---
title: "Pond Olive"
description: "Cloeon dipterum — Insects & spiders. Cloeon dipterum is a species of mayfly with a Holarctic distribution."
canonical: https://animalchecklist.com/animal/pond-olive
last_updated: 2026-09-20
---

# Pond Olive

> Cloeon dipterum — Insects & spiders. Cloeon dipterum is a species of mayfly with a Holarctic distribution.

- Scientific name: *Cloeon dipterum*
- Category: `insects` (Insects & spiders)
- Habitats: `freshwater` (Lakes & rivers)
- iNaturalist observations: 7905
- Wikidata: [Q691414](https://www.wikidata.org/wiki/Q691414)
- iNaturalist taxon: [217219](https://www.inaturalist.org/taxa/217219)

## Names

- en: Pond Olive
- de: Fliegenhaft
- fr: Mouche de mai
- pl: Murzyłka dwuskrzydła

## Countries with the most observations

ES (406), GB (322), NL (321), PT (147), FR (128), DE (103), IT (59), RU (47), BE (39), HU (32), FI (24), TR (21)

## Summary

Cloeon dipterum is a species of mayfly with a Holarctic distribution. It is the most common mayfly in ponds in the British Isles and the only ovoviviparous mayfly in Europe. Males differ from females in having turbinate eyes.

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

## Photo

![Pond Olive](https://animalchecklist.com/img/animals/pond-olive/medium.jpg)

Photo: empressmoth · CC0 · inaturalist — https://www.inaturalist.org/observations/161792754

## Machine access

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