MegalopteraSialidae – Alderflies2 data sources

Sialis californica

This record describes Sialis californica (species). Recorded family: Sialidae. Recorded order: Megaloptera.

Identification and Appearance

Sialis californica - Sialis californica
Contributed by Ken Wolgemuth

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Megaloptera (Alderflies, Dobsonflies, and Fishflies)
Family
Sialidae (Alderflies)
Genus
Sialis

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Additional species information

Species notes from the sources

Etymology: Sialis californica Banks, 1920

About Alderflies, Dobsonflies, and Fishflies: the wider group

Order-level background for Megaloptera, the group containing Sialis californica. Species-specific details appear above.

Group overview

Megaloptera (dobsonflies, fishflies, alderflies) includes ~380 described species. Male dobsonflies have enormous mandibles up to 40mm long - longer than their entire head - used in combat with rival males.

Ecological role of the group

Dobsonfly larvae (hellgrammites) are top predators in stream ecosystems, spending 2-5 years as aquatic nymphs before pupating. They can grow up to 90mm long, making them some of the largest aquatic insect larvae in North America.

Economic and practical significance of the group

Hellgrammites (dobsonfly larvae) are prized bait for bass fishing across North America. They are also important bioindicator species for freshwater stream health monitoring.

Recorded sources for this group: Freshwater ecology research, fishing industry. Imported estimates may describe particular regions or reporting periods.

Explore Megaloptera families and species →

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Ken Wolgemuth. Contributors retain copyright over their individual contributions.