tibicen

Tibicen is a genus of cicadas in the family Cicadidae. Members are large insects known commonly as dog-day cicadas or annual cicadas in North America. The genus has included many North American species with robust bodies, clear wings, and loud, percussion-like calls produced by males via tymbals, the sound-producing organs on the abdomen. Calls vary among species and are used for territory and mate attraction.

Life cycle and behavior: Like other cicadas, Tibicen nymphs spend several years subterranean feeding on root sap before emerging as winged adults. Adults typically appear during the summer months, often in synchrony within local populations but not in strict, synchronized broods like some other cicadas. Adults live for a few weeks to a couple of months, during which males produce calls to attract females. Eggs are laid in slits in tree branches; nymphs burrow into the soil when they hatch.

Habitat and distribution: Tibicen species are commonly found in deciduous woodlands, orchards, and urban trees across much of North America, with regional variances in species richness and chorus timing. They are diurnal and most active on warm, sunny days.

Taxonomy: The genus Tibicen has undergone taxonomic revisions. Some species previously placed in Tibicen have been moved to other genera as part of ongoing efforts to clarify cicada relationships using morphology and molecular data. Tibicen remains a useful, if evolving, label for many North American dog-day cicadas.

Notable species: Tibicen canicularis, the dog-day cicada, is among the best-known species in eastern and central North America.

Ecology: They are sap-feeders and serve as prey for birds and other predators; their emergence can be a major seasonal event in some ecosystems.