Well had a quick look at what books I have on the JU-88 and most june records concentrate on the D-day actions.
Most German action seems to have been over Italy around thoses dates though I can find no losses for the 6 June.
Mediterranean
31 May- Four German aircraft were lost including the following three JU-88's from KG77: W.nr.801620(3Z+IN), 822098(3Z+HL) AND 550914(3Z+KK)
My guess would be one of these:
KV 3626
Fliegerkorps I informed on 25th April of following locations:
(a) Rumanian units: two bomber Staffeln at Ciocarlia. One recce Staffel at Podresti (Bucharest). One sea recce Staffel at Mamaia. One sea recce Staffel at Valcov (comment: 4524/2934 East). One fighter Gruppe, one bomber Staffel at Janka (comment: 52 kilometres south of Galatz) with part detachment of one at Jebrieni (comment: 4532/2935 East).
(b) Bulgarian recce Staffel at Varna.
more info here
http://www.ghostbombers.com/various/...a/rumania.html
I see that Hungarian Ju-88's were also active at that time.
If you start a thread at
http://forum.12oclockhigh.net/forumdisplay.php?f=8 I'm sure they will be able to help.
S`
Edit* From the OKL order of battle dated 26th june 1944
I. Fliegerkorps (HQ: Foçsani / Moldavia)
L.R. Reconnaissance: 3.(F)/121 Zilistea 8 Ju 88
.R. Reconnaissance: NSt. 1 Focsani 14 Do 217: He 111
This seems the closest unit to Galati operating Ju88's at the time: