Atrichopogon (Meloehelea) oedemerarum Storå, 1939: 16 . (Type locality: N. Lojo, Kaikuma, Finland).

Diagnosis: Male adult: only extant species of Atrichopogon (Meloehelea) in the Holarctic and Neotropical regions, with an aedeagus bearing a pointed, triangular caudomedian process.

Description: Male adult: Body brown, scutellum brown, legs (Fig. 1) lighter brown, empodia present. Head width/ mouthpart length 1.92, antennal ratio 0.9. Ommatidia without interfacetal pubescence (Fig. 2). Antenna dark brown with 13 separate flagellomeres, proportions as in Fig. 2, apex of flagellomere 13 with slender nipple. Maxillary palpus (Fig. 2) brown, third segment slender and elongated with small sensory pit at midportion, palpal ratio 3.4. Wing (Fig. 3) length 1.5 mm, costal ratio 0.66, wing membrane with macrotrichia in distal portion of cell r3 and dorsoapical portion of cell m1. Genitalia as in Fig. 4. Of moderate size, segment 9 about equal in width to segment 8, tergit 9 short, not extending to apex of gonocoxite; posterior margin rounded. Sternit 9 with posterior margin slightly concave, with scattered setae. Gonocoxite without medial lobe. Gonostylus tapering from base, gently curved, apex pointed. Aedeagal-parameral complex unique within subgenus, with well shaped triangular, distinctly pointed apicomedian process, gonocoxite length/ width 2.3. Cercus short, lobe-like and ventral to tergite 9.

Distribution and bionomics: Atrichopogon (M.) oedemerarum is broadly distributed across 12 countries of Europe (Andorra, Great Britain, Czech Republic, Denmark, Estonia, Finland, Germany, Hungary, Lithuania, Poland, Slovakia and Switzerland) (Szadziewski & Borkent 2004) and North America (New Brunswick, Ontario, Virginia, West Virginia) (Wirth 1980). This species is likely restricted to higher forest zones in the Neotropical Region that contain moist, cool habitats that are similar those in the Holarctic Region.