[2] Horváth was born in Csécs, then a part of northern Hungary, and studied to the Kassa Gymnasium, where his teachers included Ludwig Heinrich Jeitteles.

He continued as director after being renamed to the State Entomological Station and broadened its focus to other kinds of noxious insects.

[3] In 1896, he returned to the Hungarian National Museum, where he was director of its Zoology Department until he retired.

He remained active in entomology after retirement, and was president of the 10th International Zoological Conference when Budapest hosted it in 1927 (his 80th year).

[5] A species of millipede, Cylindroiulus horvathi, was named in his honor by Karl Wilhelm Verhoeff (1897:467).