Spiders of the Netherlands
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Theridiidae - genus: Robertus
sibling genera: Asagena, Chrysso, Coleosoma, Crustulina, Cryptachaea, Dipoena, Enoplognatha, Episinus, Euryopis, Lasaeola, Neottiura, Paidiscura, Parasteatoda, Pholcomma, Phycosoma, Phylloneta, Platnickina, Robertus, Rugathodes, Anelosimus, Sardinidion, Simitidion, Steatoda, Theonoe, Theridion

The genus Robertus is represented in the Netherlands by 4 species.

species English size ♀
size ♂
R. arundineti2.3-2.52.0-2.3■■■
R. lividus2.5-4.02.5-4.0■■■■pictures
R. neglectus2.0-2.31.7-2.0■■■■
R. scoticus1.7-2.01.7-2.0■■■

Species marked with a background colour closely resemble eachother.

Robertus sp.
external reference
World Spider Catalog
Wiki Spinnenforum
Fotogalerie AraGes
Le monde des insectes