Occurrence record: 40570362

Human observation of Eristalis tenax (Linnaeus, 1758) recorded on 2025-03-30

API

Overview

Occurrence ID	40570362
Other catalogue numbers	0195ee00-281e-7000-a5b7-eb898438ce52
Basis of record	Human observation
Scientific name	Eristalis tenax (Linnaeus, 1758)
Licence	CC-BY
Record Date	2025-03-30 (Day)
Locality	Vc 52 PLAS CADNANT
Location	Grid Reference: SH559730 Latitude: 53.2344318 Longitude: -4.1604461
Recorded by	Thomas Mawdsley
Identification verification status	Accepted - considered correct
Occurrence remarks	Basking on shrub in wet wooland

Dataset

Data partner	Biological Records Centre
Data resource	Hoverfly records verified via iRecord
Bibliographic citation	Biological Records Centre. [Date of download] Hoverfly records verified via iRecord.
Collection code	iRecord \| App

Abundance

Individual count	6–20

Organism

Life stage	adult
Sex	mixed

Event

Occurrence date	2025-03-30
Date precision	Day
Event date	2025-03-30
Event ID	28795806

Taxonomy

Scientific name	Eristalis tenax (Linnaeus, 1758) Supplied scientific name "Eristalis tenax (Linnaeus, 1758)"
Taxon rank	species
Name match metric	Taxon GUID match The match was based on the supplied taxon concept ID rather than the scientific name.
Species	Eristalis tenax
Genus	Eristalis
Family	Syrphidae
Order	Diptera
Class	Insecta
Phylum	Arthropoda
Kingdom	Animalia
Taxon ID	NBNSYS0000007054
Taxonomic issue	No issues
Habitat taxon	terrestrial\|freshwater
Establishment means taxon	Native
Scientific name authorship	(Linnaeus, 1758)

Geospatial

Country	United Kingdom
State/Province	Wales
Locality	Vc 52 PLAS CADNANT
Latitude (WGS84)	53.2344318
Longitude (WGS84)	-4.1604461
Geodetic datum	EPSG:4326
Coordinate precision	Unknown
Coordinate uncertainty in meters	50.0
Grid size in meters	100
Grid reference	SH559730

User flagged issues

Data quality tests

Test name	Result
Geodetic datum assumed WGS84	Warning
Country inferred from coordinates	Warning
Grid reference calculated using latitude and longitude	Warning
Show/Hide 14 passed properties
Basis of record not supplied	Passed
Basis of record badly formed	Passed
Invalid collection date	Passed
Incomplete collection date	Passed
First of the month	Passed
Data are generalised	Passed
Name not supplied	Passed
Name not recognised	Passed
Decimal coordinates not supplied	Passed
Zero latitude	Passed
Coordinate uncertainty not valid	Passed
Coordinate uncertainty not specified	Passed
Location not supplied	Passed
Missing geodetic datum	Passed
Show/Hide 2 missing properties
Missing name of person who identified the specimen/observation	Missing
Missing catalogue number	Missing
Show/Hide 73 tests that have not been run
Coordinates dont match supplied state	Unchecked (lack of data)
Coordinates are out of range for species	Unchecked (lack of data)
Cultivated / escapee	Unchecked (lack of data)
Coordinates are transposed	Unchecked (lack of data)
Outside expert range for species	Unchecked (lack of data)
Coordinates converted from UTM	Unchecked (lack of data)
Coordinate precision not valid	Unchecked (lack of data)
Type status not recognised	Unchecked (lack of data)
Missing georeferenced verification status	Unchecked (lack of data)
Depth out of range	Unchecked (lack of data)
Badly formed altitude	Unchecked (lack of data)
Suspected outlier	Unchecked (lack of data)
Collection code not recognised	Unchecked (lack of data)
Latitude is negated	Unchecked (lack of data)
Altitude out of range	Unchecked (lack of data)
Habitat incorrect for species	Unchecked (lack of data)
Supplied country not recognised	Unchecked (lack of data)
Coordinates derived from verbatim coordinates	Unchecked (lack of data)
Missing identification references	Unchecked (lack of data)
Coordinates centre of country	Unchecked (lack of data)
unrecognisedOccurrenceStatus	Unchecked (lack of data)
First of the century	Unchecked (lack of data)
Image URL invalid	Unchecked (lack of data)
Media unrepresentative	Unchecked (lack of data)
Unable to convert UTM coordinates	Unchecked (lack of data)
Resource taxonomic scope mismatch	Unchecked (lack of data)
Missing taxonomic rank	Unchecked (lack of data)
Min and max depth reversed	Unchecked (lack of data)
Coordinates converted to WGS84	Unchecked (lack of data)
Invalid geodetic datum	Unchecked (lack of data)
Georeferenced after occurrence date	Unchecked (lack of data)
Missing identification date	Unchecked (lack of data)
Zero longitude	Unchecked (lack of data)
Supplied coordinates are zero	Unchecked (lack of data)
Collector name unparseable	Unchecked (lack of data)
coordinatesNotCentreOfGrid	Unchecked (lack of data)
No collection date supplied	Unchecked (lack of data)
Missing name of person who georeferenced the occurrence	Unchecked (lack of data)
Invalid scientific name	Unchecked (lack of data)
Unrecognised ID verification status	Unchecked (lack of data)
Supplied coordinates centre of state	Unchecked (lack of data)
Longitude is negated	Unchecked (lack of data)
Kingdom not recognised	Unchecked (lack of data)
Identification date before occurrence date	Unchecked (lack of data)
Homonym issues with supplied name	Unchecked (lack of data)
Missing georeferenced sources	Unchecked (lack of data)
Missing georeferenced protocol	Unchecked (lack of data)
First of the year	Unchecked (lack of data)
Depth value non-numeric	Unchecked (lack of data)
Latitude Longitude calculated from grid reference	Unchecked (lack of data)
Precision / range mismatch	Unchecked (lack of data)
Possible duplicate record	Unchecked (lack of data)
Altitude value non-numeric	Unchecked (lack of data)
Altitude value supplied in feet	Unchecked (lack of data)
Day and month transposed	Unchecked (lack of data)
Missing an identification qualifier	Unchecked (lack of data)
Higher taxonomy missing	Unchecked (lack of data)
Media unrepresentative for taxon	Unchecked (lack of data)
Date precision invalid	Unchecked (lack of data)
Unparseable verbatim coordinates	Unchecked (lack of data)
Coordinate precision and uncertainty transposed	Unchecked (lack of data)
Depth value supplied in feet	Unchecked (lack of data)
Decimal latitude/longitude conversion failed	Unchecked (lack of data)
Unrecognized geodetic datum	Unchecked (lack of data)
Occurrence status assumed to be present	Unchecked (lack of data)
Missing coordinate precision	Unchecked (lack of data)
Name not in national checklists	Unchecked (lack of data)
Institution code not recognised	Unchecked (lack of data)
Coordinates dont match supplied country	Unchecked (lack of data)
Taxonomic issue	Unchecked (lack of data)
Missing identification verification status	Unchecked (lack of data)
Min and max altitude reversed	Unchecked (lack of data)
Missing georeference date	Unchecked (lack of data)

