. Bulletin of the British Museum (Natural History) Entomology. llU Uh «,*>(>k J'Jj fc V V> fc J*** r** «sT7 V^wsx; Wfn^l \ ffl» 57io —s__/ U"*> yTy \T^__ w W ^ 20. Figs 17-24 17, thorax of 5. exiguum pupa. 18, thorax of 5. mexicanum pupa. 19, dorsal view of pupal abdomen of Simulium showing chaetotaxy. 20, ventral view of pupal abdomen of Simulium showing chaetotaxy. 21, hypostomium of larva of 5. exiguum. 22, hypostomium of larva of S. mexicanum. 23, mandible of S. exiguum larva; inset-variations in mandibular serrations of 5. bipunctatum. 24, anal gills of 5. exiguum
. Bulletin of the British Museum (Natural History) Entomology. llU Uh «,*>(>k J'Jj fc V V> fc J*** r** «sT7 V^wsx; Wfn^l \ ffl» 57io —s__/ U"*> yTy \T^__ w W ^ 20. Figs 17-24 17, thorax of 5. exiguum pupa. 18, thorax of 5. mexicanum pupa. 19, dorsal view of pupal abdomen of Simulium showing chaetotaxy. 20, ventral view of pupal abdomen of Simulium showing chaetotaxy. 21, hypostomium of larva of 5. exiguum. 22, hypostomium of larva of S. mexicanum. 23, mandible of S. exiguum larva; inset-variations in mandibular serrations of 5. bipunctatum. 24, anal gills of 5. exiguum 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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