Hymenorus heteropygus
Fall, 1931
Hymenorus heteropygus is a small in the Alleculinae (), described by Fall in 1931. As a member of the , it belongs to a group of formerly classified as a separate but now subsumed into the darkling beetles. in this and subfamily are typically small, inconspicuous beetles that do not resemble the more familiar 'classic' darkling beetles like Eleodes.
Pronunciation
How to pronounce Hymenorus heteropygus: //hɪˈmɛnərəs ˌhɛtɛroʊˈpaɪɡəs//
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Identification
Hymenorus heteropygus can be identified as a member of the Alleculinae () within . Unlike typical , Alleculinae have with that are longer than wide, superficially resembling (). However, the are concealed beneath the rather than exposed and forward-directed. The specific epithet 'heteropygus' suggests asymmetry in the ( abdominal segment), which may be a diagnostic feature for this species.
Ecological Role
As a member of the Alleculinae, this likely contributes to decomposition . are generally associated with decaying matter and fungal substrates, serving as in their .
Similar Taxa
- Carabidae (ground beetles)Alleculinae like Hymenorus have elongated antennal that resemble , but can be distinguished by concealed and lack of rapid running
- Eleodes and other 'classic' TenebrionidaeHymenorus lacks the bead-like antennal , slow lumbering movement, and defensive -standing characteristic of many in the tribe Tenebrionini
- Lagriinae (long-jointed beetles)Another former now included in ; Lagriinae differ in body form and antennal structure, though both groups deviate from typical