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iNat·638879GenusInsecta5 field observations
  1. Animals
  2. ›Arthropods
  3. ›Hexapods
  4. ›Insects
  5. ›Winged and Once-winged Insects
  6. ›Ants, Bees, Wasps, and Sawflies
  7. ›Narrow-waisted Wasps, Ants, and Bees
  8. ›Ichneumonid and Braconid Wasps
  9. ›Ichneumonid Wasps
  10. ›Ctenopelmatinae
  11. ›Pionini
Pion
Plate 1 of 1. (c) Jan Grathwohl，保留部分权利（CC BY-NC）, 由 Jan Grathwohl 上传 · via iNaturalist

Pion

In particle physics, a pion (/ˈpaɪ.ɒn/, PIE-on) or pi meson, denoted with the Greek letter pi (π), is any of three subatomic particles: π0, π+, and π−. Each pion consists of a quark and an antiquark and is therefore a meson. Pions are the lightest mesons and, more generally, the lightest hadrons. They are unstable, with the charged pions π+ and π− decaying after a mean lifetime of 26.033 nanoseconds (2.6033×10−8 seconds), and the neutral...

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3 branches of this genus, most-observed first

Pion fortipes

speciesPion fortipes

Pion crassipes

speciesPion crassipes

Pion nigripes

speciesPion nigripes

See this branch on the Wheel of Life →
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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.

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In the old herbals & bestiaries

Pion in Phytognomonica

Phytognomonica

Giambattista della Porta · 1588 · p.162

Pion in The Dialogue of Creatures

The Dialogue of Creatures

Anonymous · 1509 · p.39

Pion in Ulyssis Aldrovandi ... De animalibus insectis libri septem

Ulyssis Aldrovandi ... De animalibus insectis libri septem

Aldrovandi, Ulisse · 1618 · p.240

Pion in Experiments on the Generation of Insects

Experiments on the Generation of Insects

Francesco Redi · 1668 · p.85

Pion in Herbarius latinus (with Dutch synonyms)

Herbarius latinus (with Dutch synonyms)

1486 · p.211

Pion in The History of the Holy Grail

The History of the Holy Grail

1523 · p.163

Pion in Physiologia Kircheriana Experimentalis

Physiologia Kircheriana Experimentalis

Athanasius Kircher · 1680 · p.60

Pion in Florentine Codex, Vol. 3 (Books 10-12)

Florentine Codex, Vol. 3 (Books 10-12)

Bernardino de Sahagún · 1577 · p.501

Pion in Garden of Health (Hortus Sanitatis)

Garden of Health (Hortus Sanitatis)

Jacob Meydenbach · 1491 · p.539

Pion in Commentaries on the Six Books of Pedanius Dioscorides on Medical Matter

Commentaries on the Six Books of Pedanius Dioscorides on Medical Matter

Pietro Andrea Mattioli · 1565 · p.489

Pion in History of Animals, Book II: On Oviparous Quadrupeds

History of Animals, Book II: On Oviparous Quadrupeds

Conrad Gessner · 1586 · p.453

Pion in Living Images of Plants

Living Images of Plants

Otto Brunfels · 1532 · p.427

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In the stacks

Searching the stacks…

Every page naming Pion in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 638879.