IPA: /ˌmɜːrmɪˈkɒlədʒɪst/
KK: /mɜrˈmɛkəˌlɒdʒɪst/
A scientist who studies ants and their behavior.
The myrmecologist discovered a new species of ant in the rainforest.
Myrmecologist → It is formed from "myrmeco-" (from Greek "myrmex", meaning ant) and "-logist" (from Greek "logia", meaning study or science). A myrmecologist is someone who studies ants.
Think of someone who studies 'ants' ('myrmex') — that's what a myrmecologist does.