Bombus maxillosus Klug, 1817

Ornosa, Concepción, Torres, Félix & Rúa, Pilar De La, 2017, Updated list of bumblebees (Hymenoptera: Apidae) from the Spanish Pyrenees with notes on their decline and conservation status, Zootaxa 4237 (1), pp. 41-77 : 67

Bombus maxillosus Klug, 1817

Western Palearctic species, spread by Europe, Minor Asia and the North of Africa. Lecocq et al. (2011) and Rasmont et al. (2015) considerer it as a B. barbutellus subspecies. It is distributed on the Balearic Islands and all over the Iberian territory, except in lower levels of the southern third due to certain orophilus tendency. Its elevational distribution ranges from 870 to 3000 m, and it presents preference for Asteraceae and Fabaceae plant species ( Castro 1988, Ornosa & Ortiz- Sánchez 2004, Vargas et al. 2013). B. maxillosus is social parasite on B. ruderatus .

It has not been found in the Pyrenees , where it was locally abundant in the past ( Table 3 ), however, there are two recent records in the southern Iberian Peninsula , in Sierra Nevada , on Cirsium vulgare (Savi) Ten. (Almería: Puerto de la Ragua, at 2270 m, 24-VII-2009, 1 male, P. Vargas leg., UCME; Granada: Veleta, 24-VII-2012, at 2800 m, 1 male, C. Ornosa leg., UCME).