The National Red List Project

UKJNCC - Ttroglodytus2022 | Trachelus troglodytus

Assessment ID
Ttroglodytus2022
Taxon name
Trachelus troglodytus
Fabricius, 1787
Uploaded by
JNCC
Taxonomic information
Scientific name
Trachelus troglodytus
Fabricius, 1787
Common name(s)
Hermit Stem-sawfly
Assessed taxon level
Species
Higher level taxonomic groupings
Invertebrates
Insects
Kingdom
Animalia
Phylum
arthropoda
Class
insecta
Order
hymenoptera
Family
cephidae
Genus
Trachelus
Species
troglodytus
Species authority
Fabricius, 1787
National taxonomy system
UKSI
Unique national taxonomic ID
NHMSYS0020482521
Location and scope
Specific locality or subnational name or regional name
Great Britain
Scope (of the Assessment)
National
Countries included within the scope of the assessment
United Kingdom of Great Britain and Northern Ireland (the)
Country ISO code(s)
GB-SCT
GB-ENG
GB-WLS
Does the assessment cover a marine EEZ area(s)?
Not assigned
Conservation Status
Assessed as
Regionally Extinct
Abbreviated status
RE
Criteria system used
IUCN

(see Assessment details)

Assessment rationale/justification
There are old records from the London area, Hampshire, west Cornwall and the last from Marlborough in 1925 (a record on the NBN Atlas from 2000 has been confirmed as erroneous). Whilst dedicated survey effort has not been put into searching for the species, one would expect the species to be detected were it still present, and the gap of nearly a century without a record means that a status of Regionally Extinct has been applied.
Assessment details
Year assessed
2022
Assessors/contributors/reviewers listed
Andy Musgrove
Criteria system used
IUCN
Reference for methods given
IUCN (2012) IUCN Red List Categories and Criteria. Version 3.1. 2nd Edition, IUCN Species Survival Commission. IUCN, Gland, Switzerland & Cambridge, UK plus regional guidelines v.543
URL (link) of redlist assessment or publication
https://www.sawflies.org.uk/wp-content/uploads/2022/10/Sawfly-Review-Phase-1-FINAL.pdf
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Habitat and systems
Ecological system type
Terrestrial
Yes
Freshwater
No
Marine
No
Publication
A review of the status of the sawflies of Great Britain Phase 1: Families other than the Tenthredinidae
Musgrove, A.J. 2022. A review of the status of sawflies of Great Britain - Phase 1: families other than Tenthredinidae. Natural England.