Nigronia fasciata

(Walker, 1853)

Banded Dark Fishfly

Nigronia fasciata is a of dark in the Corydalidae, order Megaloptera. measure 22–28 mm in body length. The species occurs in the eastern United States and is not present in Canada. Like other fishflies, it has aquatic larval stages and terrestrial adults.

Nigronia fasciata by (c) Douglas Hooper, some rights reserved (CC BY), uploaded by Douglas Hooper. Used under a CC-BY license.Nigronia fasciata SERC 06-10-15 0282 (18681967442) by Smithsonian Environmental Research Center. Used under a CC BY 2.0 license.Banded Dark Fishfly - Nigronia fasciata (50139066976) by Christina Butler from Georgia, United States. Used under a CC BY 2.0 license.

Pronunciation

How to pronounce Nigronia fasciata: //nɪˈɡroʊ.niə ˌfæ.siˈeɪ.tə//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

Nigronia fasciata can be distinguished from other eastern North American fishflies by its relatively small size (22–28 mm) and dark, banded appearance. It is smaller than most dobsonflies (Corydalus) and can be separated from the related spring fishfly Chauliodes by its darker coloration and . The genus Nigronia is distinguished from Chauliodes by activity period and larval preferences.

Images

Appearance

measure 22–28 mm (2.2–2.8 cm) in body length. As a dark in the Nigronia, adults likely exhibit the characteristic dark coloration typical of the group, with banded or fasciated patterning suggested by the epithet.

Habitat

Aquatic and riparian . Larvae develop in clean, flowing freshwater streams and rivers. are found near water bodies in wooded or forested areas.

Distribution

Eastern United States. Not present in Canada.

Seasonality

are active in summer. This distinguishes Nigronia from the related Chauliodes (spring fishflies), which are active in spring.

Life Cycle

Aquatic larval development in freshwater streams and rivers, with terrestrial stage. Specific details on deposition, larval duration, and are not documented in available sources.

Ecological Role

Larvae are aquatic in freshwater . may serve as food for terrestrial predators.

Similar Taxa

More Details

Taxonomic note

The was described by Walker in 1853. The Nigronia represents dark fishflies, distinguished from spring fishflies (Chauliodes) by their summer activity period.

Tags

Sources and further reading