[Preimaginal development of the flea, Ctenophthalmus golovi (Aphaniptera)].

Under experimental conditions individuals of C. (Medioctenophthalmus) golovi golovi Ioff et Tiflov, 1930 complete their metamorphosis within a wide range of temperatures (from 28-30 degrees to 2-6 degrees) and at high humidity of 90 to 100%. The highest survival of larvae and cocoon stages was observed at 23-25 degrees to 9-11 degrees. The development from egg to imago lasts 28 to 557 days depending on the temperature and great extent of hatching under all conditions. Embryogenesis carries out 4-97 days. The ability of C. golovi to complete metamorphosis at 2-6 degrees and to exist for a long time at the larval stage (up to 516 days) differs it from other souslik fleas and other species of Ctenophthalmus studied at the preimaginal stages.