CRCritically Endangered

stor brunalgfluga

Helcomyza ustulata

Helcomyza ustulata, commonly known as stor brunalgfluga, is a critically endangered dipteran species belonging to the family Helcomyzidae. This specialized fly is endemic to coastal regions of northern Europe, where it inhabits specific marine littoral environments.

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Countries

01Classification

Taxonomy & Classification

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Helcomyzidae

Genus

Helcomyza

stor brunalgfluga belongs to the family Helcomyzidae, order Diptera, within the Insecta class.

02Description

Species Profile

Helcomyza ustulata, commonly known as stor brunalgfluga, is a critically endangered dipteran species belonging to the family Helcomyzidae. This specialized fly is endemic to coastal regions of northern Europe, where it inhabits specific marine littoral environments. The species demonstrates a highly restricted distribution, making it particularly vulnerable to environmental changes and habitat degradation. Its larvae develop in decomposing seaweed and organic matter along rocky shorelines, requiring specific salinity levels and substrate conditions for successful reproduction. The adult flies are typically found in close proximity to their larval habitat during the breeding season. The species faces significant threats from coastal development, pollution, and climate change impacts on marine ecosystems. Rising sea levels and increased storm intensity associated with climate change pose particular risks to the narrow coastal zones where this species occurs. Additionally, human activities such as coastal construction, tourism infrastructure development, and pollution from marine sources contribute to habitat degradation. The removal or disturbance of seaweed deposits, which serve as critical breeding sites, further threatens population stability. Conservation efforts for this species remain limited due to its recent recognition as critically endangered and the specialized nature of its habitat requirements. Research into population dynamics, distribution patterns, and specific ecological needs is essential for developing effective conservation strategies. Protection of coastal habitats and regulation of human activities in critical areas represent important conservation priorities for ensuring the species' survival.

The stor brunalgfluga faces primary threats from coastal development and habitat destruction along its narrow range of suitable shoreline environments. Climate change impacts, including sea level rise and increased storm intensity, threaten the specific coastal conditions required for the species' survival. Pollution and human disturbance of seaweed deposits that serve as essential breeding habitat further compromise population viability.

Key Facts

IUCN StatusCritically Endangered (CR)
GroupInsects
03Habitat

Habitat & Distribution

This species inhabits coastal marine littoral zones along rocky shorelines in northern Europe. The larvae specifically require decomposing seaweed and organic matter deposits in intertidal areas with particular salinity and substrate conditions.

MARINEMajorTERRESTRIALMajor
04Threats

Threats

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IUCN Red List: Critically Endangered

The stor brunalgfluga faces primary threats from coastal development and habitat destruction along its narrow range of suitable shoreline environments. Climate change impacts, including sea level rise and increased storm intensity, threaten the specific coastal conditions required for the species' survival. Pollution and human disturbance of seaweed deposits that serve as essential breeding habitat further compromise population viability.

Detailed threat classification data is sourced from IUCN assessments as they become available.

Community

Community Sightings

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07Sources

Sources & Attribution

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

This page: SpeciesRadar (2025). stor brunalgfluga (Helcomyza ustulata). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/stor-brunalgfluga

Full citation guide & data usage terms