Planarians

Figure 1.Geographic distribution of Dugesia superioris (indicated by an asterisk) and Dugesia sp. NMNH 55294 (indicated by black diamond) in the Lake Ohrid region.

Figure 1.Geographic distribution of Dugesia species recorded from Madagascar and adjacent islands. Type locality of Dugesia bifida in the High Tsiribihina hydrographic basin indicated by an asterisk.

Figure 2.Dugesia superioris. Habitus of a living fissiparous specimen.

Figure 2.Dugesia bifida. Habitus of living specimens, A fissiparous individual B ex-fissiparous individual.

Figure 3.Dugesia superioris. Holotype ZMA V.Pl. 7153.1, sagittal reconstruction of the copulatory apparatus (anterior to the left).

Figure 3.Dugesia bifida. Holotype ZMA V.Pl. 7189.1, sagittal reconstructions of the copulatory apparatus (anterior to the right), A male copulatory apparatus B female copulatory apparatus.

Figure 4.Dugesia superioris. Photomicrographs of the copulatory apparatus. A Holotype ZMA V.Pl. 7153.1, sagittal section showing the penis bulb and the penis papilla with the ejaculatory duct B Paratype CGAS Pla 6. 3, transverse section of the penis papilla and the ejaculatory duct surrounded by numerous glands C Paratype CGAS Pla 6. 3, transverse section of the bursal canal.

Figure 4.Dugesia bifida. Schematic horizontal reconstruction of the copulatory apparatus.

Figure 5.Dugesia bifida. Microphotographs of the copulatory apparatus. A Holotype ZMA V.Pl. 7189.1, sagittal section showing the penis bulb (pb) and the penis papilla (pp) with the seminal vesicle (sv) and the ejaculatory duct (ed) B Holotype ZMA V.Pl. 7189.1, sagittal section showing the opening of the right oviducal branch (rob) through the posterior wall of the bursal canal (bc), and the common posterior oviducal extension (cpe) full of sperm (s) C Paratype CGAS Pla 7.1, sagittal section showing the caudal part of the common posterior oviducal extension (cpe) and the ductule (du) communicating with the ventral part of an adjacent vitellarium (v).

Figure 6.Dugesia bifida. A Holotype ZMA V.Pl. 7189.1, microphotograph of the right hyperplasic ovary (o) with the tuba (tu) B Paratype CGAS Pla 7.1, microphotograph of the oviduct (od) with an expansion (ov) C Holotype ZMA V.Pl. 7189.1, microphotograph of mature testes (t) with sperm (s).

Figure 7.Dugesia bifida. A metaphasic plate B karyogram C idiogram.