Among the unsorted materials of the Natural History Museum Vienna, a new species of the E. striata group from West Malaysia was detected and is described under the name Echinopla lateropilosa sp.n. From Carlo Emery's collection in the Museo Civico di Storia Naturale Giacomo Doria, Genova, the holotype of Echinopla rugosa André, 1892 is redescribed and a paralectotype of Echinopla senilis Mayr, 1862 was rediscovered. In addition, Echinopla cherapunjiensis Bharti & Gul, 2012 is recorded from Myanmar for the first time, and a new record of Echinopla tritschleri Forel, 1901 is published from Perak in West Malaysia. The species-group system by Xu & Zhou (2015) is updated to include recently described species and a key to the species of the E. serrata group occurring west of Weber's Line is proposed. [ABSTRACT FROM AUTHOR]