Two tiny streams in Thimphu, with two new gastropods (Caenogastropoda, Rissooidea: Pomatiopsidae and Amnicolidae)

In a spring area near Thimphu two species of micro-gastropods were discovered, which are described as new to science here. The endemic Tricula tashiae spec. nov. is next to the more widespread T. montana Benson, 1843, and is the second Tricula species known now from Bhutan. Erhaia benjii spec. nov. is described as the fifth endemic Erhaia species for the country.