The Terps fell behind 3-0 after 30 minutes, doomed by early mistakes and ruthless Nittany Lions finishing.
The unit conceded the second-most goals in the Big Ten during the 2019 campaign.
Herve would have starred in the midfield for the Terps.
The twins were each selected in last week's MLS SuperDraft.
Matt was drafted at No. 25, while Ben went at No. 44.
The Terps have brought in 10 new recruits.
Herve was a key cog in the Terps' 2018 national championship run, notching four goals and three assists.
“It kind of felt like Ludwig again."
Blumberg made two appearances for League One side Charlton Athletic before coming to the Terps.