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Fig. 18 in Some nematodes from freshwater fishes in central Africa

Fig. 18. Gendria sp. from Pantodon buchholzi Peters, scanning electron micrographs of male. A – cephalic end, apical view; B – mouth, apical view; C – mouth with visible circumoral row of denticles, subapical view; D – deirid. Abbreviations: a – amphid; b – cephalic papilla.

Fig. 6 in Some nematodes from freshwater fishes in central Africa

Fig. 6. Cithariniella khalili Petter, Vassiliadẻs et Troncy, 1972 from Synodontis acanthomias Boulenger. A – anterior end of young female, lateral view; B, C – cephalic end, lateral and apical views, respectively; D – spicule and gubernaculum, lateral view; E – posterior end of young female, lateral view; F – posterior end of male, lateral view; G – distribution of caudal papillae in region of cloaca, ventral view; H – last pair of postcloacal papillae, ventral view; I – egg (only basal parts of filaments illustrated).

Fig. 12 in Some nematodes from freshwater fishes in central Africa

Fig. 12. Gendria longispiculata sp. n. from Schilbe grenfelli (Boulenger), scanning electron micrographs of male. A – posterior end of body, lateral view; B – subventral genital papilla located anterior to ventral sucker; C, D – caudal end, lateral and ventral views, respectively (arrows indicate genital papillae). Abbreviations: c – cloacal opening; d – ventral sucker; m – median precloacal papilla.

Fig. 5 in Some nematodes from freshwater fishes in central Africa

Fig. 5. Falcaustra piscicola (von Linstow, 1907) from Distichodus lusosso Schilthuis, scanning electron micrographs of male. A, B – cephalic end, sublateral and apical views, respectively; C – tail, subventral view (arrow indicates phasmid); D – detail of mouth, apical view; E – posterior end of body, ventral view; F – tail, ventral view. Abbreviations: a – amphid; b – cephalic papilla; c – lateral postanal papilla; e – median unpaired preanal papilla.

Fig. 17 in Some nematodes from freshwater fishes in central Africa

Fig. 17. Gendria sp. from Pantodon buchholzi Peters, scanning electron micrographs of male. A – anterior end, subventral view (arrow indicates lateral ala); B – same, lower magnification; C – anterior end, lateral view (arrow indicates lateral ala); D – cephalic end, subapical view from lateral side (arrow indicates protruding dorsal oesophageal tooth); E – cephalic end, subapical view oriented dorsoventrally. Abbreviations: a – amphid; b – cephalic papilla; c – deirid; e – excretory pore.

Fig. 15 in Some nematodes from freshwater fishes in central Africa

Fig. 15. Gendria sanghaensis sp. n. from Schilbe marmoratus Boulenger, scanning electron micrographs. A – tail of male, ventrolateral view (arrow indicates phasmid); B – median precloacal papilla. Abbreviation: e – cloacal aperture.

Fig. 20. Quimperia lanceolata Gendre, 1926 in Some nematodes from freshwater fishes in central Africa

Fig. 20. Quimperia lanceolata Gendre, 1926 from Ctenopoma cf. kingsleyae Günther, scanning electron micrographs. A, B – cephalic end of male, subdorsal and apical views; C – cephalic end of male with initiating lateral alae, subdorsal view; D – posterior end of male, ventrolateral view (arrow indicates phasmid); E – anterior end of male with distinct lateral alae, subdorsal view; F – deirid situated just posterior to posterior end of lateral ala, sublateral view; G – posterior end of male, ventral view (arrows indicate preanal papillae). Abbreviations: a – amphid; b – submedian double cephalic papilla; c – lateral ala; d – deirid; e – cloacal aperture; f – median precloacal papilla; g – ventral precloacal sucker.

Fig. 24 in Some nematodes from freshwater fishes in central Africa

Fig. 24. Dujardinascaris malapteruri (Baylis, 1923) from Malapterurus monsembeensis Roberts, female. A – anterior end of body, lateral view; B, C – cephalic end, dorsal and subventral views, respectively; D – tail, lateral view; E – egg.

