Abstract: In this article, two new species from genera Xenodaeria Jordan (1932) and Rhadinopsylla Jordan et Rothschild (1912) (Siphonaptera:Ctenophthalmidae), collected from Linzhi, Tibet autonomous region of China, were described. (1) Xenodaeria houyongi sp. nov. Its main features are as follows:The frontal bristle consists of six spiniform bristles with deep ossification; in females, the depression of the posterior margin of sternum Ⅶ was small and shallow, the ventral lobe was wide and large and significantly longer than the dorsal lobe, and the height of the dorsal margin is significantly lower than that of the 7th spiracle; the depression of ventral margin at the bulga of spermatheca is located at the midpoint, and the hilla end has papillae. The holotype (only one ♀) was collected from the body of Crocidura dracula in a farming area (at an altitude of about 1 200 m) of Motuo county, Linzhi in December 2019. (2) Rhadinopsylla (Actenophthalmus) linzhiensis sp. nov. Its main features are as follows:It has a total of 18 pronotal combs; in males, the movable process of clasper is straight and slender, with symmetrical front and rear margins; the sternum Ⅷ has only 2 bristles; the apex port of posterior arms at sternum Ⅸ has a series of spiniform bristles; the end of uncinate process of the aedeagus is finger-like. The holotype (only one ♂) was collected from the body of Ochtona sp. in a farming area (at an altitude of about 3 000 m) of Bayi town, Linzhi in November 2018.

Key words: Siphonaptera, Ctenophthalmidae, Genus Xenodaeria, Genus Rhadinopsylla, New species s

摘要： 记述了在中国西藏自治区林芝市首次发现的蚤目栉眼蚤科（Siphonaptera： Ctenophthalmidae）厉蚤属（Xenodaeria Jordan，1932）和纤蚤属（Rhadinopsylla Jordan et Rothschild，1912）各一新种：（1）厚永厉蚤，新种（Xenodaeria houyongi sp.nov.），主要特征是：额鬃由6根骨化较深的刺鬃组成；雌第7腹板后缘的凹陷较小而浅，腹叶宽大并明显长于背叶，背缘明显低于第7气门的高度；受精囊头部腹缘的凹陷位于中点，尾部末端具乳突。模式标本（仅1雌）于2019年12月采自林芝市墨脱县的农耕区（海拔约1 200 m）的长尾大麝鼩体上。（2）林芝纤蚤，新种〔Rhadinopsylla （Actenophthalmus） linzhiensis sp.nov.〕，主要特征是：前胸背板栉刺共18根；雄抱握器可动突较直和细长，前、后缘对称；第8腹板腹缘仅具2根鬃；第9腹板后臂端部亚背缘具1列刺形鬃；阳茎钩突端部呈指状。模式标本（仅1雄）于2018年11月采自西藏自治区林芝市巴宜镇（海拔约3 000 m）未定名鼠兔体上。

关键词: 蚤目, 栉眼蚤科, 厉蚤属, 纤蚤属, 新种