Abstract: The genus Cotysoides was erected in 2000, recognizable through the following morphological characters: size small; anterior margin of vertex protruding beyond eyes; antennae inserted in the lower one third level of anterior margin of eyes; disc of pronotum densely covered with small tubercles; median keel undulated, with a series projections; hind process not reaching the top of hind femur; lateral lobe of pronotum turning over outwards, posterior angles truncate; hind wing not reaching the top of hind process; the first segment of hind tarsus longer than the third. This paper reports six species of the genus Cotysoides Zheng et Jiang, including a new species, Cotysoides interruptus sp. nov. The new species is allied to Cotysoides guangxiensis Zheng et Jiang, 2000, but differs in: 1) width of vertex 1.5 times of an eye; 2) top of anterior angle of lateral lobe of pronotum obtuse angular; 3) hind wing reaching the knee of hind femur; 4) width of midfemur narrower than the width of tegmina; 5) hind margin of subgenital plate of female with a triangular projection in the middle. A key to species of Cotysoides is provided. Type specimens are kept in Institute of Zoology, Shaanxi Normal University and the Museum of Southwest Forestry University.

Key words: Orthoptera, Metrodoridae, Cotysoides, taxonomy, new species