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New Jersey Endangered and Threatened Species Field Guide

Image of An adult male extra-striped snaketail.Zoom+ An adult male extra-striped snaketail. © Sidney W. Dunkle

Extra-striped snaketail

Ophiogomphus anomalus

Species Group: Invertebrate

Conservation Status

State: Special Concern



Averaging 1.7” in length, the extra-striped snaketail has black lateral thoracic stripes forming an N shape above the base of the legs. The legs are all black and the abdomen is mostly black with yellow dorsal markings.

Image of Range of the extra-striped snaketail in New Jersey.Zoom+ Range of the extra-striped snaketail in New Jersey.


The extra-striped snaketail is an historic species in New Jersey. It was last observed in northwest Sussex County in 1920. The species’ habitat is large rivers and streams where there are sediments appropriate for the burrowing larvae.


Adults feed on flying insects including damselflies, moths and butterflies. The nymphs prey on small burrowing aquatic invertebrates.


Though little is known about the extra-stripped snaketail in New Jersey, the species should be found similar to other snaketail species from late May to early July.


Due to its historic status, the extra-stripped snaketail is considered a species of Special Concern in New Jersey.

Text derived from the book, Field Guide to Dragonflies and Damselflies of New Jersey. 2009. By Allen E. Barlow, David M. Golden and Jim Bangma. Edited and updated by Larissa Smith in 2011.

Scientific Classification

Kingdom: Animalia
    Phylum: Arthropoda
       Class: Insecta
          Order: Odonata
             Family: Gomphidae
                Genus: Ophiogomphus
                   Species: O. anomalus

Find Related Info: Invertebrates, Special concern

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