S. Mahunka szerk.: Folia Entomologica Hungarica 55. (Budapest, 1994)

Legs: Hind femur with only 1 dorsal bristle in distal quarter. Posteroventral row of hind femur with medium long and thick bristles. Abdominal tergites dark grey, marginal bristles much shorter than tergites. Male genitalia: epandrium (Fig. 24) semi-spherical with sparse short thick bristles only; cerci (Fig. 24) very large compared to editum with numerous bristles (no thicker bristle apically); editum narrow, somewhat broadened subapically with numerous short pointed setae on apical third of its medial (inner) side; surstylus (Figs 24-25) wide lamelliform and reclinate with a definite basal process, this posterior surstylar process bears 3 medium-long, thïck and pointed setae apically, apical half of surstylus with sparse short spinulae; paramere (Fig. 26) proclinate with an additional ventral process, apex not acute with a moderately long apical bristle; basiphallus bulbous, epiphallus (Fig. 27) small. Female unknown. Holotype male (HNHM): Hungary, Oszlár, Tisza-part[riverside] - sasos, nádas [sedgy, reeds]- 1960.X.23., leg. Tóth S. Key to the identification of the West Palaearctic species of Schroederella Enderlein, 1920 1 (2) Male editum (Figs 1-2) bifid. Hind basitarsus ventrobasally with 1 or 2 stiff long black bristles. Hind femur with 1 dorsal bristle at distal quarter. A rather small species, body length 3.72-5.86 mm (Spain) bifida sp. n. 2(1) Male editum simple or with a small basal process only. Hind basitarsus ventrobasally usually with long stiff pale hairs only (but bristles in iners). 3 (4) Entire thorax or at least humeri and notopleura red or dirty reddish yellow. Hind femur with 3 to 4 dorsal bristles at distal quarter. Female sternites twice as wide as long, 7th tergite well sclerotized (Fig. 21). a. Medial surface of flagellomere reddish yellow on its bigger half. Longitudinal axis of eye/genal width below eye ratio is more than 1.5 (up to 1.9). Male editum (Fig. 19) reclinate, apex narrow, with a definite basal process, which bears several short thornlets; surstylus (Fig. 19) narrow and shorter than in î. brevisetis, with less numerous short thick setae on inner (medial) surface; paramere (Fig. 20) less narrow (widespread, W Palaearctic) iners iners (Meigen) b. Medial surface of flagellomere all blackish or reddish only at its base. Eyes smaller, genae broader, longitudinal axis of eye/genal width below eye ratio less than 1.5. Male editum (Fig. 22) broad and rounded apically, less reclinate with more and thicker thornlets in its inner surface than on that of i. iners, its basal process indistinct, only 6 thornlets instead; surstylus (Fig. 22) longer and broader with much more numerous and somewhat longer setae on inner surface; paramere (Fig. 23) rather thin (Mongolia) [iners brevisetis (Czerny)]