Good spot, another black cat for sure, but there is no official connection between 10.(Nacht)/ZG 26 and JG 53.
I think that it might be an emblem carried across as a personal emblem by someone from another unit, but that is a complete guess and I have neither the means nor the time to look into the personnel. Personal emblems were rare things to see on JG 53 aircraft, though that is an early war photograph.
Cheers
Steve