Clemnius sylvanus
(Fall, 1917)
Sylvan Hygrotus Diving Beetle
Clemnius sylvanus is a diving in the Dytiscidae, first described by Fall in 1917. It belongs to the Clemnius, which was formerly treated as a subgenus of Hygrotus. The is known from North America and has been recorded in forested wetland . Like other members of Dytiscidae, it is an aquatic as an and larva.
Pronunciation
How to pronounce Clemnius sylvanus: /ˈklɛmni.əs sɪlˈvænəs/
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Identification
Members of Clemnius can be distinguished from the related Hygrotus by subtle differences in male genitalia and the structure of the pro- and mesotarsi. Specific identification of C. sylvanus requires examination of these features, as external is generally similar to other small dytiscids in the Hydroporinae. The name 'sylvanus' suggests association with woodland , which may aid in field recognition.
Habitat
Forest-associated wetlands, including pools and slow-moving waters in wooded areas. The specific epithet and indicate preference for sylvan (woodland) environments.
Distribution
North America. Specific state or provincial records are sparse; the single iNaturalist observation and GBIF data confirm presence on the continent without detailed locality information.
Ecological Role
As a dytiscid , likely functions as an aquatic in small freshwater , contributing to control in forest pool .
Similar Taxa
- Hygrotus spp.Formerly classified within Hygrotus; Clemnius was elevated to status based on morphological differences in male genitalia and tarsal structure. External appearance is nearly identical, requiring dissection for reliable separation.
- Other HydroporinaeSmall size and general body form overlap with numerous other in this diverse ; precise identification requires examination of detailed taxonomic characters.
More Details
Taxonomic History
Clemnius was treated as a subgenus of Hygrotus for much of the 20th century. Recent taxonomic revisions, particularly by Biström and others, have elevated Clemnius to full generic status based on phylogenetic and morphological evidence. The 'Sylvan Hygrotus Diving ' reflects this historical classification.
Data Limitations
This is poorly represented in public databases, with only one iNaturalist observation and limited specimen records in GBIF. Much of its remains undocumented in accessible literature.