Large Yellow Underwing or Lesser Yellow Underwing?

Large Yellow Underwing or Lesser Yellow Underwing?

Observation - Large Yellow Underwing or Lesser Yellow Underwing? - UK and Ireland. Description: I successfully reared this moth and it just emerged today. However, please could you settle a family dispute? I think it's a Lesser Yellow Underwing but my Dad thinks it's a Large Yellow Underwing. Which is it? A photo of the caterpillar can be seen h

I successfully reared this moth and it just emerged today. However, please could you settle a family dispute? I think it's a Lesser Yellow Underwing but my Dad thinks it's a Large Yellow Underwing. Which is it? A photo of the caterpillar can be seen here: http://www.ispot.org.uk/node/127023?nav=related It fed on Yellow Corydalis as a larva.