* BestKnownForTheFanservice: The ''Species'' films are mainly known for one thing: Natasha Hensridge taking her clothes off a lot.
* EvilIsSexy
* HilariousInHindsight: One of Sil's victims in the first was named John F. Carey. The 2004 Presidential candidate was John F. ''Kerry'', who was a well-known senator at the time of the movie.
* NightmareFuel: Many of the deaths are brutal (such as Sil ripping the spine of a woman), the alien transformations are as disgusting as the ones from ''Alien'', and even [[http://www.youtube.com/watch?v=x4aydQSu7-E the first movie's soundtrack]] contributes to a creepy atmosphere.
* ParanoiaFuel: See FanDisservice.
* {{Sequelitis}}: First film is considered either OK or SoBadItsGood. The following ones aren't so lucky.
* SpecialEffectFailure: The aliens prosthetics in ''Species III'' are vastly inferior to what was seen in the two previous films. ''The Awakening'' has similarly bad effects, but for the most part it does a better job of working around them.
** In the first film, the "mist" in the woods outside the hot tub guy's house is patchy, obviously from a smoke machine. Also the ConspicuousCGI in the final scenes (which H.R. Giger complained about, saying that unlike the animatronics they weren't worthy translations of his design).
* StrawmanHasAPoint: In the first film, Xavier says they made her female assuming she'd be more docile - but they actually may have bought themselves more time, considering in the sequel we see first hand the damage an attractive male can do when he can have multiple partners at once.
* VisualEffectsOfAwesome: There's no denying ''Species II'' had some pretty awesome scenes.