Figure 1: C. cuspidata in oil view                Figure 2: C. cuspidata on 40 zoom level

Name: Craticula cuspidata

Family: Stauroneidaceae

Collection Date: 7 September 2016

Habitat: Freshwater

Location: Solon pond

Description: Rhombic lanceolate, widest at center and tapering to the apices. Striae are parallel and equidistant.

Key Used: 

https://westerndiatoms.colorado.edu/taxa

Keying steps: 

1. symmetrical biraphid - valves with bilateral symmetry

2. Craticulata - Strae parallel...

3. Craticulata cuspidata - valves with narrow apices