An actinomycete stain 1569 isolated from a Siberian soil sample is described as a representative of a new species, designated as Actinoplanes cyaneus sp. nov. The actinomycete cell wall contains meso-diaminopimelic acid, arabinose, xylose and a non-identified analogue of diaminopimelic acid. The actinomycete forms spherical sporangia with mobile spores. The aerial mycelium is absent. The isolate produces a soluble blue pigment on synthetic media. The pygment investigation showed that it belonged to the group of celicomycin-actinorodine.