. The affinities of the North American species of Gomphus as revealed by the genitalia (Odonata, Gomphidae). Gomphus (Fungi). /O. Plate IX. Anterior hamules of Gomphus: 1. vidgatissimus; 2. brevis; 3. exilis; 4. spicatus; 5. borealis; 6. descriptus; 7. lividiis; 8. graslinellus; 9. fraternus; 10. vdlosipes. the variety of forms of anterior hamules in Gomphus is so great that they seem to give few, if any, clues as to relationship of species. Subgenus Hylogomphus (PL VIII: 1). The posterior hamules are broad and backwardly curved or bent from near the base, with a very prominent shoulder a
. The affinities of the North American species of Gomphus as revealed by the genitalia (Odonata, Gomphidae). Gomphus (Fungi). /O. Plate IX. Anterior hamules of Gomphus: 1. vidgatissimus; 2. brevis; 3. exilis; 4. spicatus; 5. borealis; 6. descriptus; 7. lividiis; 8. graslinellus; 9. fraternus; 10. vdlosipes. the variety of forms of anterior hamules in Gomphus is so great that they seem to give few, if any, clues as to relationship of species. Subgenus Hylogomphus (PL VIII: 1). The posterior hamules are broad and backwardly curved or bent from near the base, with a very prominent shoulder and a short and abruptly reflexed terminal hook. The anterior hamules (Pi. IX:2) are half to more than half as long as the posterior hamules, cylindrical and tubular with a blunt extremity. 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 Walker, E. M. (Edmund Murton), 1877-1969; Royal Ontario Museum. Toronto : Royal Ontario Museum
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