Wisconsin Odonata Survey

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Macromia taeniolata  Rambur, 1842
Royal River Cruiser


Macromiidae, Cruiser Family
"Most Wanted" Species

Status-Global/State:

Global: G5     Wisconsin: S2S3    

Distinguishing Characteristics:

River cruisers are generally larger and more metallic than the stream cruiser. The blackish royal river cruiser is the largest river cruiser, varying from 3.0 to 3.6 inches in length.The thorax has half-length frontal yellow stripes. The abdomen has small yellow spots dorsally. The male abdomen is not clubbed but does widen toward the end. The females' wings are often tinted yellow turning brown with age. The eyes are green. The female is similar to the male except for the abdomen.

Description of Habitat/Range:

Ranging throughout eastern and southern United States, the royal river cruiser can be found at clean rivers, streams, and lakes. Like the stream cruiser, the larvae may travel more than 40 to 50 feet before emerging. In Wisconsin, this species has mostly been documented on the Mississippi River and seems to prefer medium to large sloughs and occasionally the main channel in areas with wooded or rocky shorelines.

Flight Season:

In the northern part of the range, the flight season is from mid-June to early September.


Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
19%
(6)
32%
(10)
39%
(12)
10%
(3)
Shading illustrates monthly percentages of the total flight season records for the species. Each flight season record is a unique date/location/observer combination where one or more adult or an exuvia was recorded (excludes nymphs). The actual number of flight season records for each month is shown in parentheses.

Flight seasons begin earlier in the southern part of the state, often by a week or more. Also, flight charts may not be accurate for rare species because of few data available.
View user-submitted photos

(Click on photos to enlarge)
Photo of Male royal river cruiser
Male royal river cruiser. © Dan Jackson

Male royal river cruiser
Photo of Male royal river cruiser
Male royal river cruiser. © Dan Jackson

Male royal river cruiser
Photo of Male royal river cruiser
Male royal river cruiser. © Dan Jackson

Male royal river cruiser
Photo of Female royal river cruiser
Female royal river cruiser. © Dan Jackson

Female royal river cruiser



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