Schizogenius longipennis-group
The Schizogenius longipennis-group comprises a within the ground beetle Schizogenius, distinguished by elongated and long hind wings that extend beyond the abdominal apex. Members of this group are associated with riparian and wetland in North America. The group has been subject to taxonomic revision due to cryptic and morphological convergence with other Schizogenius lineages.
Pronunciation
How to pronounce Schizogenius longipennis-group: /ˌskaɪzoʊˈdʒiːniəs ˌlɔːndʒɪˈpɛnɪs ɡruːp/
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Identification
Distinguished from other Schizogenius groups by the combination of elongated and fully developed hind wings that project beyond the elytral apices. Body form is more slender and parallel-sided compared to the S. falli-group. The pronotal hind angles are more acute and posteriorly produced than in S. lineatus-group. Male genitalia show distinctive paramere that separates this group from sympatric ; dissection is required for definitive identification of species within the group.
Habitat
Riparian corridors, stream margins, and wetland edges with saturated or seasonally flooded soils. Often found in muddy substrates with sparse vegetation cover.
Distribution
Eastern and central North America, with records from the Atlantic coastal plain westward to the Great Plains.
Similar Taxa
- Schizogenius falli-groupOverlaps in eastern North American distribution; distinguished by shorter, more rounded and reduced hind wings that do not exceed elytral apices.
- Schizogenius lineatus-groupSympatric in some wetland ; separated by less acute pronotal hind angles and more convex elytral profile.