---
title: "Common Blue"
description: "Polyommatus icarus — Insetti e ragni. The common blue butterfly or European common blue (Polyommatus icarus) is a butterfly in the family Lycaenidae and subfamily Polyommatinae."
canonical: https://animalchecklist.com/it/animal/common-blue
last_updated: 2026-09-20
---

# Common Blue

> Polyommatus icarus — Insetti e ragni. The common blue butterfly or European common blue (Polyommatus icarus) is a butterfly in the family Lycaenidae and subfamily Polyommatinae.

- Scientific name: *Polyommatus icarus*
- Category: `insects` (Insetti e ragni)
- Habitats: `grassland` (Prati e campi)
- iNaturalist observations: 142260
- Wikidata: [Q161533](https://www.wikidata.org/wiki/Q161533)
- iNaturalist taxon: [55641](https://www.inaturalist.org/taxa/55641)

## Names

- en: Common Blue
- de: Hauhechel-Bläuling
- es: Ícaro
- fr: Azuré commun
- nl: Icarusblauwtje
- pl: Modraszek ikar

## Countries with the most observations

GB (15339), DE (12438), FR (11525), CA (11093), IT (7600), RU (7127), AT (5032), CZ (3796), ES (3422), DK (3190), PL (2709), UA (2166)

## Summary

The common blue butterfly or European common blue (Polyommatus icarus) is a butterfly in the family Lycaenidae and subfamily Polyommatinae. The butterfly is found throughout the Palearctic and has been introduced to North America. Butterflies in the Polyommatinae are collectively called blues, from the coloring of the wings. Common blue males usually have wings that are blue above with a black-brown border and a white fringe. The females are usually brown above with a blue dusting and orange spots.
The Common blue was elected as the national butterfly of Israel in 2023.

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

## Photo

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

Photo: dugald · CC0 · inaturalist — https://www.inaturalist.org/observations/234786433

## Machine access

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