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New Jersey Endangered and Threatened Species Field Guide

Image of An adult male Allegheny river cruiser.Zoom+ An adult male Allegheny river cruiser. © Jim Bangma

Allegheny river cruiser

Macromia alleghaniensis

Species Group: Invertebrate

Conservation Status

State: Special Concern



Ranging between 2.6” -2.8” in length, the Allegheny river cruiser is a large dark cruiser with bright green eyes. The thorax lacks frontal stripes and there are yellow spots on its abdomen. The female is similar in appearance but has a robust cylindrical abdomen.

Image of Range of the Allegheny river cruiser in New Jersey.Zoom+ Range of the Allegheny river cruiser in New Jersey.


This species can be found on large, clean tea-colored rivers with sand and gravel bottoms. They are found in the southern portion of New Jersey especially in the core Pine Barrens.


Cruisers are the fastest flying dragonflies in New Jersey and prey on flying invertebrates.


The Allegheny river cruiser is active from early June through late August in New Jersey.


In New Jersey the Allegheny River cruiser is not an abundant species and therefore is considered a species of Special Concern in the state.

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: Macromiidae
                Genus: Macromia
                   Species: M. alleghaniensis

Find Related Info: Invertebrates, Special concern

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