This paper reviewed the species of the genus Hexacentrus Serville from China, listed the key to species of the genus Hexacentrus from China, and described a new species, namely Hexacentrus expansus sp. nov. This new species is close to H.inflatissimus Gorochov & Warcholowska-Sliwa,1999 and H. yunnaneus Bey-Bienko, 1962, but differs from the former in: 1)body obviously small; 2) Cu2 vein of male left tegmen long and straight; 3) Rs vein of male tegmina arising from about the end of R vein; 4) tegmina of female narrow, not reaching the apex of ovispositor; and from the latter in: 1) body yellowish green,the third and fourth joints of tarsi blackish brown; 2) Cu2 vein of male left tegmen strong; 3) Rs vein of male tegmina arising from the end of R vein, at base slightly curved; 4) styli slender, longer than the half length of subgenital plate. The type specimens are deposited in the Museum of Hebei University.%本文对中国似织螽属已知种类进行了研究,并列出了该属已知种的检索表,同时记述一新种,即宽翅似织螽Hexacentrusexpansus sp.nov.该新种与H.inflatissimus Gorochov & Warcholowska-Sliwa,1999和H.yunnaneus Bey-Bienko,1962相似,与前者的主要区别:1)体明显较小;2)雄性左前翅Cu2脉较长且直;3)雄性前翅Rs脉从R脉近端部分出;4)雌性翅狭,不到达产卵瓣端部;与后者的主要区别:1)体黄绿色,跗节第3、4节黑色;2)雄性左前翅Cu2脉粗壮;3)雄性前翅Rs脉从R脉近端部分出,基部稍弯曲;4)雄性腹突细长,长于下生殖板的1/2.模式标本保存于河北大学博物馆.
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