---
title: "Chalkhill Blue"
description: "Polyommatus coridon — Insects & spiders. The chalkhill blue (Lysandra coridon) is a butterfly in the family Lycaenidae."
canonical: https://animalchecklist.com/animal/chalkhill-blue
last_updated: 2026-09-20
---

# Chalkhill Blue

> Polyommatus coridon — Insects & spiders. The chalkhill blue (Lysandra coridon) is a butterfly in the family Lycaenidae.

- Scientific name: *Polyommatus coridon*
- Category: `insects` (Insects & spiders)
- Habitats: `grassland` (Fields & meadows)
- iNaturalist observations: 20288
- Wikidata: [Q15768393](https://www.wikidata.org/wiki/Q15768393)
- iNaturalist taxon: [109983](https://www.inaturalist.org/taxa/109983)

## Names

- en: Chalkhill Blue
- de: Silbergrüner Bläuling
- es: Niña Corindón
- fr: Argus bleu-nacré
- it: Lysandra coridon
- nl: Lysandra coridon
- pt: Lysandra coridon
- pl: Modraszek korydon

## Countries with the most observations

DE (2913), IT (2374), FR (1482), AT (1353), GB (1321), CZ (940), CH (912), ES (862), PL (428), RU (283), UA (218), HU (210)

## Summary

The chalkhill blue (Lysandra coridon) is a butterfly in the family Lycaenidae. It is a small butterfly that can be found throughout the Palearctic realm, where it occurs primarily in grasslands rich in chalk. Males have a pale blue colour, while females are brown. Both have chequered fringes around their wings.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Chalkhill_blue

## Photo

![Chalkhill Blue](https://animalchecklist.com/img/animals/chalkhill-blue/medium.jpg)

Photo: Philip Precey · CC0 · inaturalist — https://www.inaturalist.org/observations/249554303

## Machine access

`GET https://animalchecklist.com/api/v1/animals/chalkhill-blue?lang=en` — see [openapi.json](https://animalchecklist.com/openapi.json).