Psychoda cultella sp. n. is described. The new species is characterized by 16-segmented antennae with the three apical flagellomeres globular, very short and partially fused; labellum with five terminal digital projections; aedeagus ca 1.7 times the length of gonostylus; distiphallus bipartite, composed of a ventral phallomere with a roundish blunt tip and a dorsal phallomere with pointed tip; basiphallus in lateral view sub-basally widened. The new species is known from Finland (29 localities) and Norway (6 localities), ranging from the southern boreal ecoregion to the subalpine zone. Psychoda cultella sp. n. is mainly found in Malaise trap samples collected from moist coniferous forests and spruce mires (riparian forests, springs) and rarely fromfens and subalpine heaths. Two male specimens from Norway were reared from fruiting bodies of polypore fungi (either Fomes fomentarius or Piptoporus betulinus).
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