pullulare bedeutet auf Englisch

bustle [bustled, bustling, bustles]▼(to teem or abound (with))
verb
[UK: ˈbʌs.l̩] [US: ˈbʌs.l̩]

swarm [swarmed, swarming, swarms]▼(to move as a swarm)
verb
[UK: swɔːm] [US: ˈswɔːrm]