Monogyne
Guides
Brachymyrmex
Rover Ants
Brachymyrmex is a genus of minute ants in the subfamily Formicinae, commonly known as rover ants. Workers are distinguished by having only nine antennal segments—fewer than most ants—and by the petiole being concealed by the gaster in dorsal view. The genus contains 44 species and 17 subspecies, though species-level identification is challenging due to minimal morphological variation, small size, and soft-bodied workers. Brachymyrmex patagonicus, the dark rover ant, has become a significant invasive pest in the southern United States and other regions worldwide.
Formica pallidefulva
field ant
Formica pallidefulva is a medium-sized field ant native to North America, ranging from reddish-gold in the southern United States to dark brown-black in Canada. Workers measure approximately 5–6 mm and are notably glossy compared to related species. The species excavates underground nests with horizontal and vertical galleries, typically without surface mounds. It serves as a primary host for multiple slave-making ants, including Polyergus lucidus and Formica pergandei, which raid its colonies for brood. Colonies are monogyne, diurnal, and forage solitarily while recruiting nestmates to larger food sources.