(syn. Caprimulgus Ϯ Pennant-winged Nightjar C. vexillarius) Gr. σημειον sēmeion  flag, standard  < σημα sēma, σηματος sēmatos  sign;
-φορος -phoros  -carrying  < φερω pherō  to carry; "Genus SEMEÏOPHORUS, Gould.   CHARACTERES GENERICI.  Characteres ut in genere Macrodipteryx dicto, nisi quod remiges sextus, septimus, et octavus gradatim elongati fiunt, usque ad nonum, qui his, sicut vexillum, præstat, barbasque fert per totam longitudinem.   SEMEÏOPHORUS (MACRODIPTERYX?) VEXILLARIUS, Gould  ...   Semeïophorus (Macrodipteryx?) vexillarius, Gould, in Proc. of Zool. Soc. Part VI. 1838.   The general structure of this species is precisely the same as that of the Macrodipteryx Africanus, Swains. and it doubtless represents that bird on the opposite side of the African continent; still, as the form of the wing is very different, I have ventured to propose for it a separate generic station, leaving future research to prove whether I have taken a correct view of the subject." (Gould 1838); "Semeïophorus Gould, Icones Av., pt. 2, 1838, pl. [13] and text. Type, by monotypy, Semeïophorus (Macrodypteryx?) vexillarius Gould." (Peters 1940, IV, 217).

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 on 19 March 2019).