Bombus campestris (Panzer, 1801)

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 : 68

Bombus campestris (Panzer, 1801)

Eurosiberian species, mostly spread across mountains up to the Arctic Circle. In the Iberian Peninsula, it was found in the highlands of the northern half until 1700 m, mainly in meadows and open areas of beech, oak, fir and pine trees on species of Fabaceae , Asteraceae , Boraginaceae , Rosaceae and Scrophulariaceae ( Ornosa & Ortiz-Sánchez 2004) . It is a social parasite mostly of Thoracobombus species: B. pascuorum , B. humilis , B. ruderarius , B. sylvarum and B. muscorum . Recently we found an inner record ( Spain: Madrid: Pto. Fuenfría, 11-VIII-2015, 1 male, C. Ornosa leg., UCME), at 1797 m, on Rubus ulmifolius Schott.

It was assessed as Least Concern in the IUCN Red List of European Bees (Rasmont et al. 2015), but these authors estimated that B. campestris would suffer considerably from climatic warming due to its parasitic behaviour. It has not been found in present samplings in the Pyrenees ( Table 3 ).