by Cristian Solari
0 
Eucera caspica (+) Pollination (+) Viola odorata
Observation
From Carlos.M.Herrera TW @cmhmaliani in Spain: Nectar-containing spurs of Viola odorata point upwards so to reach the nectar, this female Eucera caspica have to rotate upside down for their mouthparts to align with the spur's axis.
Check this link for more information.
