Bukva V
Institute of Parasitology, Academy of Sciences of the Czech Republic, Ceské Budĕjovice, Czech Republic.
Folia Parasitol (Praha). 1995;42(4):299-306.
Demodex neomydis sp. n. from the Mediterranean water shrew, Neomys anomalus, is described as a new species in all developmental stages. This demodecid is classified as a member of the genus Demodex Owen, 1843, but shows several morphological characters described in Soricidex dimorphus Bukva, 1982 and which are absent or very infrequent in other known Demodex species, viz., in the adult stage, a pair of shelf-like lamellae on the dorsum of the podosoma, dorso-lateral extension of the podosoma over the basal part of the gnathosoma, multiple opisthosomal organ in the male, and podosomal position of the vulva in the female. Immature stages of D. neomydis have unusual inflated idiosoma and dorsad deflected gnathosoma. All developmental stages of D. neomydis were found in the lumen of the hair follicles on the host's muzzle, causing no gross pathological response. On histological level, the main pathological change was distension of infested hair follicles by accumulations of up to a dozen mites, which appear to feed on the epithelial cells of the hair follicle walls.
来自地中海水鼩（Neomys anomalus）的新种——新米氏蠕形螨（Demodex neomydis sp. n.）在所有发育阶段均被描述为一个新物种。这种蠕形螨被归类为欧文蠕形螨属（Demodex Owen，1843）的成员，但具有一些在1982年布克瓦描述的双形鼩螨（Soricidex dimorphus）中出现的形态特征，而这些特征在其他已知的蠕形螨物种中不存在或非常罕见，即：在成虫阶段，足体背面有一对板状薄片，足体在颚体基部上方背外侧延伸，雄性有多个体后器官，雌性外阴位于足体位置。新米氏蠕形螨的未成熟阶段有异常膨大的虫体和向背侧偏斜的颚体。在宿主口鼻部毛囊腔内发现了新米氏蠕形螨的所有发育阶段，未引起明显的病理反应。在组织学水平上，主要的病理变化是受感染的毛囊因积聚多达十几只螨而扩张，这些螨似乎以毛囊壁的上皮细胞为食。
