The film's greatest sins are ignoring established canon (suddenly krites can be killed by sounds like police sirens and air horns, and they can be safely kicked around and wrestled with, and their spines lack a paralyzing toxin [which is even acknowledged with the character quizzically saying "I'm fine?" after being shot], the black krites are suddenly all males and have a "queen" they don't respect who isn't ravenous for whatever reason) and leaving its story undeveloped. We're never given an actual explanation why the white krite doesn't want to eat people (or anything else, really. It would have been nice to have her chowing down on a pile of sushi at the restaurant), why the krites suddenly have a matriarchal structure, why the male krites don't obey the queen, how these krites exist when the last eggs are frozen with Charlie in a pod, nor are we given proper resolutions to the character arcs established throughout the film--which ends so abruptly that you can't consider it as actually having an ending. It cuts to credits immediately after the climax.

Approximately ten more minutes of footage, a little more development on the part of the krite queen in some small ways, and an adherence to the established elements of the species would have saved this movie from being the worst in the series.