umbratilis, Gambusia Meek [S. E.] 1912:70 [Field Museum of Natural History, Publications, Zoölogical Series v. 10 (no. 7); ref. 2960] Guapilis [Limón], Costa Rica. Holotype: FMNH 7684 [not 7584]. Paratypes: FMNH 7826 (47), UMMZ 162479 [ex FMNH 7826] (10). Type catalog: Ibarra & Stewart 1987:38 [ref. 12367]. •Valid as Neoheterandria umbratilis (Meek 1912) -- (Rosen & Bailey 1963:128 [ref. 7067], Villa 1982:131 [ref. 36708], Bussing 1987:139 [ref. 22927], Bussing 1998:210 [ref. 24179]). •Valid as Xenophallus umbratilis (Meek 1912) -- (Lucinda in Reis et al. 2003:573 [ref. 27061], Lucinda & Reis 2005:43 [ref. 29205], Angulo et al. 2013:997 [ref. 33194], Meyer 2015:364 [ref. 34698], Huber 2019:142 [ref. 36941], Angulo et al. 2023:63 [ref. 40676]). Current status: Valid as Xenophallus umbratilis (Meek 1912). Poeciliidae: Poeciliinae. Distribution: Central America: Atlantic slope (Costa Rica and southern Nicaragua). Habitat: freshwater.