Dendrobaena szalokii, Szederjesi, Tímea, Pavlíček, Tomás, Coşkun, Yüksel & Csuzdi, Csaba, 2014

Szederjesi, Tímea, Pavlíček, Tomás, Coşkun, Yüksel & Csuzdi, Csaba, 2014, New earthworm records from Turkey, with description of three new species (Oligochaeta: Lumbricidae), Zootaxa 3764 (5), pp. 555-570 : 561-562

Dendrobaena szalokii sp. nov.

( Figure 1 C,D)

Holotype. HNHM /11135, Erzurum, Nenehatun, 13.04.1990, leg. D. Szalóki.

Paratypes. HNHM /11132 2 ex, Adıyaman, Akpınar, 0 8.04.1990, leg. D. Szalóki.

Derivatio nominis. The species is named in honour of the collector Dezső Szalóki (Budapest, Hungary).

Diagnosis. Length 90–123 mm, diameter 3–4 mm, setae distant. Colour pale. First dorsal pore in 5/6. Clitellum on 24–1/2 34, tubercles on 1/2 29 –1/2 32. Male pore on 15, surrounded by glandular crescents. Nephridial pores irregularly alternate between b and above d. Three pairs of vesicles in 9,11,12; spermathecae two pairs in 9/10, 10/ 11, open near the mid-dorsal line. Calciferous glands in 1/2 10 –12. Hearts in segments 7–11, nephridial bladders simple, sausage-shaped.

External characters. Holotype 123 mm long and 4 mm wide. Number of segments 249. Paratypes 90–97 mm long and 3–3.5 mm wide. Number of segments 222–232, from 7 to 23 biannulate. Colour pale. Prostomium epilobous, 1/3 closed. First dorsal pore at intersegmental furrow 5/6. Setae distant. Setal arrangement behind clitellum: aa: ab: bc: cd: dd = 2.4:1.3:1.4:1:3.5. Male pores on segment 15, surrounded by glandular crescents, protruding into 16 as well. Nephridial pores irregularly alternate between setal line b–d. Clitellum on 24–1/2 34. Tubercula pubertatis on 1/2 29 –1/2 32. Glandular tumescence on 10, 11, 27–31 a.

Internal characters. Septa 6/7–9/10 strongly thickened, 10/11–14/15 thickened. Testes and funnels paired in 10–11, covered with perioesophageal testis sac. Three pairs of seminal vesicles in 9,11, and 12. Spermathecae two pairs in 9/10, 10/11 with external openings near the mid-dorsal line. Calciferous glands in 1/2 10 –12. Paired hearts appear in 7–11, with a pair of small extraoesophageal vessels in 12. Nephridial bladders simple, sausage-shaped. Crop in 15–16, and gizzard in 17–18. Typhlosolis biramous. Longitudinal musculature is of pinnate type.

Remarks. The new species, according to the position of the tubercles and the clitellum, shows affinities with the species/subspecies in the widely distributed D. veneta group. It especially resembles D. kervillei Michaelsen, 1910 which also lacks the red pigmentation and has tubercles stretching on 30–1/2 32. However, D. szalokii sp. nov. differs from all members of the veneta group by its pinnate musculature (fasciculate in the veneta group) and tubercles occupying 1/2 29 –1/2 32. Because the pinnate musculature is considered to be an apomorphic character state ( Omodeo 1956b), the similarity of D. szalokii with the D. veneta group can only be superficial. However, as this character is highly homoplasious ( Pop et al. 2007) D. szalokii can also be a derived member of the D. veneta group. This is supported by the calciferous glands as well, which are in the position, typical for the veneta group.

The main characters of the Dendrobaena species reported from the region are summarized in Table 1 to help with the identification. Apart from the Turkish species those described from Israel (Csuzdi & Pavlíček 1999; Csuzdi et al. 1999) and Jordan (Csuzdi & Pavlíček 2005; Szederjesi et al. 2013) are also included, because larger parts of the Levantine fauna occur also in the Hatay Province, Southern Turkey (Csuzdi et al. 2007).

Figures

FIGURE 1. Dendrobaena cevdeti sp. nov. (A – B) and Dendrobaena szalokii sp. nov. (C-D). A. Setal arrangement of D. cevdeti. B. Clitellar region of D. cevdeti. C. Setal arrangement of D. szalokii. D. Clitellar region of D. szalokii. Mp = Male pore, Tb = tubercle. Scale bar = 1 mm.