Akita ranga; Akita Dutch-style painting
Historical term for a short-lived school of Western-influenced painting that flourished in the Akita domain during the mid-Edo period.
Akita ranga is a school of Western-style painting that flourished in the Akita domain in the mid-Edo period.
蘭画 is a broader term for Dutch-style painting in Edo-period Japan, while 秋田蘭画 specifically refers to the school centered in the Akita domain.
From 秋田 (Akita, the domain name) + 蘭画 (ranga, 'Dutch-style painting'). The term refers to a specific regional school of Western-influenced art.