Hymenorus sinuatus
Fall, 1931
Hymenorus sinuatus is a of in the , Alleculinae. The Hymenorus was formerly classified in its own family but is now treated as part of Tenebrionidae. This species was described by Fall in 1931. Members of the Alleculinae differ from typical in having more elongate bodies and -like on the hind .
Pronunciation
How to pronounce Hymenorus sinuatus: /haɪˈmɛnɔˌɹʊs sɪˈnuːətəs/
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Identification
Hymenorus sinuatus can be distinguished from () by its bead-like and concealed . It differs from typical in the Eleodes group by its more elongate body and lack of -standing defensive . Within Hymenorus, identification to requires examination of subtle morphological features, potentially including the sinuate (wavy) margins referenced in the species name. The Alleculinae was formerly treated as a separate , and its members do not resemble 'classic' darkling beetles.
Distribution
Recorded from British Columbia, Canada. The Hymenorus occurs in North America.
Similar Taxa
- Hymenorus (other species)Other in the same share the elongate Alleculinae body form and -like hind ; species-level identification requires detailed examination
- Statira spp. (Lagriinae)Another group formerly treated as a separate , now in , with similarly aberrant body forms compared to typical
- Ground beetles (Carabidae)May be confused due to similar size and ground-dwelling habit, but have exposed and usually longer, thread-like
More Details
Taxonomic history
The Hymenorus was formerly classified in the (), but this group has been subsumed into as the Alleculinae. This reclassification reflects modern phylogenetic understanding but means that Hymenorus do not conform to the typical '' that many associate with Tenebrionidae.
Etymology
The epithet 'sinuatus' is Latin for 'wavy' or 'bent,' likely referring to a diagnostic feature of the elytral or pronotal margins in this species.