Felt a sting like a horsefly but underwater. Ignored it until I saw this...
https://lvinvertebrados.pt/especies-protegidas/hirudo-medicinalis/
https://www.researchgate.net/figure/Three-species-of-the-genus-Hirudo-A-H-verbana-B-H-medicinalis-C-H-orientalis_fig1_26790227
Under dead branch in water
Nom proposé par l'IA.
Dans la rivière du jardin alpin du Parc floral.