| Nigma | |
|---|---|
 | |
| N. walckenaeri | |
 | |
| N. flavescens | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Dictynidae |
| Genus: | Nigma Lehtinen, 1967 [1] |
| Type species | |
| N. flavescens (Walckenaer, 1830) | |
| Species | |
14, see text | |
Nigma is a genus of cribellate araneomorph spiders in the family Dictynidae, and was first described by Pekka T. Lehtinen in 1967. [2] They have a wide distribution, including Eurasia, North America, and Northern Africa. [1] N. walckenaeri is one of the biggest members of the Dictynidae, growing up to 5 millimetres (0.20 in) long. They are translucent green and sometimes have red or black markings on the abdomen. [3]