---
title: "Sad Ground Crab Spider"
description: "Xysticus funestus — Owady i pająki. Xysticus funestus, the mournful ground crab spider, the sad ground crab spider or the deadly ground crab spider is a species of ground crab spider in the family Thomisidae."
canonical: https://animalchecklist.com/pl/animal/sad-ground-crab-spider
last_updated: 2026-09-20
---

# Sad Ground Crab Spider

> Xysticus funestus — Owady i pająki. Xysticus funestus, the mournful ground crab spider, the sad ground crab spider or the deadly ground crab spider is a species of ground crab spider in the family Thomisidae.

- Scientific name: *Xysticus funestus*
- Category: `insects` (Owady i pająki)
- Habitats: unknown
- iNaturalist observations: 3131
- Wikidata: [Q2401056](https://www.wikidata.org/wiki/Q2401056)
- iNaturalist taxon: [153721](https://www.inaturalist.org/taxa/153721)

## Names

- en: Sad Ground Crab Spider

## Countries with the most observations

US (759), CA (11)

## Summary

Xysticus funestus, the mournful ground crab spider, the sad ground crab spider or the deadly ground crab spider is a species of ground crab spider in the family Thomisidae. It is found in North America.
Despite one of the suggested common names - ‘deadly ground crab spider’, Xysticus funestus poses no threat to humans nor common pets. Bites are extremely rare due to the spider's natural avoidance of humans, and none of the group have bites that are medically significant for humans - typically only causing minor swelling and redness at the wound site.

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

## Photo

![Sad Ground Crab Spider](https://animalchecklist.com/img/animals/sad-ground-crab-spider/medium.jpg)

Photo: Caitlin Domon · CC0 · inaturalist — https://www.inaturalist.org/observations/187488235

## Machine access

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