The Pseudo-Arachnids, or "Bugs", are a spider-like extraterrestrial race.
The Bugs have spacecraft, beam and missile weapons and advanced technology, far from the mindless, savage insects of the movies; in fact, this difference is stressed: "...stupid races don't build spaceships".
It is not explained if their technology is mechanic or organic, like the Plasma Bug (living artillery) in the film universe and the Transport Bug (bioship) in the television series Roughnecks: Starship Troopers Chronicles.
Bug society is based on a caste system in which they can coexist prosperously, as in both the films and the books. It is theorized they don't have emotions — at least of the human sort — and they never retreat unless they know they can't win. The individuals of the lower castes, such as Warriors, are telepathically connected to the Brain Bugs. The Bugs won't hesitate to kill their own kind of any caste should the situation demand it; they are ready to expend thousands of Workers in a diversionary action, or to wipe out their ruling castes to prevent their capture.
Death has little meaning to an individual Bug. Combined with the large numbers of Warriors, they are able to breed, they favor large swarm tactics, and human-wave attacks (or "Bug-wave" attacks) to overwhelm their enemies. At one point in the book, a Mobile Infantry trooper notes that "they expend Warriors like we expend ammunition".
They are described as looking like "a madman's conception of a giant, intelligent spider." Also, the Bugs can see into the infrared spectrum: though pitch dark to human eyes, the underground corridors of a Bug colony are well-lit when viewed through the infrared "snoopers" of the Mobile Infantry's Marauder Suits.
- The Psuedo-Arachnids is also referred as "Arachnids" in the Starship Troopers table-top wargame.
- Starship Troopers (novel)