part of female genitalia copulatory opening The orifice leading to the copulatory duct in entelegyne condition. copulatory pore SPD:0000136 Certain exceptions might occur. One open case is Triaeris stenaspis described by Burger (2009, Inv. Biol. ). The females of this species have an opening on the posterior ventral scutum leading via a duct into a sac. According to the author the sac and duct is not connected to the uterus externus and also resemble a haplogyne condition. epigynal openings spider_anatomy anatomical space