enigmatica, Lacantunia Rodiles-Hernández [R.], Hendrickson [D. A.] & Lundberg [J. G.] in Rodiles-Hernández, Hendrickson, Lundberg & Humphries 2005:10, Figs. 1-2, 4-6 [Zootaxa No. 1000; ref. 28241] Reserva de la Biosfera Montes Azules, 16°08.083'N, 90°55.317'W, Selva Lacandona, Río Lacantún, Río Usumacinta basin, Chiapas, Mexico. Holotype: ECOSC 3859. Paratypes: ANSP 178696 (1, c&s), 178697 (1); ECO-SC 1166 (1), 3856 (1), 3858 (1);IPN P5787 (1); IBUNAM 12739 (1); TNHC 29071 (1), 27072 (1); UANL 15259 (1); UMMZ 243699 (1); USNM 378035 (1). Plus non-type material. Type catalog: Ferraris 2007:216 [ref. 29155]. •Valid as Lacantunia enigmatica Rodiles-Hernández, Hendrickson & Lundberg 2005 -- (Ferraris 2007:216 [ref. 29155], Lundberg et al. 2007:39 [ref. 29272], Page et al. 2013:83 [ref. 32708], Quintana et al. 2019:163 [ref. 36510], Barrientos et al. 2023:272 [ref. 41235], Page et al. 2023:80 [ref. 40505], Quintana 2024:5 [ref. 41186]). Current status: Valid as Lacantunia enigmatica Rodiles-Hernández, Hendrickson & Lundberg 2005. Lacantuniidae. Distribution: Southern North America, Central America: Usumacinta River basin, Chiapas (Mexico) and Quiché (Guatemala). Habitat: freshwater.