''Robertus cantabricus'' is a

spider Spiders (order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species d ...

in the family

Theridiidae Theridiidae, also known as the tangle-web spiders, cobweb spiders and comb-footed spiders, is a large family of Araneomorphae, araneomorph spiders first described by Carl Jakob Sundevall in 1833. This diverse, globally distributed family includes ...

. The scientific name of this species was first published in 1931 by

Jean-Louis Fage Jean-Louis Fage (30 September 1883, in Limoges – 1964, in Dijon) was a French marine biologist and arachnologist. A native of Limoges, he studied biology at the Sorbonne and in the laboratory at Saint-Vaast-la-Hougue. In 1906 he obtained his doc ...

References

Theridiidae Spiders of Europe Spiders described in 1931 {{Theridiidae-stub