The variability of the chromosome numbers in Psocomorpha (Insecta, Psocoptera)

Chromosome numbers in eight species of Palaearctic Psocoptera (Insecta)

“…In Elipsocus moebiusi (Elipsocidae) 2n = 12 + XX/X0. This chromosome number is the lowest one in Psocoptera, and previously was reported only for Loensia variegata Latreille, 1799 (Psocidae) (Golub, 2004). Two other studied species from the genus Elipsocus Hagen, 1866 are characterized by 2n = 16 + XX/X0 (Table 2).…”

“…Chromosome systems of Psocoptera are still not adequately explored, although some papers concerning psocopteran karyotypes have been published recently (Nokkala, Golub, 2002, 2006Golub, 2004). Like the other Paraneoptera, the species of Psocoptera have holocentric chromosomes.…”

Karyotype and Reproductive Organs of Male Dorypteryx domestica (Smithers, 1958) (Psocoptera: Trogiomorpha: Psyllipsocidae)

“…Troctomorpha and Psocomorpha are mainly characterized by lower chromosome numbers, however all three suborders share the same karyotype with 2n=17, X0, which is considered ancestral for Psocoptera, at least for the largest suborder Psocomorpha (GOLUB 2004).…”