Reference
Bernhard Jacobi, Thomas James Wood (2023): Bud-opening by the Mason bee Hoplitis (Hoplitis) perambigua (Peters, 1975) (Megachilidae, Osmiinae) on Lanzarote, Canary Islands, Spain – Ampulex - Zeitschrift für aculeate Hymenopteren – 14: 22 - 30.