Tropisternus

Solier, 1834

Species Guides

12

Tropisternus is a of hydrophilid beetles containing 63 in five subgenera, distributed across North and South America. Species in this genus are aquatic or semi-aquatic and have been studied for their , variation, and of temporary water bodies. Research has focused on species-specific mating calls, developmental , and drought avoidance mechanisms.

Tropisternus lateralis limbalis by (c) Elliott Gordon, some rights reserved (CC BY), uploaded by Elliott Gordon. Used under a CC-BY license.Tropisternus apicipalpis by (c) Matthew Pintar, some rights reserved (CC BY), uploaded by Matthew Pintar. Used under a CC-BY license.Tropisternus apicipalpis by (c) Matthew Pintar, some rights reserved (CC BY), uploaded by Matthew Pintar. Used under a CC-BY license.

Pronunciation

How to pronounce Tropisternus: /troʊ.pɪˈstɜrnəs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Habitat

Aquatic and semi-aquatic environments including permanent ponds, temporary playas, and surrounding wetland . have been documented in western Oregon ponds and Southern High Plains playas in Texas.

Distribution

North and South America. Documented from western Oregon and Texas playas in the United States; extensive records from Colombia including Amazonas, Antioquia, Arauca, Atlántico, Bogotá, Bolívar, Boyacá, Caldas, Casanare, Cauca, Chocó, Cundinamarca, La Guajira, Guaviare, Huila, Meta, Putumayo, Risaralda, San Andrés y Providencia, Santander, Sucre, Tolima, Valle del Cauca, and Vaupés departments.

Life Cycle

and distinct developmental stages have been described for at least three . Laboratory rearing methods have been established for comparative studies.

Behavior

Males of at least three (T. ellipticus, T. columbianus, and T. lateralis limbalis) produce species-specific acoustic signals through stridulation, consisting of distinct temporal patterns of chirps and trills that likely function in mate recognition and reproductive isolation. T. lateralis has been observed to colonize temporary playas from surrounding aquatic and avoid drought through aerial .

More Details

Acoustic Communication

Acoustic signaling through stridulation represents a notable behavioral trait in this , with -specific temporal patterns that may serve as prezygotic isolating mechanisms.

Drought Avoidance

T. lateralis demonstrates aerial as a mechanism to escape drying conditions in temporary aquatic .

Sources and further reading