(Caprimulgidae; Ϯ Sickle-winged Nightjar E. anomalus) Gr. ἑλεοθρεπτος heleothreptos  marsh-bred  < ἑλος helos, ἑλεος heleos  marsh; τρεφω trephō  to nourish; "Eleothreptus  ...  Obs. Nomen: ελεον, misere, vel mensa culinari, et θρεπτος, nutritus. Si a vocab. ἑλος (palus) derivaretur, ἑλειοθρ . . v. ἑλωθρ . . et latine Heleiothr. vel Helothr. scriberetur" (Sundevall 1872);  "ELEOTHREPTUS, n.  Amblypterusa, Gould.  E. anomalus, (Gould,) n.  Gould, Icon. Av. II. pl.    aSimilar to a word used in Entomology." (G. Gray 1840); "Eleothreptus G. R. Gray, List Gen. Bds., 1840, p. 7. New name for Amblypterus Gould, 1838. Type, by original designation and monotypy, E. anomalus (Gould) = Amblypterus anomalus Gould.1   ...   1 Gray believed Gould's generic name to be "similar to a word used in entomology" referring no dount to Amblyptera Solier, 1836. There is however a genus of fossil fishes, Amblypterus Agassiz, 1833 of which Gould's name is a homonym." (Peters 1940, IV, 220).    
Var. Eleothreptes, Heleothreptus.   
Synon. Amblypterus.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2019). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2019). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 19 January 2019).