description Ophiogomphus anomalus Overview
Ophiogomphus anomalus, known as the extra-striped snaketail, is a species of dragonfly in the family Gomphidae. Endemic to eastern North America, this rare insect is primarily found in regions surrounding the Great Lakes and parts of the northeastern United States. It inhabits large, clean rivers and streams with gravel or rocky bottoms where the aquatic nymphs develop. The adult dragonfly is notable for the distinct yellow stripes patterned across its dark green and black thorax.
help Ophiogomphus anomalus FAQ
Where is the Ophiogomphus anomalus typically found?
This rare snaketail dragonfly has a highly restricted range in North America, primarily near the Great Lakes region. It is most commonly spotted in clean, fast-flowing rivers and streams in states like Michigan and Wisconsin.
When was the Ophiogomphus anomalus first described?
The species was officially described in 1898 by the entomologist Robert Ridgway. It belongs to the family Gomphidae, which are commonly known as clubtail or snaketail dragonflies.
Why is Ophiogomphus anomalus considered rare?
Its rarity is largely due to its strict habitat requirements; it relies on pristine, unpolluted riverine ecosystems. Pollution and habitat destruction near the Great Lakes have severely limited its geographic distribution.
What does the Ophiogomphus anomalus look like?
Like other snaketails, it features distinct markings on its thorax that can resemble the scales or patterns of a snake. The specific coloration and abdominal patterns help differentiate it from the dozens of other Gomphidae species found in North America.
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