Hymenorus discretus
Casey, 1891
Hymenorus discretus is a of comb-clawed beetle in the Tenebrionidae, Alleculinae. It was described by Thomas L. Casey in 1891. Like other members of the Alleculinae, it does not conform to the typical 'darkling beetle' , possessing that more closely resemble those of ground beetles (Carabidae). The species is recorded from Ontario and Québec in Canada.
Pronunciation
How to pronounce Hymenorus discretus: /ˌhɪməˈnoʊrəs dɪˈskriːtəs/
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Identification
Hymenorus discretus can be distinguished from other darkling beetles by its , which have segments longer than wide and appear filamentous rather than bead-like. This superficially resembles ground beetle (Carabidae) antennae. However, the are concealed beneath the rather than exposed and forward-directed as in carabids. As a member of the Alleculinae, it lacks the 'classic' darkling beetle of like Eleodes.
Distribution
Recorded from Ontario and Québec, Canada.
Similar Taxa
- Ground beetles (Carabidae)Hymenorus discretus has filamentous with segments longer than wide, superficially resembling carabid antennae. Distinguished by concealed (vs. exposed in Carabidae) and slower, less agile movement.
- Classic darkling beetles (Tenebrioninae: Eleodes and relatives)Unlike Eleodes and related , H. discretus lacks bead-like and does not exhibit the characteristic -standing defensive .
More Details
Taxonomic history
The Alleculinae (comb-clawed beetles) were formerly treated as a separate but have been subsumed into Tenebrionidae. Many alleculines, including Hymenorus , do not resemble typical darkling beetles, complicating field identification.