Wisconsin Odonata Survey

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Macromia pacifica  Hagen, 1861
Gilded River Cruiser


Macromiidae, Cruiser Family
Possible Species

Status-Global/State:

Global: G4     Wisconsin: SH    

Distinguishing Characteristics:

River cruisers are generally larger and more metallic than the stream cruiser. This cruiser has bright yellow and dark brown coloration. The body length averages about 2.9 inches. The thorax has parallel-sided full-length yellow frontal stripes, The abdomen has a yellow ring near its base and yellow spots in pairs dorsally. The tip of the abdomen has no markings. The male abdomen is slightly clubbed. The eyes are blue-green. The female is similar to the male.

Description of Habitat/Range:

Found in southeastern United States, from Texas to Ohio, the gilded river cruiser prefers streams and rivers. Like the stream cruiser larvae, the larvae may travel more than 40 to 50 feet before emerging. Wisconsin may have been part of the historical range as there is a historical record from Milwaukee County.

Flight Season:

Throughout its range, the flight season is from mid-April to late August.


Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
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.
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