One of the mysteries of the English language finally explained.
A large grey North American winged insect related to the alderflies. Its predatory aquatic larva (the hellgrammite) is often used as fishing bait.
- ‘Eastern dobsonflies live east of the Rocky Mountains in the United States and Canada.’
- ‘Whereas, the aquatic immature spends several years in a stream, the adult dobsonfly lives only about 7 days.’
- ‘Fishflies and dobsonflies are nocturnal, while alderflies are active during the day.’
- ‘With the exception of the wetland species, dobsonflies are generally found in well-oxygenated lakes and streams.’
- ‘The fierce-looking, winged dobsonfly has a life cycle that lasts two to five years.’
Early 20th century: of unknown origin.
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