. Bulletin of the British Museum (Natural History) Entomology. . 136 137 Figs 131-137 Ventral view of head showing postgenal cleft and bridge of: (131)5. exiguum; (132)5. gonzalezi; (133) S. bipunctatum; (134) S. lewisi; (135) 5. escomeli; (136) S. mexicanum; (137) S. 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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