#4
It is M. pavlovskyi, due to very narrow and rectangle yellow bands on 3rd and 4rd tergites clearily visible on all specimens + yellowish face + body very lustrous. The rest of diagnostic features of course cannot be visible from such peactures.
Females of M. quadrimaculata have completely dark abdomens + have a season peak much earlier (first half of March - depending on the weather and latitude).
