关键词: 皮脂蠕形螨, 扫描电镜

Abstract: This paper presents the first description of the morphology of Demodex brevis examined by scanning electron microscopy.The authors found that D.brevis can be distinguished from D.folliculorum by the characteristic features of the following structures: the flat gnatho-soma,the humplike podosoma and the absence of transverse striation on its anterior dorsal Surface,the suprecoxal spines,the hypostome,the oral opening,the pedipalpal claws and the claws on legs,and the ennuli of the terminal part of the opisthosoma.The morphology of the above structures observed are briefly compared with those of D.folliculorum.