Eisenia oreophila, Szederjesi, Tímea & Csuzdi, Csaba, 2012

Szederjesi, Tímea & Csuzdi, Csaba, 2012, New and little known earthworm species from Greece (Oligochaeta: Lumbricidae, Acanthodrilidae), Zootaxa 3304, pp. 25-42 : 36-37

Eisenia oreophila sp. nov.

Holotype. HNHM /15911 adult. No. 10, Ioannina County, Lakmos Mts., open brook and rocky beech forest at the pass of the Chaliki-Anilio road, 1610m, N39°43.008’ E21°11.602’, leg. J Kontschán, D. Murányi, T. Szederjesi, Zs. Ujvári, 0 9.0 5.2011.

Paratypes. HNHM /15912 one adult ex., locality and date same as that of the holotype., HNHM /15913 one adult ex., No. 27, Evrytania County, Timfristos Mts., alpine grassland around the ski course, 2km W of Mt. Timfristos, 1865m, N38°56.516’ E21°48.412’, leg. J. Kontschán, D. Murányi, T. Szederjesi, Zs. Ujvári, 0 7.0 5.2011.

Derivatio nominis. From Greek (?ρεɩος = highlander), refers to the mountain habitat of the new species.

Diagnosis. Length 61–113 mm, diameter 4–6 mm, setae closely paired. Pigmentation lacking. First dorsal pore 5/6. Clitellum on 25–34, tubercles 29–32. Male pore on 15, large. Nephridial pores irregularly alternate between b and above d. Two pairs of vesicles in 11, 12; spermathecae 9/10–10/ 11 in M. Calciferous glands without welldeveloped diverticula in 10–12. Hearts in segments 6–11, nephridial bladders sausage-shaped.

External characters. Holotype 100 mm long and 5 mm wide. Number of segments 159. Paratypes 61–113 mm long and 4–6 mm wide. Number of segments 104–111. Colour pale, pigmentation lacking. Prostomium epilobous ½, closed. First dorsal pore at intersegmental furrow 5/6. Setae closely paired. Setal arrangement behind clitellum: aa: ab: bc: cd: dd = 16:1.5:8:1:23. Male pores on segment 15, surrounded by a glandular crescent. Nephridial pores irregularly alternate between setal line b -d. Clitellum on segments 25–34. Tubercula pubertatis on segments 29–32 ( Fig. 3 ). Genital papillae on segments 25, 26, 28–34 ab.

Internal characters. Septa 6/7–8/9 slightly thickened. Testes and funnels paired in segments 10–11, covered with perioesophageal testis sac. Seminal vesicles in 11, 12. Spermathecae in 9/10, 10/11 with external openings near the mid-dorsal line. Calciferous glands in segments 10–12 without distinct diverticula. Paired hearts appear in segments 6–11, with a pair of small extraoesophageal vessel in 12. Nephridial bladders simple, sausage-shaped. Crop in segments 15–16, and gizzard in segments 17–18. Typhosolis biramous, longitudinal musculature fasciculate.

Remarks. The new species belongs to the E. grandis species group as defined by Zicsi & Csuzdi (1986), which is represented by two species in Greece, E. ebneri and E. kattoulasi . E. oreophila sp. nov. differs from both species by its longer clitellum and the position of the tubercula pubertatis.

Zicsi & Michalis (1981) examined two syntypes of Eophila ariadne Michaelsen, 1928 described from Greece. On the basis of presence of nephridial bladders, they removed ariadne from synonymy with Helodrilus partiarchalis ( Rosa, 1893) and placed it into the genus Allolobophora . However the simple sausage-shaped nephridial bladders, lack of detached calciferous diverticula and fasciculate musculature clearly place it in the E. grandis group.

Clitellum Tubercula pubertatis Seminal vesicles Spermathecae E. ebneri ( Michaelsen, 1914) 27–33 30–½ 32 11, 12 9/10, 10/11 M E. kattoulasi Zicsi & Michalis, 1981 25– 33 30–31 11, 12 9/10, 10/11 M E. ariadne ( Michaelsen, 1928) 23–33 ½ 29–31 11, 12 9/10, 10/11 d E. storkani Černosvitov, 1934 26–33 30–¼ 32 9–12 9 /10, 10/11 M E. oreophila sp. nov. 25–34 29–32 11, 12 9/10, 10/11 M

Figures

FIGURE 3. Eisenia oreophila sp. nov. Ventro-lateral view of the clitellar region. cl = clitellum, mp = male pore, scale bar = 10 mm.