Dichogaster (Diplothecodrilus) toroensis Cognetti 1907

Csuzdi, Csaba, 2008, Earthworms from the Kivu Region, D. R. Congo with description of two new Dichogaster Beddard, 1888 (Oligochaeta: Acanthodrilidae, Ocnerodrilidae), Journal of Natural History 42 (33 - 34), pp. 2227-2241 : 2236-2237

Dichogaster (Diplothecodrilus) toroensis Cognetti 1907

( Figure 6A–D ) Dichogaster toroensis Cognetti 1907, p. 3 , Cognetti 1909, p. 23, Csuzdi and Zicsi 1994, p. 52. Dichogaster (Diplothecodrilus) toroensis: Csuzdi 1995, p. 114 , Csuzdi 1996, p. 357.

Material examined

Dichogaster toroensis Syntypes. OL 93, Fort Portal , Toro, 1532 m .

New records. HNHM AF/3573, one exemplar, BMNH 1997.1630 , one exemplar. D . R. Congo, Kivu Region , Bugabo, leg. Gasana N’Doli, 25 July 1973 .

Diagnosis

Length 20–26 mm, D. 1–1.5 mm, no. of segments 63–110. Pigmentation grey. First dorsal pore in 5/6. Clitellum 13–20. ♀ 14 paired between setae a–a. Prostatic pores 17, 19, genital field oblong. Spermathecal pores 7/8, 8/9, ampoule of the spermatheca irregular pear-shaped with smaller distal part bearing a roundish diverticulum. The duct is slightly convoluted and somewhat longer than the ampoule. Gizzard in 5/6, last pair of hearts in 12. Calciferous glands in 15–17 of equal size. Excretory system meroic with four meronephridia per side. Penial seta L. 0.8 mm, D. 0.008 mm, tip rounded, ornamentation serrated teeth.

Figures

Figure 6. Dichogaster (Dt.) toroensis. (A) Ventral part of the clitellar region; (B) penial seta; (C) ectal third of the penial seta; (D) spermatheca. Pr, prostate pores; n, female pores.