River-cruiser
Guides
Macromia illinoiensis georgina
Georgia river cruiser
Macromia illinoiensis georgina is a subspecies of river cruiser dragonfly in the family Macromiidae. It is currently recognized as a synonym of Macromia illinoiensis. The subspecies was described by Selys in 1878 and has been recorded from Vermont in the northeastern United States. As a member of the genus Macromia, it shares the characteristic large size and riverine habitat preferences typical of river cruisers.
Macromia illinoiensis illinoiensis
Illinois River Cruiser
A subspecies of river cruiser dragonfly whose larvae are frequently colonized by invasive zebra mussels (Dreissena polymorpha). Larvae exhibit burying behavior in substrates and employ both sit-and-wait ambush and active sprawling foraging strategies. Research indicates zebra mussel attachment negatively affects prey capture rates and alters burying depth, with behavioral changes reversing upon natural mussel loss at molting.
Macromia magnifica
Western River Cruiser
Macromia magnifica, commonly known as the western river cruiser, is a species of dragonfly in the family Macromiidae. It occurs in Central America and North America. The species holds a conservation status of Least Concern (LC) according to the IUCN, with a stable population and no immediate threats to survival. The IUCN status was last reviewed in 2018.
Macromia pacifica
Gilded River Cruiser
Macromia pacifica, commonly known as the gilded river cruiser, is a dragonfly species in the family Macromiidae. It is native to North America. The species was first described by Hagen in 1861. Its IUCN conservation status is Least Concern, last assessed in 2017.