This enormous bumblebee was slowly awaking in the sun on the first real spring day this year, a female from the Buff-tailed bumblebee group and I think a queen.
The bumblebee carried a number of mites that had dug in in her neck on both sides of her body.
The appearance of the Buff-tailed bumblebee group queens in the beginning early in the year indicates the start of the new season.
References1 GOKCEZADE, J. F., et al. Feldbestimmungsschlüssel für die Hummeln Österreichs, Deutschlands und der Schweiz (Hymenoptera, Apidae).