This paper deals with study of a new species Hymenaphorura nicolae n.sp. collected in two karstic mountains near Medjugorje (Herzegovina). This species is caracterized by an elongated postantennal organ, well differentiatied macrochetae on thoracic and abdominal segments; tergite abdominal V has 3 + 3 macrochaetae and internal teethless claw. Moreover, Doutnacia and Fissuraphorura are cited for the first time in this area.
Collembola, Onychiuridae, systematics, karstic mountains, Herzegovina, Europa.