Nigma is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. They have a wide distribution, including Eurasia, North America, and Northern Africa. N. walckenaeri is one of the biggest members of the Dictynidae, growing up to long. They are translucent green and sometimes have red or black markings on the abdomen.
Species it contains fourteen species: Nigma conducens (O. Pickard-Cambridge, 1876) – North Africa Nigma flavescens (Walckenaer, 1830) (type) – Europe, Caucasus, Iran Nigma gertschi (Berland & Millot, 1940) – Senegal Nigma gratiosa (Simon, 1881) – Portugal, Spain, North Africa Nigma hortensis (Simon, 1870) – Portugal, Spain, France, Algeria Nigma laeta (Spassky, 1952) – Azerbaijan, Iran, Tajikistan Nigma linsdalei (Chamberlin & Gertsch, 1958) – United States Nigma longipes (Berland, 1914) – East Africa Nigma nangquianensis (Hu, 2001) – China Nigma puella (Simon, 1870) – Europe, Azores, Madeira, Canary Is. Nigma shiprai (Tikader, 1966) – India Nigma tuberosa Wunderlich, 1987 – Canary Is. Nigma vulnerata (Simon, 1914) – Mediterranean Nigma walckenaeri (Roewer, 1951) – Europe, Turkey, Caucasus
References
External links Nigma at BugGuide