SHADFLY
Meaning of SHADFLY in English
/shad"fluy'/ , n. , pl. shadflies .
mayfly (def. 1).
[ 1830-40, Amer.; so called because they hatch at the time of year when shad are running ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012