Additional political boundaries information

GB
Districts, Boroughs and Unitary Authorities (Great Britain)	Sir Ynys Mon - Isle of Anglesey
GB countries	Wales
Ordnance Survey Grids - 100km	SH
Ordnance Survey Grids - 10km	SH57
Ordnance Survey Grids - 50km	SHNE
Watsonian Vice Counties (GB)	Anglesey
Watsonian Vice Counties – 12 mile (GB)	Anglesey
Watsonian Vice Counties – 3 mile (GB)	Anglesey
UK
Countries with sea areas	Wales
Local Environmental Records Centre Boundaries of the UK	Cofnod - North Wales Environmental Information Service
National Parks (UK) - 7075m buffer	Snowdonia
UK, IoM, Channel Islands
Hexagonal grid for reporting - 10km	14612
Square grid for reporting - 10km	20200
Wales
Ancient Woodland Inventory 2011 (Wales)	Ancient Semi Natural Woodland
Habitat Network: Woodland Level 2 (Priority) (Wales)	Habitat Network: Woodland Level 2 (Priority) (Wales)
Local Authorities (Wales)	Sir Ynys Mon - Isle of Anglesey
National Forest Inventory Woodland Wales 2018	Broadleaved
Sites of Special Scientific Interest (Wales)	CADNANT DINGLE
Terrestrial Phase 1 Habitat Survey (Vegetation Voronoi) (Wales)	A.1.1.1 Semi-natural broadleaved woodland
World base layer	United Kingdom

Group	Field Name	Original Value	Processed Value
Classification	Species		Eristalis tenax
	Name match metric		taxonIdMatch
	Scientific name	Eristalis tenax (Linnaeus, 1758)	Eristalis tenax
	Class		Insecta
	Genus id		NBNSYS0000006208
	Taxon concept ID		NBNSYS0000007054
	Kingdom id		NBNSYS0100001342
	Left		56932
	Habitat taxon		terrestrial\|freshwater
	Phylum		Arthropoda
	Kingdom		Animalia
	Class id		NBNSYS0000160231
	Genus		Eristalis
	Phylum id		NHMSYS0020470198
	Order		Diptera
	Taxon rank		species
	Establishment means taxon		Native
	Order id		NHMSYS0000841073
	Taxonomic issue		["noIssue"]
	Species id		NBNSYS0000007054
	Family id		NBNSYS0000040188
	Taxon ID	NBNSYS0000007054
	Family		Syrphidae
	Taxon rank id		7000
	Scientific name authorship		(Linnaeus, 1758)
	Right		56932
Event	Date precision		Day
	Event date	2025-03-30	2025-03-30
	Year		2025
	Day		30
	Month		03
	Event ID	28795806
Identification	Abcd identification qualifier		Not provided
	Identification qualifier		Not provided
	Identification verification status	Accepted - considered correct	Accepted - considered correct
Occurrence	Occurrence ID	40570362
	Basis of record	HumanObservation	HumanObservation
	Recorded by	Thomas Mawdsley	Mawdsley, T. Thomas
	Sex	mixed
	Rights holder	Biological Records Centre
	Individual count	6–20
	Dataset name	Hoverfly records verified via iRecord
	Other catalog numbers	0195ee00-281e-7000-a5b7-eb898438ce52
	Occurrence remarks	Basking on shrub in wet wooland
	Life stage	adult
	Occurrence status	present	present
	Collection code	iRecord \| App
Attribution	Data resource		Hoverfly records verified via iRecord
	Data provider uid		dp77
	License		CC-BY
	Data Resource ID	dr3370
	Data partner		Biological Records Centre
Location	Decimal latitude	53.2344318	53.2344318
	Grid size in meters		100
	Coordinate uncertainty in meters	50	50.0
	Country		United Kingdom
	Grid reference		SH559730
	State province		Wales
	Decimal longitude	-4.1604461	-4.1604461
	Locality	Vc 52 PLAS CADNANT	Vc 52 PLAS CADNANT
	Geodetic datum		EPSG:4326

Occurrence record: 40570362

Overview

Dataset

Abundance

Organism

Event

Taxonomy

Geospatial

User flagged issues

Data quality tests

Additional political boundaries information

- flagged by