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 Latrodectus corallinus Abalos, 1980

Latrodectus corallinus Abalos, 1980

Latrodectus corallinus Abalos, 1980

Latrodectus corallinus is a red-marked black widow spider species native to Arge…

How to identify Latrodectus tredecimguttatus (Rossi, 1790)

Latrodectus tredecimguttatus (Rossi, 1790)

Latrodectus tredecimguttatus (Rossi, 1790)

Latrodectus tredecimguttatus, the Mediterranean widow, is a venomous spider foun…

How to identify Cryptachaea veruculata (Urquhart, 1886)

Cryptachaea veruculata (Urquhart, 1886)

Cryptachaea veruculata (Urquhart, 1886)

This small spider species shows clear sexual size dimorphism and builds small we…

How to identify Sardinidion blackwalli (O.Pickard-Cambridge, 1871)

Sardinidion blackwalli (O.Pickard-Cambridge, 1871)

Sardinidion blackwalli (O.Pickard-Cambridge, 1871)

Sardinidion blackwalli is the only species in the monotypic comb-footed spider g…

How to identify Parasteatoda lunata (Clerck, 1757)

Parasteatoda lunata (Clerck, 1757)

Parasteatoda lunata (Clerck, 1757)

Parasteatoda lunata is a Palearctic cobweb spider in Theridiidae that was moved …

How to identify Cryptachaea blattea (Urquhart, 1886)

Cryptachaea blattea (Urquhart, 1886)

Cryptachaea blattea (Urquhart, 1886)

Cryptachaea blattea is a native-African cobweb spider species from the family Th…

How to identify Steatoda nobilis (Thorell, 1875)

Steatoda nobilis (Thorell, 1875)

Steatoda nobilis (Thorell, 1875)

Steatoda nobilis is a widespread highly invasive spider native to Macaronesia, i…

How to identify Argyrodes fissifrons O.Pickard-Cambridge, 1869

Argyrodes fissifrons O.Pickard-Cambridge, 1869

Argyrodes fissifrons O.Pickard-Cambridge, 1869

Argyrodes fissifrons is a small kleptoparasitic spider that lives in other spide…

How to identify Emertonella taczanowskii (Keyserling, 1886)

Emertonella taczanowskii (Keyserling, 1886)

Emertonella taczanowskii (Keyserling, 1886)

Emertonella taczanowskii is a spider species of the genus Emertonella, found acr…

How to identify Nihonhimea japonica (Bösenberg & Strand, 1906)

Nihonhimea japonica (Bösenberg & Strand, 1906)

Nihonhimea japonica (Bösenberg & Strand, 1906)

Nihonhimea japonica is a small sexually dimorphic theridiid spider widely distri…

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 Anelosimus eximius (Keyserling, 1884)

Anelosimus eximius (Keyserling, 1884)

Anelosimus eximius (Keyserling, 1884)

Anelosimus eximius is a social spider from the Americas that forms large coopera…

Browse all 103 Theridiidae species →

Frequently Asked Questions

How do you identify Theridiidae?

Theridiidae animals belong to the Araneae order in the Animalia kingdom. It is identified by thirteen spots on the dorsal side of its abdomen, which matches its species name, the Latin phrase meaning "with thirteen spots". 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. Cryptachaea veruculata (Urquhart, 1886) has a distinct difference in body size between the sexes: females reach an approximate body size of 4 mm, while males only reach about 1.

Sources: GBIF, iNaturalist, Wikipedia · Disclaimer

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