 To make matters worse, J. Curtis popularized another incorrect spelling, "D. heracleana", apparently first introduced (as "Pyralis heracleana") by J.C. Fabricius in his 1775 "Systema Entomologiae".When the error of Retzius, Haworth and others was realized, it was assumed that the parsnip moth was only validly described (as "Haemilis pastinacella") by P.A.J.Duponchel in 1838, and consequently it was throughout much of the 20th century known as "D. pastinacella".