---
title: "Acronicta (Triaena) psi"
description: "Acronicta psi — Insectos y arañas. The grey dagger (Acronicta psi) is a moth of the family Noctuidae."
canonical: https://animalchecklist.com/es/animal/grey-dagger
last_updated: 2026-09-20
---

# Acronicta (Triaena) psi

> Acronicta psi — Insectos y arañas. The grey dagger (Acronicta psi) is a moth of the family Noctuidae.

- Scientific name: *Acronicta psi*
- Category: `insects` (Insectos y arañas)
- Habitats: unknown
- iNaturalist observations: 7760
- Wikidata: [Q1859583](https://www.wikidata.org/wiki/Q1859583)
- iNaturalist taxon: [325641](https://www.inaturalist.org/taxa/325641)

## Names

- en: Grey Dagger
- de: Pfeileule
- es: Acronicta (Triaena) psi
- fr: Psi
- it: Acronicta (Triaena) psi
- nl: Psi-uil
- pl: Wieczernica strzałówka

## Countries with the most observations

GB (1880), DE (625), DK (614), FR (337), RU (316), FI (217), AT (190), IT (141), PL (141), CZ (131), NL (116), ES (100)

## Summary

The grey dagger (Acronicta psi) is a moth of the family Noctuidae.

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

## Photo

![Acronicta (Triaena) psi](https://animalchecklist.com/img/animals/grey-dagger/medium.jpg)

Photo: Patrick Le Mao · CC0 · inaturalist — https://www.inaturalist.org/observations/145371137

## Machine access

`GET https://animalchecklist.com/api/v1/animals/grey-dagger?lang=es` — see [openapi.json](https://animalchecklist.com/openapi.json).