Guide to Mastogloia lucayensis
- Valves elliptic
- Apices apiculate
- Valve with large hyaline areas
- Single paraxial row of pores
- Partectae nearly square
Most of the valve face is unornamented. Only the raphe, a longitudinal row of pores along each side of the raphe, and a marginal zone of areolae are present. Valves are elliptic, with apiculate apices and nearly square partecta. Under SEM, striae can be observed to be alveolate.