Key to Zarenkolambrus Species

1. Rostrum long, not deflexed, tip with a varying number of short teeth on lateral margins. Lateral teeth long, carapace width much greater than carapace length ........................................................................................... Z. epibranchialis

- Rostrum short, deflexed, tip without teeth on lateral margins. Lateral teeth short, carapace width around 1.2 x carapace width .................................................................................................................................................... Z. minutus