BHWW We're gonna need some BIG Roach Motels...and get the brand name ones too, don't buy those house brand ones from the dollar store.
Jeriko-1 I'd like to mention that I remember this movie.
The roaches spell out "DIE" on a wall at one point.
Robin Kestrel Yeah, they have some sort of hive mind intelligence. This movie freaked me out when I was young.
Binro the Heretic This movie freaked me out as a kid when I saw it back in the 1970s. The bugs had two organs on their abdomens that produced electric sparks. The scene that ended up giving me a nightmare was the one where a bug crawls up in a woman's hair and sets her head on fire.
The bugs had super-thick exoskeletons and couldn't be crushed by normal means because their contents were under intense pressure. The antagonist used a knitting needle to pierce one and it exploded.
He cross-bred the bugs with regular cockroaches...which proved to be a bad move.
KnowFuture A William Castle joint. One of his last, if I'm not mistaken.