Creeping-water-bug
Guides
Ambrysus arizonus
Ambrysus arizonus is a creeping water bug (family Naucoridae) in the Ambrysus guttatipennis species complex. It is distributed in both the United States and Mexico, with recent records extending its known range into Mexico. As a member of the Cryphocricinae subfamily, it shares the characteristic saucer-like, flattened body form and aquatic lifestyle typical of this group.
Ambrysus buenoi
Ambrysus buenoi is a creeping water bug in the family Naucoridae, distinguished as a member of the Ambrysus pulchellus species complex. It is diagnosed by specific male genital morphology, particularly the structure of the phallosoma and the medial lobes of abdominal tergum VIII. The species occurs in Mexico and the United States.
Ambrysus circumcinctus
creeping water bug
Ambrysus circumcinctus is a species of creeping water bug in the family Naucoridae, distributed across Central America and North America. As a member of the subfamily Cryphocricinae, it inhabits aquatic environments including running streams. The genus Ambrysus is widespread in the New World, with its greatest diversity in Mexico. Like other naucorids, this species has adaptations for clinging to substrates in flowing water.
Ambrysus hungerfordi
A creeping water bug in the family Naucoridae, described by Usinger in 1946. It belongs to the genus Ambrysus, which is widespread in the New World from northern North America to Argentina, with greatest diversity in Mexican running streams. Like other members of Cryphocricinae, it is aquatic in both nymphal and adult stages.
Ambrysus mormon
creeping water bug
Ambrysus mormon is a species of creeping water bug in the family Naucoridae, first described by Montandon in 1909. Three former subspecies (A. m. heidemanni, A. m. minor, and A. m. mormon) were synonymized by Reynoso-Velasco and Sites. The species is distributed in western North America, with records from the western United States and northwestern Mexico.
Ambrysus occidentalis
Ambrysus occidentalis is a species of creeping water bug in the family Naucoridae, described by La Rivers in 1951. It is distributed across Central America and North America. As a member of Naucoridae, it is an aquatic true bug adapted to life in freshwater environments. A study on its mating behavior has been published in the American Midland Naturalist, indicating research interest in its reproductive biology.
Ambrysus pulchellus
Ambrysus pulchellus is a creeping water bug in the family Naucoridae, part of the A. pulchellus species complex characterized by distinctive male phallosoma morphology and medial lobes of abdominal tergum VIII. The species exhibits the widest distribution within the subgenus Ambrysus, spanning parts of both the Nearctic and Neotropical biogeographic realms. Recent taxonomic revision has synonymized the subspecies A. pulchellus nitidulus and A. pulchellus pallidulus with the nominate form, and documented new country records from Honduras, Nicaragua, and Panama.
Limnocoris
Limnocoris is a genus of creeping water bugs in the family Naucoridae, comprising over 70 described species distributed primarily in the Neotropics. The genus was established by Stål in 1860 and represents the type genus of the subfamily Limnocorinae. Recent taxonomic revisions have significantly revised species boundaries, describing numerous new species and resolving synonymies across North America, the tropical Andes, and the Amazon/Guiana Shield regions. Species exhibit wing polymorphism and are distinguished by detailed morphological characters of the genitalia and terminalia.
Limnocoris lutzi
Limnocoris lutzi is a species of creeping water bug in the family Naucoridae. It is found in Central America and North America. Two subspecies are recognized: Limnocoris lutzi lutzi and Limnocoris lutzi rivers.
Pelocoris balius
Pelocoris balius is a species of saucer bug (family Naucoridae) endemic to Florida. Originally described as a subspecies of P. femoratus in 1970, it was elevated to full species status in 2015 based on sympatric occurrence with P. femoratus and distinct morphological characters. It is much less commonly encountered than its congener P. femoratus. In the Everglades, it shows a preference for shorter hydroperiod sites.
Pelocoris biimpressus shoshone
Pahranagat Naucorid Bug
Pelocoris biimpressus shoshone is a subspecies of creeping water bug in the family Naucoridae, described by La Rivers in 1948. It belongs to the true bug order Hemiptera and is part of the aquatic true bug infraorder Nepomorpha. The subspecies is known from Middle and North America, with records indicating presence in both regions. Very limited observational data exists for this taxon, with only two observations recorded in iNaturalist.
Pelocoris femoratus
creeping water bug, saucer bug
Pelocoris femoratus is a species of creeping water bug in the family Naucoridae. It is found across Central America, North America, and South America. The species inhabits still waters with dense vegetation, where it actively hunts other arthropods. It is active from spring through autumn and can deliver a painful bite if mishandled.