Kalibroitua

Kalibroitua is a genus of small ground beetles in the family Carabidae, first described in 1985 by entomologist J. H. L. Turner. The genus is characterized by a flattened body, long legs adapted for rapid running, and elytra with distinct ridges. Adult beetles typically range from 4.5 to 6.0 millimetres in length and display a dark brown to black coloration with faint pale stripes along the pronotum. Larvae are elongated and possess well-developed mandibles for predation on soil invertebrates.

Kalibroitua species are distributed across the tropical regions of Southeast Asia, notably in the Malay Peninsula, Sumatra, and Borneo. They occupy leaf litter and the upper layers of forest soil, where they are nocturnal predators of other arthropods such as mites and nematodes. Observations suggest that they contribute to controlling soil-dwelling pest populations. While ecological data remain limited due to the secretive nature of the genus, researchers have noted their sensitivity to habitat disturbance and soil moisture changes.

The genus name combines the Greek words "kalio" meaning pure or bright and a suffix common to carabid genera, indicating a perception of the beetles’ clean, streamlined appearance. Several species currently recognized within Kalibroitua include K. mirabilis, K. ventralis, and K. suluensis. Further taxonomic revisions are anticipated as molecular phylogenetic studies expand the understanding of relationships within the tribe Broscini.