Description of Perithreticus neglectus sp. n. from the West Usambara Mountains, Tanzania (Diptera, Psychodidae)

The Psychodinae of the Afrotropical Region remain poorly understood. Slightly under 200 species have been described, but many countries have received very little attention from collectors and even countries where significant collection efforts have taken place have rarely had their collections studied in detail by specialist taxonomists.Perithreticus neglectus sp. n. is described from the West Usambara Mountains, Tanzania, based on a male specimen collected in 1990. The new species is similar to Perithreticus anderseni Kvifte, 2015, which occurs in the same forest reserve, but can be separated by several genitalic characters, including the hypandrium well-developed with sclerotised anterior and posterior margins, gonocoxites narrower, the gonostyles with the slender apex shorter, the parameres shorter without pronounced basolateral projections and the surstylus with slightly fewer tenacula. The world fauna of Perithreticus now comprises five described species, of which two occur in the Afrotropical Region.

非洲热带地区的心理蝶科（Psychodinae）尚处于认识不足的状态。目前已有略少于200个物种被描述，然而许多国家在收藏者那里得到的关注甚微，甚至在那些曾进行过显著收藏工作的国家，其收藏物也鲜有被分类学家详细研究的。新物种Perithreticus neglectus sp. n.来自坦桑尼亚的乌萨马巴山脉西部，基于1990年收集的雄性标本进行描述。该新物种与2015年由Kvifte描述的Perithreticus anderseni相似，后者发生在同一森林保护区，但可以通过多个生殖器官特征区分，包括发达的基腹板，具有硬化的前缘和后缘，较窄的生殖突，顶端细长的生殖管较短，较短的无显著基外侧突起的副生殖管，以及具有较少抓握器的交配管。Perithreticus的世界物种群现在包括五个已描述的物种，其中两个分布在非洲热带地区。