Two new species of Hymenaphorura Bagnall, 1948 (Collembola, Onychiuridae) from Romania and an updated key to the genus

Two new species of the genus Hymenaphorura from Romania, H. urbana sp. nov. and H. kalindera sp. nov., are described and illustrated. Hymenaphorura urbana has a postantennal organ (PAO) with 13–15 simple vesicles, abdominal terga I–III with subequal setae p₂ and p₃, abdominal tergum V granular area with 3+3 distinct, long macrosetae, and H. kalindera sp. nov. has PAO with 9–12 simple vesicles, one border seta, abdominal terga I–III with setae p₂ slightly longer than setae p₃, abdominal tergum V granular area with 4+4 distinct macrosetae. Remarks on H. subsimilis Bagnall, 1948 are given. An updated key for the world distributed species of Hymenaphorura is presented.