Ranger Robb:
Apache Spike-tail, Cordulegaster diadema. det. R.L. Willey. 60030. North Rim Grand Canyon, AZ. 15 September 1942. H.C. Bryant
Ranger Robb:
Apache Spike-tail, Cordulegaster diadema. det. R.L. Willey. 60030. North Rim Grand Canyon, AZ. 15 September 1942. H.C. Bryant_1
Ranger Robb:
Gray Sanddragon, Progomphus borealis. corrected from P. obscurus. 51875. Supai Village, AZ. 10 May 1945. _2
Ranger Robb:
Gray Sanddragon, Progomphus borealis. corrected from P. obscurus. 51875. Supai Village, AZ. 10 May 1945.
Ranger Robb:
Gray Sanddragon, Progomphus borealis. corrected from P. obscurus.. 51875. Supai Village, AZ. 10 May 1945. _1
Ranger Robb:
Apache Spike-tail, Cordulegaster diadema. det. R.L. Willey. 60030. North Rim Grand Canyon, AZ. 15 September 1942. H.C. Bryant_2
Ranger Robb:
Flame Skimmer, Libellula saturata. 600032. Supai Village, AZ. 10 May 1945. Louis Schellbach III
Ranger Robb:
Flame Skimmer, Libellula saturata. 600032. Supai Village, AZ. 10 May 1945. Louis Schellbach III_2
Ranger Robb:
Flame Skimmer, Libellula saturata.600032. Supai Village, AZ. 10 May 1945. Louis Schellbach III_1
Ranger Robb:
Four-spotted Skimmer, Libellula quadrimaculata. 60034. North Rim Grand Canyon, AZ3 June 1939. Louis Schellbach III
Ranger Robb:
Four-spotted Skimmer, Libellula quadrimaculata. 60034. North Rim Grand Canyon, AZ3 June 1939. Louis Schellbach III_1
Ranger Robb:
Four-spotted Skimmer, Libellula quadrimaculata. 60034. North Rim Grand Canyon, AZ3 June 1939. Louis Schellbach III_2
Ranger Robb:
Red Rock Skimmer, Paltothemis lineatipes. det. Jim Johnson. 600033. Yavapai Point, Grand Canyon, AZ. 18 July 1956. Louis Schellbach III
Ranger Robb:
Red Rock Skimmer, Paltothemis lineatipes. det. Jim Johnson. 60033. Yavapai Point, Grand Canyon, AZ. 18 July 1956. Louis Schellbach III
Ranger Robb:
Red Rock Skimmer, Paltothemis lineatipes. det. Jim Johnson. 60033. Yavapai Point, Grand Canyon, AZ. 18 July 1956. Louis Schellbach III
Ranger Robb:
Spot-winged Glider, Pantala hymenaea. Det. R. Hannawacker. 51896. Grand Canyon Village, AZ. 9 July 1943. Louis Schellbach III
Ranger Robb:
Spot-winged Glider, Pantala hymenaea. Det. R. Hannawacker. 51896. Grand Canyon Village, AZ. 9 July 1943. Louis Schellbach III_1
Ranger Robb:
Variegated Meadowhawk, Sympetrum corruptum. Det. Jim Johnson. 51888. North Rim Grand Canyon, AZ. 3 June 1939. Louis Schellbach III
Ranger Robb:
Variegated Meadowhawk, Sympetrum corruptum. Det. Jim Johnson. 51888. North Rim Grand Canyon, AZ. 3 June 1939. Louis Schellbach III_1
Ranger Robb:
Variegated Meadowhawk, Sympetrum corruptum. Det. Jim Johnson. 51888. North Rim Grand Canyon, AZ. 3 June 1939. Louis Schellbach III_2
Ranger Robb:
Western Pondhawk, Erythemis collocata. det. Jim Johnson. 51890. Supai Village, AZ.10 May 1945.Louis Schellbach III
Ranger Robb:
Western Pondhawk, Erythemis collocata. det. Jim Johnson. 51890. Supai Village, AZ.10 May 1945.Louis Schellbach III_1
Ranger Robb:
Western Pondhawk, Erythemis collocata. det. Jim Johnson. 51890. Supai Village, AZ.10 May 1945.Louis Schellbach III_2
Ranger Robb:
Giant Darner, Anax walsinghami. correction from Anax junius. 51891. Supai Village, AZ. 10 May 1945. Louis Schellbach III
Ranger Robb:
Giant Darner, Anax walsinghami. correction from Anax junius. 51891. Supai Village, AZ. 10 May 1945. Louis Schellbach III_1
Ranger Robb:
Giant Darner, Anax walsinghami. correction from Anax junius. 51891. Supai Village, AZ. 10 May 1945. Louis Schellbach III_2
Ranger Robb:
Persephone's Darner, Aeshna persephone. corrections from Anax walshinghami. 51894. Grand Canyon Village, AZ. 15 August 1953. Louis Schellbach III_1
Ranger Robb:
Persephone's Darner, Aeshna persephone. corrections from Anax walshinghami. 51894. Grand Canyon Village, AZ. 15 August 1953. Louis Schellbach III_2
Ranger Robb:
Persephone's Darner, Aeshna persephone. det. R.W. Garrison. 51885. Grand Canyon National Park, AZ. 20 June 1969.
Ranger Robb:
Persephone's Darner, Aeshna persephone. det. R.W. Garrison. 51885. Grand Canyon National Park, AZ. 20 June 1969. _1