Fig. 27 in Some nematodes from freshwater fishes in central Africa

Fig. 27. Spinitectus polli Campana-Rouget, 1961 from Synodontis decorus Boulenger. A – anterior end of gravid female, lateral view; B – same, higher magnification; C – cephalic end of male, apical view; D – mouth, apical view; E – tail of male, lateral view; F – tail of female, ventral view; G – posterior end of female, lateral view; H – posterior end of male, lateral view; I – caudal end of male, ventral view; J – egg.

Fig. 26. A, B in Some nematodes from freshwater fishes in central Africa

Fig. 26. A, B – Dujardinascaris sp. third-stage larva from Coptodon tholloni (Sauvage) (anterior and posterior body ends, lateral views).

Fig. 29 in Some nematodes from freshwater fishes in central Africa

Fig. 29. Spinitectus polli Campana-Rouget, 1961 from Synodontis decorus Boulenger, scanning electron micrographs. A, B – caudal end of male, sublateral and subventral views, respectively; C – tail of female, ventrolateral view; D – distal end of male tail, ventral view. Abbreviations: e – cloaca; f – anus.

Figure 6 in Three new Dactylogyrus species (Monogenea: Dactylogyridae) and redescription of one other, gill parasites of five Labeo spp. (Cypriniformes: Cyprinidae) from the Sanaga basin (Cameroon, Central Africa)

Figure 6. Drawing of sclerotized parts of Dactylogyrus yassensis. (DA) dorsal anchor, (DB) Dorsal bar, (VB) ventral bar, (Pe) penis, (AP) accessory piece, (Vg) vagina, (N) needle. Scale bar: 20 Μm.

Figure 3 in Three new Dactylogyrus species (Monogenea: Dactylogyridae) and redescription of one other, gill parasites of five Labeo spp. (Cypriniformes: Cyprinidae) from the Sanaga basin (Cameroon, Central Africa)

Figure 3. Drawing of sclerotized parts of Dactylogyrus sanagaensis sp. nov.: (DA) dorsal anchor, (DB) Dorsal bar, (VB) ventral bar, (Pe) penis, (AP) accessory piece, (Vg) vagina, (N) needle. Scale bar: 20 Μm.

Figure 2 in Three new Dactylogyrus species (Monogenea: Dactylogyridae) and redescription of one other, gill parasites of five Labeo spp. (Cypriniformes: Cyprinidae) from the Sanaga basin (Cameroon, Central Africa)

Figure 2. Measurements taken on sclerotized parts according to Gussev (1962). Anchor: (a) total length, (b) length to notch, (c) outer root length, (d) inner root length, (e) point length; (DB) Dorsal bar and (VB) ventral bar: (x) length, (w) width; (H) hook I to VII: length ("larval hook" + shank = proximal + distal subunit); Male copulatory organ (MCO): (TL) total length, (Pe) penis, (L) length, (APb) accessory piece base length; (Vg) vagina: (L) length, (l) width. Scale bar: 20 Μm.

Figure 7 in Three new Dactylogyrus species (Monogenea: Dactylogyridae) and redescription of one other, gill parasites of five Labeo spp. (Cypriniformes: Cyprinidae) from the Sanaga basin (Cameroon, Central Africa)

Figure 7. Result of the principal component analysis performed on measurements (Μm) of sclerotized parts of monogeneans.

Figure 5 in Three new Dactylogyrus species (Monogenea: Dactylogyridae) and redescription of one other, gill parasites of five Labeo spp. (Cypriniformes: Cyprinidae) from the Sanaga basin (Cameroon, Central Africa)

Figure 5. Drawing of sclerotized parts of Dactylogyrus djimensis sp. nov.: (DA) dorsal anchor, (DB) Dorsal bar, (VB) ventral bar, (Pe) penis, (AP) accessory piece, (Vg) vagina, (N) needle. Scale bar: 20 Μm.

