Ornosa, C., Torres, F. & Rúa, P.D.L. (2017) Updated list of bumblebees (Hymenoptera: Apidae) from the Spanish Pyrenees with notes on their decline and conservation status .
Zootaxa
, 4237 (1), 41–77.
https://doi.org/10.11646/zootaxa.4237.1.3