Review of the pill millipede genus Silvestri, 1917 (Diplopoda, Glomerida, Glomeridae) with description of two new species from Laos.

The pill millipede genus Silvestri, 1917 is reported from Laos for the first time. Two new species, namely Likhitrakarn, and Likhitrakarn, , from Houaphanh and Khammouane provinces, northern Laos, are described and illustrated based on morphological characters and molecular analyses. Sequences of COI gene were used as DNA barcoding markers, and successfully supported the accurate identification of other Glomeridae species. Interspecific divergence of the COI uncorrected p-distance between these new species and other species ranged from 7.84-13.07%, while the intraspecific divergence was 0.45% in and 5.3% in The updated status of , a map of its distribution, and identification keys for all species are given.