Mimic 2

Mimicis a 2001 science fiction horror film, directed by Jean de Segonzac, with a script inspired by a short story of the same name by Donald A. Wollheim. The movie was a directtoDVD sequel to Mimic 1997, and was followed by MimicSentinel 2003.

After three men are discovered hideously mutilated their faces have been removed and strung up among New York Citys hightension wires, Detective Klaski Bruno Campos stumbles upon a link Each of the men knew entomologist Remy Alix Koromzay, a teacher at an innercity high school. Klaski considers Remy to be a prime, albeit unlikely, suspect in the killings until he witnesses for himself the shapeshifting creature that has been stalking Remy an intelligent mutant insect with the face of its previous victim. It wants to mate with Remy. Klaski, Remy and a pair of her students get trapped inside the school as the creature hunts them down. Meanwhile, a special forces unit, headed by the militant leader known only as Darksuit Edward Albert, gets ready to fumigate the school with poisonous gas.After all the trapped humans seem to have escaped the fumigation, and with the aid of a heroic Klaski in Remys case, inspection teams following through find the creatures recently vacated husk and, later on, the mangled corpse of Klaski. ........

Source: Wikipedia