---
title: "Tau Emerald"
description: "Hemicordulia tau — Insetti e ragni. The tau emerald (Hemicordulia tau) is a species of dragonfly in the family Corduliidae."
canonical: https://animalchecklist.com/it/animal/tau-emerald
last_updated: 2026-09-20
---

# Tau Emerald

> Hemicordulia tau — Insetti e ragni. The tau emerald  (Hemicordulia tau) is a species of dragonfly in the family Corduliidae.

- Scientific name: *Hemicordulia tau*
- Category: `insects` (Insetti e ragni)
- Habitats: `freshwater` (Laghi e fiumi)
- iNaturalist observations: 8393
- Wikidata: [Q2471088](https://www.wikidata.org/wiki/Q2471088)
- iNaturalist taxon: [323555](https://www.inaturalist.org/taxa/323555)

## Names

- en: Tau Emerald

## Countries with the most observations

AU (8281)

## Summary

The tau emerald  (Hemicordulia tau) is a species of dragonfly in the family Corduliidae. The species was first described by Edmond de Sélys Longchamps in 1871.

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

## Photo

![Tau Emerald](https://animalchecklist.com/img/animals/tau-emerald/medium.jpg)

Photo: crazybeelady · CC0 · inaturalist — https://www.inaturalist.org/observations/142578365

## Machine access

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