Janolus longidentatus, the medallion silvertip nudibranch, is a spectacular-looking species of nudibranch, or sea slug. It is a marine gastropod mollusc in the family Proctonotidae. Apart from striking differences in the egg ribbons, individuals of this species are externally not distinguishable from the Cape silvertip nudibranch.
No narrative description available for this taxon yet.
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 Antiopella longidentata has left across the world's sequence archives.
At a glance
eDNA detections4
Countries1
08Occurrence & distribution
Record type85 records
Wild obs. + sensor72
Museum / vouchered13
Range
Area of Occupancy AOO88 km²
Depth
0–200 m sunlit9
200–1000 m twilight0
1–4 km midnight0
>4 km abyssal0
median 5 m · max 20 m · 9 records with depth
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Coordinate accuracy97% within 1 km
≤100 m 42≤1 km 14≤10 km 2
58 georeferenced · 14 without coordinates
Open the mapobservation + sensor72
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 accuracy13% within 1 km
≤1 km 1≤10 km 5>10 km 2
8 georeferenced · 5 without coordinates
Open the institutions mapphysical evidence13
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
09Environmental DNA4 detections
Where the DNA of Antiopella longidentata 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 median18.8 °C 18.8–18.8
Seasonal swing summer↔winter15.6 °C
Max temp (day)26.6 °C
Min temp (night)11.7 °C
Precipitation34.5 mm/mo
Air humidity48.3 %
Moisture balance-98.6 mm/mo
Vapour deficit1,186 Pa
Wind speed2.90 m/s
Cloud cover16.3 %
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.
