Resumen Es generalmente aceptada la tesis de que Euripides es el antecesor dramatico directo de Menandro. Esta tesis supone ademas que Aristofanes, a pesar de ser el autor de comedia mas antiguo que se conserva, tiene poca relacion con la tradicion comica posterior. No obstante, las obras de Aristofanes estan llenas de referencias a la tragedia de Euripides. Este trabajo se centra en analizar la parodia que de la tragedia Helena hace Aristofanes en su comedia Las Tesmoforias. Con este analisis quiero demostrar que ciertas caracteristicas propias del arte tragico euripideo, en especial el uso de la esticomitia, pasaron a ser parte constitutiva del genero de comedia gracias a que Aristofanes, al parodiar a Euripides, las incorporo al genero. Palabras clave : parodia; comedia; Aristofanes; Euripides; esticomitia; tradicion. Abstract It is generally accepted the idea that Euripides is the main dramatic ancestor for Menander. This idea supposes also that Aristophanes, the oldest comedy author we still keep, is slightly related to the Western comic tradition. Nevertheless, many of the plays by Aristophanes are full with references to the tragedies of Euripides. This paper is focused in analyzing the parody that Aristophanes makes of Euripides’s Helen in his comedy Thesmophoriazusae. With this analysis, I try to prove that some of the main characteristics of euripidean Tragedy, specially the use of the stichomythia, became a esential part of the comic genre, thanks to it inclusion to the genre that Aristophanes did trough his parody. Keywords : parody; comedy; Aristophanes; Euripides; estichomythiatradition.