Chromosomes of Selenopidae. Anyphops sp. (Mossel Bay) (2n♂ = 26, X1X20) A mitotic metaphase B pachytene, note close association of sex chromosomes C diakinesis D metaphase II, note positive heteropycnosis of X chromosomes. Selenops sp. 1 (Ophathe) (2n♂ = 26, X1X20) E mitotic metaphase F pachytene, note close association of X1X2 G diakinesis H metaphase II. Selenops sp. 2 (Namibia) (2n♂ = 29, X1X2X30) I mitotic metaphase J pachytene, note close association of X1X2X3 K metaphase I L half of metaphase II with sex chromosomes. Arrowheads indicate sex chromosomes. Scale bars: 5 μm.