Bed bugs found at MSNBC’s Manhattan headquarters caused staffers to scatter ahead of the left-leaning network’s Super Tuesday coverage, The Post has learned.

According to a memo obtained by The Post, an “unidentified insect” was spotted Sunday in the recently revamped studio 3A — home to special election coverage and “The Rachel Maddow Show” — at 30 Rock in Midtown.

Additional studios on the third floor were also shuttered “out of an abundance of caution.”

“They are scrambling,” an NBC source told The Post on Monday. “They’ve already been borrowing an unused local studio for some shows in recent weeks. So studio space is tight.”

The memo said an exterminator was brought in to treat the studio, green rooms and control room.

“An environmental K-9 detection team will ensure the remediation efforts were complete and will take an extra pass, through extended areas of newsrooms [on the third floor],” the memo said.

MSNBC did not comment.

A source close to the network said the memo was sent out Monday as part of a wider communication and the “studio reopened an hour or so after memo went out and inspection was complete.” 

The insider said MSNBC anchors have returned to their desks in the main studio and will be broadcasting from there for Tuesday’s primary coverage — when voters in 16 states and American Samoa go to the polls.