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  Allegheny River Cruiser
            Macromia alleghaniensis Williamson, 1909 (S1S2

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Species distribution map

Range & Habitat:

Streams and rivers on the coastal plain, especially in the core Pine Barrens.

Found along large streams and rivers, sometimes sympatrically with the southern form of Illinois River Cruiser.

 Allegheny River Cruiser male dorsal 

Click on the thumbnails to enlarge additional photos. 

Description:

Restricted yellow spots on the abdomen.  It is superficially very similar to the "Northern" Illinois River Cruiser, differing in minor details.  It does not overlap with that form in New Jersey.  The "Southern" Illinois River Cruiser is found in the same range, but is much brighter.  More study is needed of this genus.

 

Conservation Status:

State: S1S2 - Imperiled to critically imperiled in New Jersey

Global: G4 - Apparently secure globally

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Flight season:

Early Date: 6/9
Late Date: 9/7

Please scroll down for monthly graph.

 

Flight Season
(hover your mouse over the bar for actual data)
 
Number of Records
3 
0 
1 3 2 1
J F M A M J J A S O N D

Months

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Click here for acknowledgments
Date, distribution, and status data courtesy of Allen Barlow, NJOS
© 2006 Jim Bangma, NJOS  Comments or suggestions?  Use the Feedback Form