Achelia assimilis

(Haswell, 1885) · species

image placeholder — illustration coming later

Animalia/Arthropoda/Pycnogonida/Pantopoda/Ammotheidae/Achelia

At a glance

Occurrence records568

Data sources8

Biological traits6

DNA specimens25

eDNA detections19

Sources8 archives

Databases and archives Achelia assimilis's data was compiled from.

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility354 records↗

OBISOcean Biodiversity Information System214 records↗

ENAEuropean Nucleotide Archive · EMBL-EBI19 eDNA detections↗

BOLD SystemsCentre for Biodiversity Genomics25 specimens↗

Open Tree of LifeOpenTreephylogeny backbone↗

Catalogue of LifeCOLtaxonomy↗

GLoBIGlobal Biotic Interactionsbiotic interactions↗

On this page5 sections

Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.

NarrativeWikipediaarticle

Traits & measurements1 literature sources6 traits

Occurrence & distributionGBIF · OBIS568 records

Environmental DNA1 datasets · 1 countries19 detections

DNA & barcodingBOLD25 specimens

01Narrative

Achelia assimilis is een zeespin uit de familie Ammotheidae. De soort behoort tot het geslacht Achelia. Achelia assimilis werd in 1885 voor het eerst wetenschappelijk beschreven door Haswell.

No narrative description available for this taxon yet.

02Traits & measurements

SourcesSeaLifeBase

Size & morphology1

Body length0.14 cm

Habitat & environment2

Habitat saltwateryes

Habitat zonereef-associated

Other traits3

Depth max910 m

Depth min0 m

Vulnerability10

05DNA & barcoding25 specimens

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 Achelia assimilis has left across the world's sequence archives.

At a glance

DNA specimens25

BINs5

Marker genes4

eDNA detections19

Countries2

The DNA barcodethe species' typical barcode, built from every sequenced specimen

COI-5P658 bp consensus16 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. 76% of positions are identical in every specimen.

Where individuals differ — all 161 variable positions, in barcode order

4Gvariable

10Tvariable

19Tmostly conserved

22Gvariable

25Avariable

28Amostly conserved

31Tvariable

34Amostly conserved

37Gvariable

38Gvariable

40Gvariable

46Tmostly conserved

47Tmostly conserved

49Tmostly conserved

50Tmostly conserved

55Tvariable

56Cmostly conserved

58Tmostly conserved

59Tmostly conserved

70Tmostly conserved

74Tmostly conserved

79Avariable

82Cvariable

85Amostly conserved

88Tvariable

91Amostly conserved

92Tmostly conserved

100Tvariable

106Cvariable

112Tmostly conserved

115Tvariable

127Amostly conserved

133Tvariable

136Tmostly conserved

139Cvariable

143Amostly conserved

145Cvariable

163Cvariable

166Amostly conserved

190Gvariable

193Tmostly conserved

196Avariable

197Tmostly conserved

199Amostly conserved

202Tvariable

206Tmostly conserved

208Amostly conserved

215Gmostly conserved

220Tvariable

223Amostly conserved

226Tmostly conserved

238Tmostly conserved

241Tmostly conserved

250Tmostly conserved

262Amostly conserved

263Tvariable

268Tvariable

271Cvariable

274Avariable

277Tvariable

281Amostly conserved

283Amostly conserved

284Tmostly conserved

286Amostly conserved

290Cvariable

292Amostly conserved

295Tmostly conserved

298Tmostly conserved

301Tvariable

302Tmostly conserved

313Amostly conserved

316Tvariable

319Amostly conserved

322Gvariable

325Amostly conserved

328Tvariable

334Tmostly conserved

337Avariable

343Ahighly variable

346Tvariable

347Cmostly conserved

349Tmostly conserved

352Avariable

353Tmostly conserved

358Tmostly conserved

362Gmostly conserved

370Tmostly conserved

373Gmostly conserved

374Tmostly conserved

376Tvariable

382Gvariable

385Tmostly conserved

388Amostly conserved

391Amostly conserved

394Tmostly conserved

400Tmostly conserved

401Tmostly conserved

415Tmostly conserved

418Tmostly conserved

421Amostly conserved

424Amostly conserved

428Tmostly conserved

430Avariable

433Tvariable

436Tvariable

442Tmostly conserved

451Tmostly conserved

457Tmostly conserved

460Amostly conserved

466Avariable

469Tmostly conserved

470Amostly conserved

471Gmostly conserved

472Avariable

475Amostly conserved

478Gvariable

483Amostly conserved

484Amostly conserved

487Gmostly conserved

491Amostly conserved

+41 more variable positions not shown

AACGATATATTTAATTTTTGGGGCATGAGCTGCAATGGTGGGAACTTCTTTAAGTCTTTTAATTCGTACTGAATTAGGAACCCCATCTTC …

Variant network

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)8.9%

Haplotypes7

BINs4

Most divergent pair12.5%

S.America

Closest relatives by DNA barcode

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.

Ammothea longispinasame family14.9%Ammothea calmanisame family15.3%Ammothea hilgendorfisame family16.3%Ammothea carolinensissame family16.6%

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-3P★COI-5P18S-3P18S-5P

animal barcoderibosomal

08Occurrence & distribution

Record type568 records

Wild obs. + sensor23

Museum / vouchered429

Other116

Range

Area of Occupancy AOO824 km²

Depth

0–200 m sunlit69

200–1000 m twilight15

1–4 km midnight0

>4 km abyssal0

median 52.5 m · max 886.5 m · 84 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 accuracy100% within 1 km

≤1 km 6

6 georeferenced · 17 without coordinates

Open the mapobservation + sensor23

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 accuracy70% within 1 km

≤100 m 75≤1 km 94≤10 km 65>10 km 9

243 georeferenced · 186 without coordinates

Open the institutions mapphysical evidence429

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 20 geolocated

Institutions and collections holding physical, vouchered specimens of this species — click a row to fly to it on the map.

Institution	Specimens
Sydney, AU	165
Museum and Art Gallery of the Northern Territorylocation not on record	22
Natick, US	16
Earth Sciences New Zealandlocation not on record	16
Washington, US	15
Museums Victorialocation not on record	9
IBIOMARlocation not on record	4
Paris, FR	4
Bavarian State Collection of Zoologylocation not on record	4
CASlocation not on record	2
Auckland, NZ	2
DOI/NPS, Salem Maritime National Historic Sitelocation not on record	2
Cambridge, US	1
Stockholm, SE	1
Universidad Austral de Chilelocation not on record	1
Western Australian Museumlocation not on record	1
Bonn, DE	1
Tasmanian Museum & Art Gallerylocation not on record	1
SCSDlocation not on record	1
University of Oslo (UiO)location not on record	1

20 institutions · 269 of 429 vouchered records shown · 16 without an institution code

09Environmental DNA19 detections

Where the DNA of Achelia assimilis 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 found19

Studies independent surveys1

Countries1

Signal confidence: weakweighed across independent studies, places & mapped detections

Where its DNA was found

0 of 19 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 median14.1 °C 6.40–14.2

Seasonal swing summer↔winter9.70 °C

Max temp (day)15.4 °C 8.70–18.0

Min temp (night)10.1 °C 2.70–12.9

Precipitation220 mm/mo 91.1–312

Air humidity63.4 % 63.1–67.3

Moisture balance236 mm/mo

Vapour deficit590 Pa 318–593

Wind speed4.80 m/s

Cloud cover15.7 % 15.1–32.5

CHELSA 1981–2010, ~9 km grid, at location & month of 15 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.

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