The Lacerta Plague was an unknown epidemic that was mentioned by Annalee Call. The details and history of the plague are not known, however, it has been theorized that it took place on Earth. Call refers to it when trying to convince her comrades that the Xenomorph infestation that has broken out on the USM Auriga, if unchecked, will make the plague "look like a f*****g square dance."
- The word Lacerta means lizard in Latin. In addition, Lacerta is also the name of one of the 88 modern constellations defined by the International Astronomical Union.