Ptychoptera hugoi, Tjeder, 1968

Wiberg-Larsen, Peter, Hansen, Søren Birkholm, Rinne, Aki, Viitanen, Esko & Krogh, Paul Henning, 2021, Key to Ptychopteridae (Diptera) larvae of Northern Europe, with notes on distribution and biology, Zootaxa 5039 (2), pp. 179-200 : 193

Ptychoptera hugoi

This species has a markedly northern distribution and is recorded only in Norway, Finland and Sweden north of 66° latitude ( Fig. 6B ). According to Zwick (2020), it is further distributed in the Eastern Palearctic and the Nearctic region.

The habitat of larvae is still unknown. Adults have been collected in a small Carex pool on a mountain slope at 800 m a.s.l. ( Andersson 1997), the lake-like part of a sandy riverbed with Carex growth, and in a moderately fastflowing, 10-m wide river with a stony bed and banks with Salix and Alnus ( Andersen et al. 2013) . An alpine and wet habitat is suggested by Salmela (2008).

Adults are primarily found in July, with only a couple of records from late June.

Figures

FIGURE 6. Distribution of Ptychoptera species within the geographical area defined as Northern Europe, delineated by grey line. A. Ptychoptera contaminata; B. P. hugoi; C. P. minuta; D. P. scutellaris. Blue dots show specific records, blue raster indicates confirmed but unspecified presence and red raster indicates likely presence.