First records of Pseudogaurax Malloch 1915 (Diptera: Chloropidae) from Singapore, with the description of two new species discovered with NGS barcodes

Abstract

Only few species belonging to the genus Pseudogaurax Malloch, 1915 (Diptera, Chloropidae) have been recorded from the Oriental region after Cherian described the first in 1976. Here we describe two new species from Singapore, Pseudogaurax sexnotatus Ismay & Ang, new species and P. striatus Ismay & Ang, new species. We discuss the biogeography of this genus, as well as taxonomic issues that are related to the separation of Pseudogaurax from Gaurax Loew, 1863. The species were discovered using NGS barcodes and are part of an ongoing campaign to document the biodiversity of Singapore.