Thermal-spring
Guides
Hedriodiscus truquii
Hedriodiscus truquii is a soldier fly (family Stratiomyidae) whose larval ecology has been studied in thermal spring habitats. The species was described by Bellardi in 1859 and occurs in North and Central America. A detailed 4-year ecological study documented its role as a dominant herbivore in two thermal spring communities in Washington State, where larvae feed on algae and serve as a significant energy conduit in these extreme ecosystems. Larvae are aquatic and subject to heavy predation pressure, particularly from spiders on newly emerged adults.
Thermosphaeroma
Thermosphaeroma is a genus of isopod crustaceans in the family Sphaeromatidae, endemic to thermal springs of the southwestern United States and central Mexico. The genus contains nine described species, most of which are critically endangered or extinct in the wild due to groundwater extraction and habitat alteration. These isopods exhibit specialized adaptations to thermo-mineral spring environments, including temperature-dependent life histories and pronounced sexual dimorphism in uropod morphology. Several species have been studied for their complex social behaviors, including precopulatory mate-guarding and cannibalism.
Thermosphaeroma thermophilum
Socorro isopod, Socorro sowbug
Thermosphaeroma thermophilum is a small, thermophilic isopod endemic to thermal spring habitats in Socorro County, New Mexico. It is one of the most endangered crustaceans in North America, having been driven to extinction in the wild in 1988 when a tree root burst the water pipeline that formed its only remaining habitat following spring diversion in 1947. The species persists through captive breeding programs and has been reintroduced to artificial habitats. It exhibits pronounced sexual dimorphism in body size and complex social behaviors including cannibalism and mate-guarding.