A Gram-positive-staining, non-motile, rod- or coccoid-shaped bacterium, strain CLG(T), was isolated from beach sand from Lianyungang, Jiangsu Province, PR China. The organism grew optimally at 30 degrees C and pH 7.0. Strain CLG(T) contained L-Lys-D-Asp as the peptidoglycan type and galactose, rhamnose and xylose as the whole-cell sugars. It contained anteiso-C(15 : 0) and iso-C(15 : 0) as the major fatty acids. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phospholipid, phosphatidylinositol, three phosphoglycolipids and one unidentified lipid. The DNA G+C content was 70.3 mol%. The 16S rRNA gene sequence similarity of strain CLG(T) with Isoptericola dokdonensis DS-3(T) was 99.4 % but the DNA-DNA relatedness between strain CLG(T) and I. dokdonensis DS-3(T) was 58.7 %. There were also many phenotypic properties that distinguished strain CLG(T) from recognized species of the genus Isoptericola. The results showed that strain CLG(T) represents a novel species of the genus Isoptericola, for which the name Isoptericola jiangsuensis sp. nov. is proposed. The type strain is CLG(T) (=DSM 21863(T)=CCTCC AB208287(T)).