Tissisyin (assaɣ usnan: Arachnid) d asmil yeṭṭafaren astirf n teswermin, Deg wesmil-a llan-t tɣirdmiwin d tessisin d waṭas n telmas tigennatin (n tegnit) d waṭas n telmas yesgunfayen s ifucken. Dɣa deg wesmil-a llan ugar n telmas (s tebɣaynust d twekka d tselfin) Maca ur yessefk ara urway (usexled) gar n Tissisyin yakk d iburɣas acku tissisyin ɣersent 8 n iṭarren maca war afriwen neɣ timejjiwin Tasartut Tafesna n tessisin (Araneae)Tafesna n tissizeflin (Amblypygi)Tafesna n tɣirdmiwin (:Scorpiones)Tafesna n Tibelleɣmanin (opiliones)