Length 4.1 mm. The tail valve is large and semicircular with a swollen, central mucro (1) and a concave postmucronal slope (2) that terminates in a low flare. It has rounded trapezoidal apophyses (3).
Valve granules are largest near the entire periphery of the tail valve (4).
Dorset, England. February 2018. Leg. S. Trewhella.