How to Identify Theridiidae

Theridiidae is a animal family in the Animalia kingdom, order Araneae, class Arachnida. The family contains 103 accepted species worldwide.

Key Identification Features

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Representative Theridiidae Species

How to identify Argyrodes flavescens O.Pickard-Cambridge, 1880

Argyrodes flavescens O.Pickard-Cambridge, 1880

Argyrodes flavescens O.Pickard-Cambridge, 1880

Argyrodes flavescens, the red and silver dewdrop spider, is a small kleptoparasi…

How to identify Enoplognatha ovata (Clerck, 1757)

Enoplognatha ovata (Clerck, 1757)

Enoplognatha ovata (Clerck, 1757)

Enoplognatha ovata is a highly variable small spider native to Europe and introd…

How to identify Episinus truncatus Latreille, 1809

Episinus truncatus Latreille, 1809

Episinus truncatus Latreille, 1809

Episinus truncatus is a small dark Palearctic tangle-web spider that grows up to…

How to identify Latrodectus katipo Powell, 1871

Latrodectus katipo Powell, 1871

Latrodectus katipo Powell, 1871

Latrodectus katipo (katipō) is a New Zealand endemic widow spider with two colou…

How to identify Tidarren sisyphoides (Walckenaer, 1841)

Tidarren sisyphoides (Walckenaer, 1841)

Tidarren sisyphoides (Walckenaer, 1841)

Tidarren sisyphoides is a tangle web spider where mating males die, females do n…

How to identify Steatoda paykulliana (Walckenaer, 1806)

Steatoda paykulliana (Walckenaer, 1806)

Steatoda paykulliana (Walckenaer, 1806)

Steatoda paykulliana, the false widow spider resembling true black widows, is wi…

How to identify Theridula emertoni Levi, 1954

Theridula emertoni Levi, 1954

Theridula emertoni Levi, 1954

Theridula emertoni is a small tangle web spider species found in the United Stat…

How to identify Argyrodes elevatus Taczanowski, 1873

Argyrodes elevatus Taczanowski, 1873

Argyrodes elevatus Taczanowski, 1873

Argyrodes elevatus is a small kleptoparasitic spider found across the Americas, …

How to identify Parasteatoda tepidariorum (C.L.Koch, 1841)

Parasteatoda tepidariorum (C.L.Koch, 1841)

Parasteatoda tepidariorum (C.L.Koch, 1841)

Parasteatoda tepidariorum, the common house spider, is a widespread synanthropic…

How to identify Rhomphaea urquharti (Bryant, 1933)

Rhomphaea urquharti (Bryant, 1933)

Rhomphaea urquharti (Bryant, 1933)

Rhomphaea urquharti is a spider species endemic to New Zealand with distinct bro…

How to identify Euryopis episinoides (Walckenaer, 1847)

Euryopis episinoides (Walckenaer, 1847)

Euryopis episinoides (Walckenaer, 1847)

Euryopis episinoides is a common Mediterranean Theridiidae spider that has been …

How to identify Latrodectus bishopi Kaston, 1938

Latrodectus bishopi Kaston, 1938

Latrodectus bishopi Kaston, 1938

Latrodectus bishopi, the red widow, is a venomous spider endemic to Florida's sa…

Browse all 103 Theridiidae species →

Frequently Asked Questions

How do you identify Theridiidae?

Theridiidae animals belong to the Araneae order in the Animalia kingdom. Coloration can usually be sorted into three distinct morphs. For instant identification, use the iNature app — AI-powered and works offline.

What are the key characteristics of Theridiidae?

Theridiidae is classified in the order Araneae, class Arachnida, phylum Arthropoda. Silk threads usually pull the edges of the host leaf down slightly to create a hidden shelter, a feature that can be used to help locate these webs.

Sources: GBIF, iNaturalist, Wikipedia · Disclaimer

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