Aeshna walkeri

Kennedy, 1917 · species

image placeholder — illustration coming later

Animalia/Arthropoda/Insecta/Odonata/Aeshnidae/Aeshna

At a glance

Occurrence records502

Data sources7

Biological traits0

DNA specimens0

eDNA detections0

Sources7 archives

Databases and archives Aeshna walkeri's data was compiled from.

WikipediaWikimedia Foundation4 languages↗

BioWikiNetmultilingual Wikipediamultilingual↗

GBIFGlobal Biodiversity Information Facility502 records↗

Open Tree of LifeOpenTreephylogeny backbone↗

Tree of SexTree of Sex Consortiumgenome & karyotype↗

WikidataWikimedia Foundationstructured facts↗

GLoBIGlobal Biotic Interactionsbiotic interactions↗

On this page3 sections

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

NarrativeWikipediaarticle

Occurrence & distributionGBIF502 records

Genome at a glanceTreeOfSex2n = 28

01Narrative

Aeshna walkeri, or Walker's darner, is a species of darner in the dragonfly family Aeshnidae. It is found in Central America and North America. The IUCN conservation status of Aeshna walkeri is "LC", least concern, with no immediate threat to the species' survival. The population is stable. The IUCN status was reviewed in 2017.

No narrative description available for this taxon yet.

02Traits & measurements

No structured trait data for this taxon yet.

05DNA & barcodingmolecular

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 Aeshna walkeri has left across the world's sequence archives.

At a glance

06Genome at a glanceTreeOfSex

The complete instruction manual Aeshna walkeri carries — its genome. We read it from three angles — how big it is, how the DNA is packed into chromosomes, and how completely it has been sequenced — and explain how to read each value as you go.

Chromosomes & ploidyhow the DNA is packaged

2n is the full chromosome count in a normal body cell; n is a gamete (egg or sperm), which carries half. Ploidy is how many complete chromosome sets each cell holds — 2× (diploid) is typical for animals, while higher levels (polyploidy) are common in plants. Click any value below to see the underlying records and sources.

Chromosomes2n = 28 n = 14

Chromosome-count records — grouped by value · 2n = full set, n = gamete · click a value for sources & references

2n 281×TreeOfSex · invert

TreeOfSex · invert — Cruden RW (1968) Chromosome numbers of some North American dragonflies (Odonata). Canadian Journal of Genetics and Cytology 10: 200-214. ↗

08Occurrence & distribution

Record type502 records

Wild obs. + sensor375

Museum / vouchered127

Range

Area of Occupancy AOO1 088 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 accuracy95% within 1 km

≤100 m 179≤1 km 48≤10 km 9>10 km 4

240 georeferenced · 135 without coordinates

Open the mapobservation + sensor375

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 accuracy59% within 1 km

≤100 m 6≤1 km 14≤10 km 8>10 km 6

34 georeferenced · 93 without coordinates

Open the institutions mapphysical evidence127

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 institutions5 of 10 geolocated

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

Institution	Specimens
Odonata Centrallocation not on record	58
San Francisco, US	15
CASlocation not on record	6
Washington, US	6
University Park, US	5
UCBMElocation not on record	4
Cornell University Insect Collectionlocation not on record	3
Essig Museum of Entomologylocation not on record	2
San Diego, US	1
Santa Cruz, US	1

10 institutions · 101 of 127 vouchered records shown · 26 without an institution code

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