| Main Ref. | Gomes-Ferreira, A., F. Ribeiro, L. Moreira da Costa, I.G. Cowx and M.J. Collares-Pereira, 2005 | ||
| Predator stage | juv./adults | ||
| Food I | zoobenthos | ||
| Food II | insects | ||
| Food III | insects | ||
| Food group | Ephemeroptera | Prey Stage/Part | nymphs |
| Food name | mayflies | ||
| Commonness | 37.14 | very common (21-50%) | |
| Country | Portugal | ||
| Remark | Locality: Múrtega River, Guadiana River basin, February 1999 - January 2001. Food item of diploid males. | ||