L. Forró szerk.: Miscellanea Zoologica Hungarica 13. 2000 (Budapest, 2000)

Csuzdi, Cs.: The first recorded earthworms from Burkina Faso with description of a new species (Oligochaeta: Eudrilidae, Acanthodrilidae)

External characters. Holotype. Length 85 mm, diameter 4 mm, 171 segments. Paratypes 70-90 mm in length, 3.5-4 mm in diameter, 176-216 segments. Colour dark violet above, paler below. Prostomium prolobous, dorsal pores absent. Setal arrangement eudriline, on segment 22, aa:ab:bc:cd:dd = 3.7:2.7:3.3:1:1:17 Clitellum annular, on segments 15-17. Male pore single, median ventral in intersegmental furrow 17/18 (Fig. 2). Porophores absent. Female pores on small papillae, paired on the posterior margin of segment 14, in line with the nephridiopores. Spermathecal pore single, on a mid-ventral papilla on the frontal edge of segment 13. Nephridiopores between setal lines c and d, near anterior margins of the segments. Fig. 2. Legonea derouardi sp. nov. Ventral view of the clitellar segments, pr. p = prostata pore; st.p = spermathecal pore Internal characters. Septa 5/6 muscular, 6/7-11/12 thickened, 13/14 missing. Oesophageal gizzard in 5, intestinal gizzards in 19-24, 6 pairs. Typhlosole is very small, almost lacking. Unpaired oesophageal glands are present in 9, 10, ILA pair of calciferous glands located in the fused cavity of segments 13 and 14. Hearts in segments 6-11. Holonephridial. One pair of nephridia in each segment, nephridial sac biarmous (Fig. 3). Holoandric. Testes paired in 10 and 11, each enclosed in an ectally convoluted spermreservoir (Fig. 4). Seminal vesicles paired in 11, 12. Spermathecal system complex. A ringshaped coelomic sac (Verbindungsslauch) with a supra-intestinal diverticulum (Fig. 5) encircles the oesophagus in the cavity of segments 13-14, and communicates ventro-medially with the muscular spermathecal atrium. The ovaries are paired and situated laterally to the spermathecal atrium in 13. Each ovarium is enclosed in an ovarian vesicle from which