Agelastica alni
(Linnaeus, 1758) · speciesAt a glance
Sources11 archives
Databases and archives Agelastica alni's data was compiled from.
WikipediaWikimedia Foundation8 languages↗
BioWikiNetmultilingual Wikipediamultilingual↗
GBIFGlobal Biodiversity Information Facility79 029 records↗
ENAEuropean Nucleotide Archive · EMBL-EBI114 eDNA detections↗
BOLD SystemsCentre for Biodiversity Genomics99 specimens↗
Open Tree of LifeOpenTreephylogeny backbone↗
GoaTGenomes on a Tree · Sangergenome & karyotype↗
NCBIUS National Library of Medicinegenome & karyotype↗
Paleobiology DatabasePBDB consortiumfossil record↗
Catalogue of LifeCOLtaxonomy↗
GLoBIGlobal Biotic Interactionsbiotic interactions↗Every layer below draws on the sources above — open one to explore it, or use ← → to move between tabs.
Agelastica alni, the alder leaf beetle, is a species of leaf beetle (Chrysomelidae) in the genus Agelastica. Agelastica alni is distributed in Europe, the Caucasus, Siberia, north-eastern Kazakhstan, and in the 19th century was introduced to the United States. The beetle and the beetle's larval host is the grey or speckled alder (Alnus incana) and to a lesser extent black alder (Alnus glutinosa), but it will also be found on hazel, birch or hornbeam if there is a shortage of food. It causes large holes and gaps in leaves from the end of April onwards, which are produced by the larvae in the first two stages, but the main damage is produced by larvae in the third stage. Previously rare, and considered extinct in the UK, since being found in Manchester in 2004 it appears to be on the increase in the North West of England. Its range has been extending and it was found in Nottinghamshire and Hampshire in 2014 and in North Wales in 2018.
No narrative description available for this taxon yet.
Diet & foraging2
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 Agelastica alni has left across the world's sequence archives.
At a glance
★ 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.
The complete instruction manual Agelastica alni 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.
Genome sizehow big the whole instruction manual is
Measured in base pairs (bp) — the individual letters of DNA (human ≈ 3.2 Gb, a bacterium a few million). The chart places this genome on a logarithmic scale — each step to the right is ten times bigger — among reference organisms. Across species a bigger genome loosely tracks with larger cells, slower growth and lower-energy lifestyles (powered flight favours small genomes) — yet it does not imply more genes or a more advanced organism (the long-standing C-value paradox).
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.
2n 121×GoaT · Animal Chromosome Counts Database
2n 251×GoaT · Animal Chromosome Counts Database
2n 261×GoaT · Animal Chromosome Counts Database
2n 271×GoaT · Animal Chromosome Counts Database
2n 281×GoaT · Animal Chromosome Counts Database
2n 291×GoaT · Animal Chromosome Counts Database
2n 301×GoaT · Animal Chromosome Counts Database
Sequencing statusassembly quality — how far to trust these numbers
Assembly level tells you how finished the sequence is — from fragmented contigs, through scaffolds, up to a full chromosome-level assembly. BUSCO % estimates completeness: the share of genes expected to be present that were actually found. These describe the data quality, not the organism.
How far back this lineage goes — and how we know. Everything here is measured in Ma, short for “mega-annum”: millions of years ago. The chart reads left to right like a calendar of the Earth, from the deep past on the left to today at the right edgetop to bottom like a core drilled through the Earth, from the deep past at the top down to today at the bottom.
At a glance
When this lineage existed
How to read this: the coloured strip along the bottomdown the left is the geological calendar — the standard epochs (Pliocene, Pleistocene…) every museum uses, shown so you can see which chapter of Earth's history this lineage lived in. This lineage is a young one, so the strip is zoomed in to epochs — the finer subdivisions inside a period. The solid bar is the fossil range: the span between the oldest and the youngest fossil that palaeontologists have assigned to Agelastica alni. Above itBeside it, each dot is one dated fossil find — few enough to count, so they are drawn individually rather than as a graph.
How it livedPBDB
Record type79 030 records
Range
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
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.
Wildobservation + sensor
Human sightings and records, or camera-trap / sensor detections — someone (or a device) saw or captured the species in the wild.
Holding institutions13 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 |
|---|---|
| Tartu, EE | 293 |
| Vitoria, ES | 275 |
| SLU Artdatabankenlocation not on record | 156 |
| Philadelphia, US | 150 |
| Helsinki, FI | 105 |
| Muzeum Górnośląskie w Bytomiulocation not on record | 100 |
| Natural History Museum Rotterdamlocation not on record | 78 |
| NHMOlocation not on record | 73 |
| Tilburg, NL | 46 |
| Salzburg, AT | 46 |
| Laboratorium voor Microbiologie der Landbouwhogeschoollocation not on record | 37 |
| NTNU-VMlocation not on record | 34 |
| Muzeum i Instytut Zoologii Polskiej Akademii Nauklocation not on record | 29 |
| Olocation not on record | 24 |
| Provincia di Livornolocation not on record | 23 |
| Trondheim, NO | 22 |
| Tromsø, NO | 19 |
| South Kensington, GB | 17 |
| IFR-DNFlocation not on record | 17 |
| Winterthur, CH | 16 |
| Kuopio, FI | 12 |
| TMPMlocation not on record | 10 |
| Ugentlocation not on record | 9 |
| neflocation not on record | 8 |
| BioFokuslocation not on record | 8 |
| ZMAAlocation not on record | 8 |
| Natural History Museum, Londonlocation not on record | 6 |
| MZLUlocation not on record | 5 |
| Sam Noble Oklahoma Museum of Natural Historylocation not on record | 4 |
| Adam Mickiewicz University in Poznańlocation not on record | 4 |
| ZSMlocation not on record | 4 |
| Paris, FR | 3 |
| Tallinn, EE | 2 |
| Metsähallituslocation not on record | 1 |
| Universita degli Studi di Milano, Dept. of Agrifood & Urban Systems Protection, Lab Entomologia Molecolarelocation not on record | 1 |
| NMOKlocation not on record | 1 |
| Bavarian State Collection of Zoologylocation not on record | 1 |
Where the DNA of Agelastica alni 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
Where its DNA was found
How strong is each trace?
Modelled climatemodelled
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.