Fig. 3. Drypetes aphanes Quintanar, D.J in Notes on cauliflory, sexual dimorphism and biogeography in Drypetes (Putranjivaceae, Malpighiales) and a taxonomic treatment for D. gabonensis and two new cauliflorous threatened species from Central Africa, D. aphanes sp. nov. and D. cauta sp. nov.

Fig. 3. Drypetes aphanes Quintanar, D.J. Harris & Barberá sp. nov. a. Branch and leaves. b. Petiole and leaf base, adaxial view. c. Female inflorescence. d. Female flower. e. Female sepal, abaxial view. f. Male flower. g. Fruit. – h–n. D.cauta D.J.Harris, Barberá & Quintanar sp. nov. h. Branch and leaves. i. Petiole and leaf base, adaxial view. j. Terminal bud and stipules. k. Female flower. l. Female sepal, abaxial view. m. Male flower. n. Fruit [a–c, g. Breteler 14796 (MO 6561411). d–e. McPherson 16666 (MO 6343500). f. McPherson 16690 (MO 6343501). h–i, m. Le Testu 5512 (P04707049). j. M'Boungou462 (K). k–l. Le Testu 8327 (P04707812). n. McPherson 16249 (MO 04647294)]. Illustration by Román García Mora.

Fig. 4 in Notes on cauliflory, sexual dimorphism and biogeography in Drypetes (Putranjivaceae, Malpighiales) and a taxonomic treatment for D. gabonensis and two new cauliflorous threatened species from Central Africa, D. aphanes sp. nov. and D. cauta sp. nov.

Fig. 4. Distribution of Drypetes gabonensis Pierre ex Hutch. (blue circles), Drypetes aphanes Quintanar, D.J.Harris & Barberá sp. nov. (red triangles) and D.cauta D.J.Harris, Barberá & Quintanar sp. nov. (green squares).

Fig. 2 in Notes on cauliflory, sexual dimorphism and biogeography in Drypetes (Putranjivaceae, Malpighiales) and a taxonomic treatment for D. gabonensis and two new cauliflorous threatened species from Central Africa, D. aphanes sp. nov. and D. cauta sp. nov.

Fig. 2. Drypetesgabonensis Pierre ex Hutch. a. Branch, leaves, male inflorescences. b. Branch, leaves, female inflorescences. c. Male flower before anthesis. d. Male flower. e–f. Sepals of male flower. g. Longitudinal section of male flower. h. Male flower without sepals. i. Ventral view of anther. j. Disk of male flower. k. Longitudinal section of the disk of the male flower, showing the central conical projection. l. Female flower without a sepal. m. Opened ovary showing the ovules and transverse section of the ovary. n. Fruit. o. Opened fruit showing the seeds. p. Seed. [a–p, Klaine 551, 690, 1034, 1278 (many specimens, see list of studied material).] Details c–h share the scale of 3 mm placed in d. Details j and k share the scale of 2 mm placed in j. details l and m the scale of 3 mm placed in m. Illustration by E. Delpy, modified for its publication in Flore du Gabon (Harris et al. 2021).

Fig. 1 in Notes on cauliflory, sexual dimorphism and biogeography in Drypetes (Putranjivaceae, Malpighiales) and a taxonomic treatment for D. gabonensis and two new cauliflorous threatened species from Central Africa, D. aphanes sp. nov. and D. cauta sp. nov.

Fig. 1. Different placements of the inflorescences in some African species of Drypetes Vahl: a–b. D. gilgiana (Pax) Pax & K.Hoffm. (categories IV and III, respectively). c. D. preussii (Pax) Hutch. (category I). d. D. stipularis (Müll.Arg.) Hutch. (category I). e. D. polyantha Pax & K.Hoffm. (category II). f. D.verrucosa Pierre ex Hutch. (category I). g. D.laciniata (Pax) Hutch. (category III) (a. E. Bidault 5644. b. E. Bidault 4844. c. A.H. Paradis 332. d. E. Bidault 2258. e. D.J. Harris 9761. f. E. Bidault 1861. g. E. Bidault 2245.) Photographs taken by the collectors.