Flatworms

Polyclad worm.

Figure 1.Alaria chengguanensis sp. n., male holotype. A Pedipalp, prolateral view B Pedipalp, ventral view C Embolic division, dorsal view D Pedipalp, retrolateral view. Co conductor; MA median apophysis; PC paracymbium; T tegulum. Scale bars: D as A.

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.Cycloporus papillosus. A–D dorsal views of living animals E sagittal reconstruction of a whole specimen F sagittal reconstruction of the copulatory apparatus. Anterior to the right in E, F.

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.Alaria chengguanensis sp. n., male holotype (C) and female paratype (A–B, D). A Vulva, dorsal view B Epigyne, ventral view C Male, dorsal view D Female, dorsal view. CD copulatory duct; S spermatheca. Scale bars: B as A.

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

Figure 7.Species photographed but not collected. A, B Prostheceraeus roseus C Stylostomum ellipse D, E Oligocladus sanguinolentus F, G Thysanozoon brocchii.

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

Figure 3.Alaria chengguanensis sp. n., SEM of pedipalp of a male paratype. A Prolateral view, detail showing MA B Retrolateral view C Retrolateral view, detail showingembolus D Retrolateral view, detail showing PC. Co conductor E Embolus; MA median apophysis; PC paracymbium; T tegulum.

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

Figure 2.Eurylepta cornuta. A, B dorsal views of living animals C sagittal reconstruction of a whole specimen D sagittal reconstruction of the copulatory apparatus. Anterior to the left in C, D.

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.Alaria chengguanensis sp. n., SEM of a female paratype. A Epigyne, ventral view B Epigyne, lateral view C Spinnerets D ALS E PMS F PLS. AC aciniform gland spigot; AG aggregate gland spigot; ALS anterior lateral spinneret; CY cylindrical gland spigot; MAP major ampullate gland spigot; mAP minor ampullate gland spigot; n nubbin; PI piriform gland spigot; PLS posterior lateral spinneret; PMS posterior median spinneret; t tartipore.

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 3.Euryleptodes galikias. A, B dorsal view of a living animal C dorsal and F, ventral views of a fixed specimen E dorsal and D ventral details of the eyes G sagittal reconstruction of a whole specimen H sagittal reconstruction of the reproductive system H. Anterior to the left in A, F and G.

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

Figure 5.Alaria chengguanensis sp. n., male holotype (A–B) and female paratype (C–D). A Pedipalp, prolateral view B Embolic division, dorsal view C Epigyne, ventral view D Vulva, dorsal view. CD copulatory duct; Co conductor; MA median apophysis; S spermatheca. Scale bars: D as C.

Figure 4.Prostheceraeus vittatus. A dorsal view of a living animal B living animal feeding on ascidians C dorsal view of a fixed specimen D sagittal reconstruction of the copulatory apparatus E sagittal reconstruction of a whole specimen. Anterior to the left in D, E.

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 5.Prostheceraeus moseleyi. A, B, C dorsal views of living animals D sagittal reconstruction of the reproductive system E dorso-ventral histological sections of the whole animal F dorso-ventral histological sections of the copulatory apparatus G sagittal histological section in the region of the pharynx and copulatory apparatus H sagittal reconstruction of a whole specimen. Anterior to the right in C, D, E, F, G and H.

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 6.Prosthiostomum siphunculus. A, B dorsal views of living animals C sagittal reconstruction of a whole specimen D sagittal reconstruction of the copulatory apparatus. Anterior to the right in figures C, D.

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