EN
The karyotype and male reproductive system, with special reference to the number of testicular follicles and shape of seminal vesicles, were studied in Dorypteryx domestica (Smithers, 1958) (Psocoptera: Trogiomorpha: Psyllipsocidae). This species displays 2n = 29 (28+X), a single nucleolus connected with one of the largest autosome pairs, and paired testes, each consisting of a single, large seminal follicle and a long, slightly coiled seminal vesicle.