Korynetes caeruleus also known as the steely blue beetle is a predatory beetle in the family Cleridae. The adult is between 3.5 and long, has reddish-brown antennae, a scantily spotted brown head and neck shield, and shiny blue elytra. The larvae live in tunnelled wood that has been infested by the common furniture beetle and the deathwatch beetle and they feed on the larvae of these wood-damaging insects. The presence of Korynetes caeruleus indicates a heavy infestation of either woodboring insect. Adult females mate and lay eggs near or just inside exit holes, then die. It is not to be confused with Necrobia rufipes, which is also a steely blue beetle in the family Cleridae. Both beetles have a significance in forensic entomology but for different reasons.
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 Korynetes caeruleus has left across the world's sequence archives.
At a glance
DNA specimens11
BINs1
Marker genes3
eDNA detections14
Countries4
The DNA barcodethe species' typical barcode, built from every sequenced specimen
COI-5P658 bp consensus8 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. 100% of positions are identical in every specimen.
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-3P★COI-5P18S-5P
animal barcoderibosomal
08Occurrence & distribution
Record type2 040 records
Wild obs. + sensor1 179
Museum / vouchered847
Fossil2
Other12
Origin
Native94
Range
Area of Occupancy AOO4 156 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 accuracy82% within 1 km
≤100 m 716≤1 km 195≤10 km 198>10 km 5
1 114 georeferenced · 65 without coordinates
Open the mapobservation + sensor1 179
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 accuracy32% within 1 km
≤100 m 109≤1 km 131≤10 km 490>10 km 9
739 georeferenced · 108 without coordinates
Open the institutions mapphysical evidence847
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 institutions15 of 37 geolocated
Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.
Institution
Specimens
Brussels, BE
213
SLU Artdatabankenlocation not on record
106
Museum Ludovicae Ulricae, Zoology Institute of the University of Uppsalalocation not on record
84
Muzeum Górnośląskie w Bytomiulocation not on record
49
Zürich, CH
36
Salzburg, AT
31
NTNU-VMlocation not on record
25
Trondheim, NO
25
Olocation not on record
22
Natural History Museum Rotterdamlocation not on record
19
MZLUlocation not on record
18
NHMOlocation not on record
17
NMOKlocation not on record
13
Museo civico di Storia naturale Giacomo Doria di Genova | Giacomo Doria Natural History Museum in Genoalocation not on record
10
BioFokuslocation not on record
10
NCMGlocation not on record
9
Paro, BT
8
Tilburg, NL
8
Helsinki, FI
8
neflocation not on record
7
Uniwersytet Wrocławskilocation not on record
7
Bern, CH
6
Frauenfeld, CH
6
Copenhagen, DK
5
Geneva, CH
5
Naturama Aargaulocation not on record
4
Naturmuseum St. Gallenlocation not on record
4
ZSMlocation not on record
3
LSMlocation not on record
3
Fribourg, CH
2
Sion, CH
2
Museo civico Brancaleoni di Piobbicolocation not on record
2
Dhaka, BD
2
Provincia di Livornolocation not on record
1
CBDClocation not on record
1
Naturmuseum Solothurnlocation not on record
1
Winterthur, CH
1
37 institutions · 773 of 847 vouchered records shown · 73 without an institution code
09Environmental DNA14 detections
Where the DNA of Korynetes caeruleus 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 found14
Studies independent surveys2
Countries4
Signal confidence: moderateweighed across independent studies, places & mapped detections
Where its DNA was found
0 of 14 detections have coordinates
Open the map4 countries0
on old wood
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 median11.3 °C 8.30–14.6
Seasonal swing summer↔winter16.9 °C
Max temp (day)14.5 °C 11.9–18.5
Min temp (night)7.10 °C 4.60–11.5
Precipitation60.7 mm/mo 55.6–99.3
Air humidity62.1 % 60.0–64.7
Moisture balance-8.00 mm/mo -58.8–-4.10
Vapour deficit547 Pa 449–665
Wind speed3.90 m/s 3.40–4.20
Cloud cover42.2 % 35.4–47.6
CHELSA 1981–2010, ~9 km grid, at location & month of 12 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.
