Insects: Native Species
Scientific name: Procanace acuminata
Common name(s): Hawaiian Freshwater Beach Fly
Status: Endemic
Habitat: Riffles and cascades in streams
Preferred Area of Stream: Procanace acuminata is only found in clean, clear and cool highly oxygenated water on wetted areas of boulders and rocks
Range in Hawai‘i: Moloka‘i, Maui and Hawai‘i
Diet: Larvae are aquatic and feed on decaying organic material and freshwater algae
Predators: Native and introduced fish, predatory aquatic insects, introduced crustaceans
Fact: Species of flies in the Canacidae family normally live in marine environments along the coast in the intertidal zone. Hawai‘i is the only area where a large group of these flies have evolved to live in freshwater habitats. Adult Canacidae are distinguished from flies in the Ephydridae family by having a large clypeus (a pointed knob) on the adults face while the Ephydridae flies lack this striking feature.
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