Trilacuna spp., male labium and endites, ventral view A, B T. changzi sp. nov., white arrow shows the long, strongly curved spines C, D T. hponkanrazi sp. nov. E, F T. besucheti G, H T. triseta sp. nov., black arrow shows the three black, strong setae. Abbreviations: bts = bent thick setae; cos = comb-like setae.