Rainieria calceata
EN

Rainieria calceata

Local name: tvärbandvingad skridfluga

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Rainieria_calceata

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Rainieria calceata faces severe population decline due to the destruction and fragmentation of its specialized wetland breeding habitats across Scandinavia. Agricultural intensification and urban development have eliminated many of the shallow, nutrient-rich pools and marshy areas essential for its larval development. Climate change compounds these pressures by altering precipitation patterns and increasing drought frequency, further reducing the availability of suitable aquatic microhabitats.

Threat summary

Habitat

This specialized dipteran inhabits shallow, temporary pools and marshy areas with rich organic matter, typically found in boreal and temperate wetland systems across Scandinavia. The species requires specific water chemistry conditions and vegetation structure for successful reproduction and larval development.

Threatened in Austria

Calidris ferrugineaVU

Calidris ferruginea

Declining
CR

Sorbus cucullifera

Unknown
VU

Large Tree-chernes

Dendrochernes cyrneus

Unknown
VU

Olive Skipper

Pyrgus serratulae

Unknown

Frequently asked questions

Why is tvärbandvingad skridfluga classified as Endangered?
tvärbandvingad skridfluga is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Rainieria calceata faces severe population decline due to the destruction and fragmentation of its specialized wetland breeding habitats across Scandinavia. Agricultural intensification and urban development have eliminated many of the shallow, nutrient-rich pools and marshy areas essential for its larval development. Climate change compounds these pressures by altering precipitation patterns and increasing drought frequency, further reducing the availability of suitable aquatic microhabitats.
Where does tvärbandvingad skridfluga live?
tvärbandvingad skridfluga occurs in Austria, Belarus, Belgium, Bosnia & Herzegovina, Bulgaria, and Croatia (plus 21 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to tvärbandvingad skridfluga?
The main threats to tvärbandvingad skridfluga are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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