Seaweed Flies

Pronunciation

How to pronounce Fucellia: /fjuˈsɛliə/

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Summary

Fucellia is a genus of seaweed flies distinguished primarily by the structure of the male eyes and their coastal habitats. They are often found in regions rich in seaweed, where their larvae develop and feed on decaying plant matter. There are around 20 described species in this genus, with notable distributions across North America.

Physical Characteristics

Males have dichoptic eyes that are broadly separated above, unlike most males in the family Anthomyiidae where the eyes are touching or narrowly separated.

Identification Tips

Observe the separation of male eyes and the habitat near seaweed piles.

Habitat

Found on seashores and along the shores of the Great Lakes.

Distribution

Western North America to eastern Canada, including regions from Alaska to California, Ontario, and Newfoundland.

Diet

Larvae develop on piles of seaweed, suggesting a diet associated with decaying plant material in aquatic environments.

Life Cycle

Adults are active year-round in mild conditions; eggs are laid on seaweed where larvae feed and develop.

Reproduction

Eggs are laid on seaweed piles, but specific details on mating behaviors are not provided.

Ecosystem Role

Plays a role in breaking down organic material by feeding on decaying seaweed, contributing to nutrient cycling in coastal ecosystems.

Evolution

Fucellia is categorized in a separate subfamily, the Fucelliinae, within Anthomyiidae, which suggests an evolutionary adaptation to their coastal habitats.

Tags

• Diptera
• Seaweed Flies
• Anthomyiidae
• Fucellia