Tortopsis sarae (Domínguez) Dominguez, 2010

Molineri, Carlos, 2010, A cladistic revision of Tor top us Needham & Murphy with description of the new genus Tortopsis (Ephemeroptera: Polymitarcyidae), Zootaxa 2481, pp. 1-36 : 29-31

Tortopsis sarae (Domínguez) New combination

Tortopus sarae Domínguez 1985: 71 ; Molineri 2008: 13.

Material ( IML): holotype and 16 paratypes female imagos from Argentina: Jujuy, 10 km N Ledesma, río Zora, 14-XII-1983, E. Domínguez col. Other material reported in Molineri (2008). New localities: 10 male and 10 female imagos from Argentina: Tucumán, Acheral, río Aranillas, 366 m, S 27º 6' 59.9" - W 65º 27' 43.9", 29- XII-2007, C. Molineri & J. Giordano cols.; 1 reared male adult and 15 nymphs from Argentina: Tucumán, ca. Manuela Pedraza, río Balderrama, 335 m, S 27º 12' 0.6" - W 65º 21' 30.3", 14-XI-2009, C. Molineri col.

Female imago. Head shaded black between ocelli, occiput without marks. Pronotum with sublateral gray lines not completely separated from the rest of the pigmented area. Furcasternal plates basally contiguous ( Fig. 45 ). Wings: veins C, Sc y R1 (and membrane in between) shaded with brownish gray, rest of wing whitish. Vein R3 and short intercalary before it absent in fore wings but some females present a weak vein in zig-zag formed by coalescence of cross veins, with a length of 3 cells or less. Abdominal terga widely pigmented except on sublateral dashes on terga II–VII, black thin median line present on terga I–VIII, tergum IX with a thin pale median line. Sternum VIII with C-shaped sockets ( Figs. 46–47 ).

Egg. Suboval, no attachment structures. Length, 355–375 µm; width, 290–305 µm. The chorionic cover is smooth.

Discussion and diagnosis. Tortopsis sarae is currently known from all the stages ( Domínguez 1985, Molineri 2008). A short description of the female imago is given to complete its characterization. This species can be recognized by: 1) fore wing length 13.0–13.5 (male), 17.5–18.0 (female); 2) wings whitish translucent except C and Sc areas brownish; 3) parastyli moderately curved; 4) penes cylindrical; 5) female parastylus receptor C-shaped ( Figs. 46–47 ); 6) head shaded black behind median ocellus, occiput very pale, at most with a small grayish netting near hind margin; 7) female pronotum shaded as in Tortopsis obscuripennis .

Figures

FIGURES 44 – 52. Tortopsis, female imago. 44, T. obscuripennis, fore wing. T. sarae: 45, mesofurcasternum; 46, abdominal sternum VIII, v. v.; 47, same, l. v. T. obscuripennis: 48, abdominal sternum VIII, l. v. T. primus: 49, abdominal sternum VIII, l. v. T. puella: 50, abdominal sternum VIII, v. v.; 51 – 52, same, l. v.