1 P- 4 stout, longer than high (Fig. 5), excretory pore plate rhomboidal in shape (Fig. 3), III-Leg- 3 with two heavy setae (Fig. 8), III-Leg- 5 with acanthoid seta........................................................ L. insignis Neuman, 1880
- P- 4 more slender, shorter than high, excretory pore oval or nearly circular in shape, III-Leg- 3 with one single heavy seta, III- Leg- 5 without acanthoid seta............................................................................ 2
2 Urstigma small (D 9–11 µm), I–III-Leg– 5 long (78–90, 89 – 106, 102–128 µm, respectively), P– 4 with three subequal setae (two dorsal and one medial, Fig. 32)..................................................... L. saxonica Thor, 1911
- Urstigma relatively large (D 14–16 µm), I–III-Leg– 5 comparatively short (64–74, 74 – 80, 85–90 µm, respectively), P– 4 with three unequal setae (short dorsal and medial, and relatively long ventral, Fig. 18).................. L. porosa Thor, 1900