Home Insects Insect Giant Cockroach – Morphna dotata InsectsInsect Giant Cockroach – Morphna dotata February 14, 2021 646 0 Singapore Geographic, Singapore Nature, Singapore Nature Photography Morphna dotata is a cockroach species first described by Walker, F. 1869. Morphna dotata is part of the genus Morphna and the family of giant cockroaches Spotted at Bukit Timah Nature Reserve – Feb 2021 It’s quite big size, about 5cm.