taxonID	type	description	language	source
F0890D04361E5527A13172102E56F397.taxon	diagnosis	Diagnosis. The new species is similar to Orthotrichia triton Malicky, 2008 from Borneo in the general shape of the male genitalia. However, it can be differentiated in that the shape of tergum X of Orthotrichia choengthongi Malicky & Laudee, sp. nov. is long and tubular, pointed apically and curved inwards then abruptly upwards in dorsal view; however, is stout basally then curved slightly downward in O. triton. Moreover, the united inferior appendages of the new species are collectively trilobed; but bilobed in O. triton.	en	Thamsenanupap, Penkhae, Malicky, Hans, Vongsombath, Chanda, Laudee, Pongsak (2021): Three new species of caddisflies (Trichoptera, Hydroptilidae, Polycentropodidae, Leptoceridae) from Khon Phapheng Waterfall, the Mekong River, Laos. ZooKeys 1055: 149-159, DOI: http://dx.doi.org/10.3897/zookeys.1055.66536, URL: http://dx.doi.org/10.3897/zookeys.1055.66536
F0890D04361E5527A13172102E56F397.taxon	etymology	Etymology. The species epithet honors Asst. Prof. Dr Suchart Choengthong, Prince of Songkla University, Surat Thani Campus.	en	Thamsenanupap, Penkhae, Malicky, Hans, Vongsombath, Chanda, Laudee, Pongsak (2021): Three new species of caddisflies (Trichoptera, Hydroptilidae, Polycentropodidae, Leptoceridae) from Khon Phapheng Waterfall, the Mekong River, Laos. ZooKeys 1055: 149-159, DOI: http://dx.doi.org/10.3897/zookeys.1055.66536, URL: http://dx.doi.org/10.3897/zookeys.1055.66536
E391C5D4BD90511E9478384690204BD3.taxon	diagnosis	Diagnosis. The male genitalia of S. karrilai sp. nov. are similar to those of S. omphale Malicky & Changthong in Malicky et al. 2004 from Thailand. Both species share similar characteristics of five lobes of each inferior appendage. However, the most prominent difference is the structure of segment X, i. e., the distal part of segment X in S. karrilai sp. nov. has a brush-like process, visible in lateral and dorsal views, which is lacking in S. omphale. In addition, the phallus of S. karrilai sp. nov. has a pair of very long, thin, pointed parameres with distal 1 / 3 bent and twisted meso-upward; whereas the parameres of S. omphale are curved downward.	en	Thamsenanupap, Penkhae, Malicky, Hans, Vongsombath, Chanda, Laudee, Pongsak (2021): Three new species of caddisflies (Trichoptera, Hydroptilidae, Polycentropodidae, Leptoceridae) from Khon Phapheng Waterfall, the Mekong River, Laos. ZooKeys 1055: 149-159, DOI: http://dx.doi.org/10.3897/zookeys.1055.66536, URL: http://dx.doi.org/10.3897/zookeys.1055.66536
E391C5D4BD90511E9478384690204BD3.taxon	etymology	Etymology. The species epithet honors Assoc. Prof. Dr Seppo Karrila, Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani Campus. Figure 3. Setodes karrilai, sp. nov. Male genitalia A segment X, preanal appendages, dorsal B segments IX and X, preanal appendages, inferior appendages, left lateral C segment IX, inferior appendages, ventral D phallus, left lateral. Abbreviations: Seg IX = segment IX, Pre = preanal appendage (paired), Inf = inferior appendage (paired).	en	Thamsenanupap, Penkhae, Malicky, Hans, Vongsombath, Chanda, Laudee, Pongsak (2021): Three new species of caddisflies (Trichoptera, Hydroptilidae, Polycentropodidae, Leptoceridae) from Khon Phapheng Waterfall, the Mekong River, Laos. ZooKeys 1055: 149-159, DOI: http://dx.doi.org/10.3897/zookeys.1055.66536, URL: http://dx.doi.org/10.3897/zookeys.1055.66536
38177D874B4D5F81996CDFA479D8959A.taxon	diagnosis	Diagnosis. The male genitalia of P. khonphaphengensis sp. nov. are similar to those of P. kaineus Malicky & Bunlue in Malicky et al. 2004 from Thailand. However, P. khonphaphengensis sp. nov. is strikingly different from P. kaineus and the other species of the genus by the usually broad, almost circular inferior appendages with 1.5 x longer than its width in lateral view, while the inferior appendages of P. kaineus are oval and 3.2 x longer than its width in lateral view. In addition, the phallus of P. khonphaphengensis sp. nov. bearing the hooked phallic sclerite which are lacking in P. kaineus.	en	Thamsenanupap, Penkhae, Malicky, Hans, Vongsombath, Chanda, Laudee, Pongsak (2021): Three new species of caddisflies (Trichoptera, Hydroptilidae, Polycentropodidae, Leptoceridae) from Khon Phapheng Waterfall, the Mekong River, Laos. ZooKeys 1055: 149-159, DOI: http://dx.doi.org/10.3897/zookeys.1055.66536, URL: http://dx.doi.org/10.3897/zookeys.1055.66536
38177D874B4D5F81996CDFA479D8959A.taxon	etymology	Etymology. The species is named for the type locality, Khon Phapheng waterfall. Figure 2. Pseudoneureclipsis khonphaphengensis, sp. nov. Male genitalia A segment X, preanal appendages and intermediate appendages, dorsal B segments IX and X and inferior appendages, left lateral C inferior appendages, ventral D phallus, left lateral; the arrow shows hooked phallic sclerite, ventral E phallus, dorsal. Abbreviations: Seg IX = segment IX, Seg X = segment X, Pre = preanal appendages, Int = Intermediate appendage, Inf = inferior appendage (paired), Bas = basodorsal process of inferior appendage.	en	Thamsenanupap, Penkhae, Malicky, Hans, Vongsombath, Chanda, Laudee, Pongsak (2021): Three new species of caddisflies (Trichoptera, Hydroptilidae, Polycentropodidae, Leptoceridae) from Khon Phapheng Waterfall, the Mekong River, Laos. ZooKeys 1055: 149-159, DOI: http://dx.doi.org/10.3897/zookeys.1055.66536, URL: http://dx.doi.org/10.3897/zookeys.1055.66536
