---
title: "Woodlouse Spider"
description: "Dysdera crocata — Insects & spiders. The woodlouse spider (Dysdera crocata) is a species of spider that preys primarily upon woodlice."
canonical: https://animalchecklist.com/animal/woodlouse-spider
last_updated: 2026-09-20
---

# Woodlouse Spider

> Dysdera crocata — Insects & spiders. The woodlouse spider (Dysdera crocata) is a species of spider that preys primarily upon woodlice.

- Scientific name: *Dysdera crocata*
- Category: `insects` (Insects & spiders)
- Habitats: `forest` (Forest)
- iNaturalist observations: 29673
- Wikidata: [Q1150747](https://www.wikidata.org/wiki/Q1150747)
- iNaturalist taxon: [68912](https://www.inaturalist.org/taxa/68912)

## Names

- en: Woodlouse Spider
- de: Großer Asseljäger
- es: Araña caza cochinillas
- fr: Dysdère armée
- nl: Roodwitte celspin
- pl: Komórczak okazały

## Countries with the most observations

US (17044), CA (1947), NZ (795), AU (678), GB (542), MX (520), AR (513), CL (263), ZA (184), ES (175), PT (132), FR (114)

## Summary

The woodlouse spider (Dysdera crocata) is a species of spider that preys primarily upon woodlice. Other common names refer to variations on the common name of its prey, including woodlouse hunter, sowbug hunter, sowbug killer, pillbug hunter and slater spider.

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

## Photo

![Woodlouse Spider](https://animalchecklist.com/img/animals/woodlouse-spider/medium.jpg)

Photo: monkeyjodey · CC0 · inaturalist — https://www.inaturalist.org/observations/142712020

## Machine access

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