A DNA barcode is a short, standardised stretch of genes that works like a fingerprint — enough to tell one species from another. Below is the molecular trace Aequidens diadema has left across the world's sequence archives.
At a glance
DNA specimens4
BINs2
Marker genes1
eDNA detections4
Countries1
The DNA barcodethe species' typical barcode, built from every sequenced specimen
COI-5P505 bp consensus4 specimens
ACGT
▸ drag or hover over the strip to read any position — letter and how much it varies
Violet ticks below the strip = positions where individuals differ; flat = the species' unchanging signature. 90% of positions are identical in every specimen.
Diversity (π)5.1%
Haplotypes1
BINs2
Where individuals differ — all 52 variable positions, in barcode order
The species whose COI barcode is most similar to this one — a quick “who is this most like”. The percentage is how much the barcode differs; it approximates, but is not, the full evolutionary tree.
★ the standard DNA barcode for this group — the short region actually read to tell this species apart. The rest are extra genes sequenced along the way.
★COI-5P
animal barcode
07Deep time~0.97 Ma lineage
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
DNA clock origin0.97 Ma TimeTree
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The orange marker is the DNA clock: DNA accumulates mutations at a roughly steady rate, so comparing this species' DNA with its relatives estimates when the lineage split off — independently of any fossil.
DNA clock origin
08Occurrence & distribution
Record type297 records
Wild obs. + sensor29
Museum / vouchered268
Origin
Native2
Range
Area of Occupancy AOO880 km²
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy67% within 1 km
≤100 m 2>10 km 1
3 georeferenced · 26 without coordinates
Open the mapobservation + sensor29
Museum / Voucheredphysical evidence
Backed by a physical specimen — a herbarium sheet, sample or voucher held in a collection. “Vouchered” means supported by material evidence, not just an observation.
Coordinate accuracy60% within 1 km
≤1 km 9≤10 km 4>10 km 2
15 georeferenced · 253 without coordinates
Open the institutions mapphysical evidence268
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
10Collections & institutions
Holding institutions8 of 21 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Instituto de Biodiversidad de Venezuela - INBIOlocation not on record
103
Instituto de Investigación de Recursos Biológicos Alexander von Humboldt (IAvH)location not on record
46
University of Nebraskalocation not on record
18
Champaign, US
17
Stockholm, SE
14
PUC-RSlocation not on record
11
Universidad del Tolima (UT)location not on record
10
Chicago, US
8
Montgomery, US
6
Washington, US
5
Museu de Zoologia da Universidade de Sao Paulolocation not on record
4
Instituto para la Investigación y la Preservación del Patrimonio Cultural y Natural del Valle del Cauca - INCIVAlocation not on record
4
Toronto, CA
4
Instituto Nacional de Pesquisas da Amazônia (INPA)location not on record
4
CASlocation not on record
3
Florida Museum of Natural History- Zoology, Paleontology & Paleobotanylocation not on record
2
Texas Cooperative Wildlife Collectionlocation not on record
2
Cambridge, US
1
Geneva, CH
1
SNSB-Zoologische Staatssammlung Münchenlocation not on record
1
Universidad de La Salle (La Salle)location not on record
1
21 institutions · 265 of 268 vouchered records shown · 3 without an institution code
09Environmental DNA4 detections
Where the DNA of Aequidens diadema was picked up in samples of water, soil or air — nobody saw the organism, only its DNA left behind. A trace is a clue that the species was near, not a confirmed sighting.
Signal
Detections DNA found4
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 4 detections have coordinates
Open the map1 country0
How strong is each trace?
DNA read depthRead counts were not reported for this species — the map shows presence only, not how strong each trace was.
Modelled climatemodelled
−15°Ctemperature across detection sites+40°C
Temperature median26.0 °C 26.0–26.0
Seasonal swing summer↔winter1.30 °C
Max temp (day)29.2 °C 29.3–29.2
Min temp (night)23.6 °C
Precipitation292 mm/mo
Air humidity71.6 %
Moisture balance158 mm/mo
Vapour deficit950 Pa
Wind speed0.8 m/s
Cloud cover57.5 %
CHELSA 1981–2010, ~9 km grid, at location & month of 3 detection points · median with p10–p90 · reflects where sampling happened, not only the true niche
How to read this: each dot is one detection of this species' DNA in an environmental sample. The confidence meter weighs how many independent studies and places back up the signal — one detection in one study is a hint; many across several studies is solid. Records dated before 2008 (when eDNA methods began) are treated as likely mislabeled and left off the map.
