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)

Millsonia inermis (Michaelsen, 1892) Benhamia inermis Michaelsen, 1892: 209. Dichogaster inermis: Michaelsen, 1900: 366; Michaelsen, 1912: 28; Michaelsen, 1937: 501. Milllsonia inermis: Omodeo, 1958: 59; Sims, 1965: 299; Sims, 1986: 293. Locality: AF/3805 4 Ex. Burkina Faso, Sobaka, Koukalanasse, 200 km south from the capital Ouagadougou. Leg. L. Derouard, 16.X.1995. Considering that this is the most variable species of the genus Millsonia a short description is given here. External characters. Length 120-170 mm, diameter 5-7 mm. 310-321 segments, anteriorly triannulate. First dorsal pore 11/12. Clitellum saddle shaped, on segments 1/2 12-19. Female pores on segment 14 paired, between ab, located somewhat anteriorly to the setal ring. Prostate pores paired, open in the edges of a quadrate-shaped invagination (male field) on 17-19. Spermathecal pores paired in furrows 7/8-8/9, somewhat lateral to the setal line b. Paired papillae present on the posterior part of segments 9, 10, 11, 15, 16. Unpaired glandular pads mid-ventral, usually on segments 24-38. Internal characters. Septa 5/6-9/10 greatly thickened, 10/11-11/12 less so. Gizzards in 5. and 6. segments, strongly muscularized and of equal size. Last hearts in 13. Calciferous glands in 15-17., the first pair is small. Intestinal caeca 14 pairs, in segments 27-40. Meronephridia 10 pairs, with a pair of caudal megameronephridia. Racemose vesiculae seminalis present in segments 11-12. Prostates paired in 17 and 19, highly convoluted. Penial setae absent. Spermathecae in segment 8 and 9; the duct short with numerous sperm-chambers in the wall. Ampulla elongated sac-shaped. Eudrilidae Claus, 1880 Legonea Clausen, 1963 Legonea Clausen, 1963: 301; Sims, 1964: 591. Legonea rapta Sims, 1964 Legonea rapta Sims, 1964: 601. Locality: AF/3803 2 Ex. Burkina Faso, Sobaka, Koukalanasse, 200 km south from the capital Ouagadougou. Leg. L. Derouard, 16.X.1995. External characters. Length 110 mm, diameter 5 mm, 230 segments. Colour reddishbrown, on dorsal side intensively expressed. Dorsal pores absent. Clitellum annular, on 1/2 14, 15-17. segments. Male pore single median ventral in intersegmental furrow 17/18 with everted horn-shaped copulatory appendages (Fig. 1). 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 in intersegmental furrow 12/13. Nephridiopores between setal lines c-d.