| 主要参考文献 | Maitland, P.S. and R.N. Campbell, 1992 | ||
| 掠食阶段 | juv./adults | ||
| 食物一 | plants | ||
| 食物二 | other plants | ||
| 食物三 | benthic algae/weeds | ||
| 食物群 | unidentified | 捕食阶段/部份 | n.a./others |
| 食物名称 | unidentified | ||
| 普通 | very common (21-50%) | ||
| 国家 | UK | ||
| 附注 | Locality: River Cam, England and Altguhur Burn, Scotland | ||