Lepidura improcera Dasch, 1974. 17, 31, 476 (Original description, keyed, comparative illustration of metasoma); Lanfranco, 1974. 203 (Listed); Lanfranco, 1980. 79 (Listed).
Diagnosis: Body light green. Supra-antennal and ocellar areas, dorsal half of gena, propodeum, mesothorax and metasomal segments 6–9 dark brown. Antenna and all tarsi reddish brown. This species is easily identified by having 43 flagellomeres. Propodeum with areola delimited by median longitudinal carina and anterior and posterior transverse carina (Fig. 3).
Type material: Holotype female (USNM, not examined).
Type locality: CHILE: Región de Magallanes y de La Antártica Chilena: El Salto.
Distribution (Fig. 6): * ARGENTINA: Neuquén: San Martín de Los Andes. CHILE: Región de Magallanes y de La Antártica Chilena: El Salto (Dasch, 1974; Lanfranco, 1974).
Material Examined: 1 female: RA Neuquen, S. Martin Andes, Pucará, Jan’70, Schajovskoy Coll (FSCA).