Chorusing
Guides
Icosium
Icosium is a monotypic genus of longhorn beetles (Cerambycidae: Cerambycinae) established by Lucas in 1854, containing the single species Icosium tomentosum. The genus is notable for the unique acoustic behavior of its larvae, which produce substrate-borne vibrations audible to humans through mandible scraping against bark. This represents the first documented case of chorusing behavior in Cerambycidae larvae.
Icosium tomentosum
Icosium tomentosum is a longhorn beetle and the sole species in the monotypic genus Icosium. Native to the Mediterranean region, it has been introduced to California. The species is notable for its larval acoustic behavior: larvae produce audible sounds through mandible scraping against bark and exhibit chorusing behavior, responding to vibrations from other larvae in nearby branches.
Magicicada
Periodical Cicadas
Magicicada is a genus of periodical cicadas found in eastern North America, comprising seven species that emerge in synchronized mass events after 13- or 17-year underground development periods. These cicadas are among the longest-lived insects, spending nearly their entire lives as nymphs feeding on tree root xylem before emerging to molt, mate, and die within weeks. The genus is famous for its prime-numbered periodicity, predator satiation strategy, and the formation of distinct geographic broods that emerge on different schedules.