smol aphid is smol (ft. pemphigus spyrothecae)

I was on an evening walk and found this weird leaf:

I carefully opened the bump and there were animals inside it!

it turns out these are little aphids that are living in there, pemphigus spyrothecae to be exact. in German: Spiralgallenlaus

Hab es dann wieder zu gemacht damit den Spiralgallenläusen nicht kalt wird da drin.

Aber die eine Laus da ist draußen geblieben…