Aggregating-behavior
Guides
Padaeus trivittatus
boxelder bug
Padaeus trivittatus, commonly known as the boxelder bug, is a true bug in the family Pentatomidae. Adults and nymphs feed primarily on seeds of boxelder, maples, and ash trees. The species is notable for aggregating in large numbers on sunny building exteriors in autumn and seeking winter shelter in homes and structures. It completes one to three generations per year depending on geographic location. Despite its nuisance status as a home invader, it does not bite, sting, or reproduce indoors.
Pleuroloma
Pleurolomas
Pleuroloma is a genus of flat-backed millipedes in the family Xystodesmidae, distinguished by its great age, extensive geographic range, and ecological adaptability. The genus comprises four recognized species, with P. flavipes being the most widespread, ranging from the eastern Atlantic Coast to the central Great Plains. Members exhibit distinctive aggregating and migrating behaviors, particularly P. flavipes, which may contribute to its broad distribution. The genus is unique within Xystodesmidae for these behavioral traits and its ability to colonize diverse habitats.
Vertagopus
Vertagopus is a genus of springtails in the family Isotomidae, comprising approximately 30 described species distributed across arctic, alpine, and temperate regions of the Northern Hemisphere. The genus includes both widespread and geographically restricted species, with some showing strict alpine specializations. Certain species, such as V. sarekensis, are notable for forming large aggregations and exhibiting coordinated group migration behaviors. The genus has been subject to recent taxonomic revision in eastern Siberia, where new species continue to be described.