<i>Gramastacus lacus</i> (1 of 2) (IMAGE) Pensoft Publishers Caption This is the eastern swamp crayfish Gramastacus lacus from the Lake Macquarie catchment. Credit Rob McCormack Usage Restrictions CC-BY 4.0 License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.