Rhaphium patulum

Key Details

Taxonomic Groups: Invertebrate > insect - true fly (Diptera) > Long-legged fly
Red List Status: Vulnerable (Not Relevant) [VU(nr)]
D5 Status: Included in the baseline Red List Index for England (Wilkins, Wilson & Brown, 2022)
Section 41 Status: (not listed)
Taxa Included Synonym: (none)
UKSI Recommended Name: Rhaphium patulum
UKSI Recommended Authority: (Raddatz, 1873)
UKSI Recommended Qualifier: (none specified)
Red List Citation: Drake, 2018
Notes on taxonomy/listing: (none)

Criteria

Question 1: Does species need conservation or recovery in England?
Response: No
Justification: Another Northern species with only a few sparse and scattered records from England - none since 1993. Older records from Suffolk and Northamptonshire appear to be incorrect.
Question 2: Does recovery/ conservation depend on species-specific actions?
Response: No
Justification: Habitat requirements derived from records are mainly river margins, exposed riverine sediments (Northern and Western records) and muddy river margin and reedbeds. With such a dearth of records in England and the time lapse since the species was last found targeted actions would be implausible.
Question 3: At a landscape scale, would the species benefit from untargeted habitat management to increase habitat mosaics, structural diversity, or particular successional stages?
Response: N/A
Justification:

Species Assessment

Not relevant as no Key Actions defined.

Key Actions

No Key Actions Defined

Return to List

Acknowledgment:
Data used on this website are adapted from Threatened species recovery actions 2025 baseline (JP065): Technical report and spreadsheet user guide (Natural England, 2025). Available here.