This paper deals with two species of the Cerambycid genus Cyanagapanthia Breuning from China, including a new species: C. aurecens sp. nov. A key to the genus is provided. The type specimen is deposited in the Insect Collection, Nakai University, China.%系统研究了中国金蓝天牛属Cyanagapanthia Breuning,共记述2种,其中包括1新种:黄毛金蓝天牛Cyanagapanthia aurecens sp.nov..新种模式标本保存于南开大学生物系昆虫标本馆.黄毛金蓝天牛Cyanagapanthia aurecens sp.nov.:正模:(↑) ,云南思茅菜阳河,1200 m,2000-V-23,卜文俊采.本种与二色金蓝天牛C.bicolor的区别为:鞘翅金属蓝色,密被金黄色绒毛而非鞘翅光裸金属绿色;复眼下叶长宽略等而非长显胜于宽;小盾片半圆形而非三角形及鞘翅密布粗皱纹而非细皱纹等.
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