Leioproctus nigrofulvus

Leioproctus nigrofulvus is a solitary bee within the family Colletidae, a group characterized by short, cellophane-like tongues used to line their nest cells with a waterproof secretion. Like other members of its genus, it likely nests in burrows excavated in soil, provisioning cells with pollen and nectar for its larvae. As a pollinator, it contributes to the reproduction of native flowering plants within its forest habitat, playing a role in maintaining plant community structure and diversity.

The species is found in Australia, where it is associated with forest habitats. Its distribution appears to be geographically restricted, and its reliance on specific vegetation and soil conditions within these forests makes it sensitive to habitat disturbance.

The primary threat to this species is fire and fire suppression activities, an ongoing pressure in Australian forest ecosystems. Altered fire regimes—whether through increased fire frequency and intensity or through suppression practices that change vegetation structure—can degrade nesting sites and reduce the availability of floral resources the bee depends on. As a ground- or wood-nesting solitary bee, it may be particularly vulnerable to the direct effects of fire on nest sites and the post-fire recovery time needed for host plants to regenerate.

Specific targeted conservation programs for this species have not been widely documented, though it benefits indirectly from broader forest and fire management policies in Australia aimed at biodiversity conservation, as well as habitat protection within reserve systems.

The population is currently assessed as decreasing, and its IUCN status of Vulnerable reflects ongoing concern about the compounding effects of altered fire regimes on its restricted forest habitat. Without targeted monitoring and fire management adapted to pollinator conservation, its outlook remains uncertain.