Nigma walckenaeri

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Nigma walckenaeri
Nigma walckenaeri 1.jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Araneae
Suborder: Araneomorphae
Family: Dictynidae
Genus: Nigma
Species: N. walckenaeri
Binomial name
Nigma walckenaeri
(Roewer, 1951)

Aranea viridissima
Drassus viridissimus
Ergatis viridissima
Argus viridissimus
Dictyna viridissima
Dictyna walckenaeri
Heterodictyna viridissima
Heterodictyna walckenaeri

Nigma walckenaeri - male, side view

Nigma walckenaeri is a green cribellate spider up to five millimetres long, the largest of the family Dictynidae. While most of the body is a somewhat yellowish, the abdomen is a shining green, which makes it rather distinct and hard to confuse with other species. The green color makes it almost invisible. Males have an elevated head region. From August to October these spiders can be found in gardens or on walls - often on big leaves such as lilac or feral grapevine. The spider catches insects, sometimes larger than itself, in its web, which it builds on the surface of leaves. The female hides the 7-millimetre long egg sac on a place distant from its retreat.

In Great Britain, until 1993, it was only found in London and the Home Counties. It may originally have been imported into Kew Gardens.[1]


The species is named in honor of Charles Athanase Walckenaer.


  • Bellmann, H. (1997). Kosmos-Atlas Spinnentiere Europas. (German)