Landesmuseum Linz) (a, b, d) and Julie A. Weissmann (c, e); scale bars 0.1 mm.

 
 
  Part of: Weissmann JA, Picanço A, Borges PAV, Schaefer H (2017) Bees of the Azores: an annotated checklist (Apidae, Hymenoptera). ZooKeys 642: 63-95. https://doi.org/10.3897/zookeys.642.10773