Pagastiella Brundin (Fig. 87)
Small pale head capsule with slightly darker occipital margin. Antenna 5-segmented. Premandible trifid, first and third longer and pointy, middle tooth shorter and broader. Mandible very slender with 2 dorsal and 5 inner teeth; all teeth pale. Mentum arched, weakly pigmented with four median teeth and 6 pairs of lateral teeth; outer pair of median teeth very small, first lateral tooth broad and the other laterals decreasing in size. Ventromental plates broad and largely arched, anterior margin finely crenulated.
Remarks: Pagastiella differs from Nilothauma by having unusual position of setae submenti on the ventromental plates (Fig. 87) and very small outer pair of median teeth, while in Nilothauma the central pair of median teeth is narrower.
The only Palaearctic species, P. orophila (Edwards, 1929), is also known from the Tatra Mts. lakes. Subfossil remains were found rarely and in low abundances in lakes of the forest zone.