. Bulletin of the British Museum (Natural History) Entom Supp. . 267 268 Figs. 257-268. Form of the postgenal cleft (257-264) and of the hypostomium (265-268) in mature larvae of African Simulium. 257 and 258, Metomphalus, medusaeforme- group. 259, Metomphalus, albivirgulalum-group. 260, Metomphalus, bovis-group. 261, Edwardsellum. 262, Byssodon. 263, Tetisimulium. 264, Odagmia. 265, Phoreto- myia, lumbwanum-gr oup. 266, Phoretomyia, copleyi-group. 267, Phoretomyia, berneri- group. 268, Lewisellum. (Figures 265-268 illustrate the hypostomium in phoretic forms.). Please note that these images a
. Bulletin of the British Museum (Natural History) Entom Supp. . 267 268 Figs. 257-268. Form of the postgenal cleft (257-264) and of the hypostomium (265-268) in mature larvae of African Simulium. 257 and 258, Metomphalus, medusaeforme- group. 259, Metomphalus, albivirgulalum-group. 260, Metomphalus, bovis-group. 261, Edwardsellum. 262, Byssodon. 263, Tetisimulium. 264, Odagmia. 265, Phoreto- myia, lumbwanum-gr oup. 266, Phoretomyia, copleyi-group. 267, Phoretomyia, berneri- group. 268, Lewisellum. (Figures 265-268 illustrate the hypostomium in phoretic forms.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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