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Genus Erythemis - Pondhawks

Common Pondhawk eating a Pearl Crescent - Erythemis simplicicollis - female Western Pondhawks - Erythemis collocata - female Dragonfly Larva, Eastern Pondhawk - Erythemis simplicicollis - female Eastern Pondhawk  - Erythemis simplicicollis - female Green Dragonfly - Erythemis simplicicollis Dragonfly - Erythemis simplicicollis Eastern Pondhawk imm male ? - Erythemis simplicicollis - male Eastern Pondhawk - Erythemis simplicicollis - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Odonata (Dragonflies and Damselflies)
Suborder Anisoptera (Dragonflies)
Family Libellulidae (Skimmers)
Genus Erythemis (Pondhawks)
Explanation of Names
Author of genus is Hagen, 1861. From eryth- (?), Greek, meaning red, plus the ubiquitous suffix -themis. This is from Greek, first used by Hagen in 1861, and it means "what has been established", i.e., rule, or law. Themis was also a goddess of order and justice. However, it is possible the suffix was also simply based on the Greek suffixes -hemis (half), or -emis. See this Odonata list post by KD Dijkstra.
Numbers
Odonata of North America lists 7 species.
Dunkle, p. 211, lists 5 species. (1)