Corruption is that purple tunnely bit to the left of the snow (see this map view).
Crimson won't appear on this map as it is either crimson or corruption generated per map(First sentence in the wiki).
Your map biomes
I would say it goes:
Ocean, Forest, Dungeon, Corruption, Snow (+ 2 Floating Islands above), Forest, Desert, Forest, Jungle (+ 1 Floating Island), Ocean.