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 Magicicada cassini has left across the world's sequence archives.
At a glance
DNA specimens31
BINs1
Marker genes1
eDNA detections36
Countries1
The DNA barcodethe species' typical barcode, built from every sequenced specimen
COI-5P1 536 bp consensus31 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. 99% of positions are identical in every specimen.
Where individuals differ — all 17 variable positions, in barcode order
Each circle is a barcode variant; bigger = more specimens, colour = region. Lines join the most similar variants and the tick marks count the mutations between them — a tight cluster is one “dialect”, a long line a more divergent lineage. Click a circle to list its actual specimens.
Diversity (π)0.52%
Haplotypes12
BIN1
Most divergent pair0.98%
N.America
Marker genes sequenced
★ 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
08Occurrence & distribution
Record type5 529 records
Wild obs. + sensor5 048
Museum / vouchered481
Origin
Native3
Range
Area of Occupancy AOO6 640 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 accuracy88% within 1 km
≤100 m 3 094≤1 km 528≤10 km 82>10 km 428
4 132 georeferenced · 916 without coordinates
Open the mapobservation + sensor5 048
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 accuracy19% within 1 km
≤100 m 8≤1 km 60≤10 km 239>10 km 58
365 georeferenced · 116 without coordinates
Open the institutions mapphysical evidence481
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 15 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
East Lansing, US
143
Provo, US
124
Wuzhou, CN
97
Mississippi State, US
33
Colorado State Universitylocation not on record
20
University of Central Floridalocation not on record
17
OSUClocation not on record
15
Natural History Museum of Utahlocation not on record
9
Sam Noble Oklahoma Museum of Natural Historylocation not on record
8
Champaign, US
4
Washington, US
3
WIlocation not on record
2
University Park, US
2
Toronto, CA
1
Centre for Biodiversity Genomicslocation not on record
1
15 institutions · 479 of 481 vouchered records shown · 2 without an institution code
09Environmental DNA36 detections
Where the DNA of Magicicada cassini 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 found36
Studies independent surveys1
Countries1
Signal confidence: weakweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 36 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 median20.2 °C 20.2–20.2
Seasonal swing summer↔winter25.7 °C
Max temp (day)25.9 °C
Min temp (night)15.9 °C
Precipitation140 mm/mo
Air humidity57.4 %
Moisture balance-27.2 mm/mo
Vapour deficit1,009 Pa
Wind speed5.00 m/s
Cloud cover39.1 %
CHELSA 1981–2010, ~9 km grid, at location & month of 1 detection point · 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.
