A description of a new species of Diasemopsis (Diptera, Diopsidae) from the Comoro Islands with morphological, molecular and allometric data

A new species of Diasemopsis (Diptera, Diopsidae) from Comoro Islands is described and illustrated for the first time with allometric datasets. Diasemopsis comoroensis Carr & Földvári is shown to be genetically close, but morphologically distinct from the widespread Afro-tropical species D. meigenii (Westwood); notably a significant divergence in the degree of sexual dimorphism within eye span has occurred between the two species. A revised molecular phylogeny of the genus Diasemopsis is presented based on the partial sequences of four genes.