Belonocnema
Mayr, 1881
Belonocnema is a of restricted to the southeastern United States. The genus comprises three recognized that induce distinct on section Virentes oaks, including live oaks. All species exhibit heterogony, with alternating sexual and producing morphologically and ecologically different gall . The genus has been subject to taxonomic revision, with Dryorhizoxenus now synonymized under Belonocnema.
Pronunciation
How to pronounce Belonocnema: /bɛloʊnɒkˈniːmə/
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Identification
Belonocnema are distinguished from other by their association with section Virentes oaks and their characteristic : galls appear as small spherical structures on leaf undersides, while sexual generation galls form on roots. The genus can be separated from the synonymized Dryorhizoxenus by morphological and genetic characters now consolidated under B. treatae. Species-level identification requires examination of gall location, generation , and subtle morphological differences in the themselves.
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Habitat
Restricted to supporting section Virentes oaks, primarily in the southeastern United States. These include coastal plain forests, maritime hammocks, and oak-dominated woodlands where oaks occur.
Distribution
to the United States, ranging from Texas eastward to Florida.
Host Associations
- Quercus section Virentes - All induce ; on leaf undersides, sexual generation on roots
Life Cycle
Heterogonic with alternating sexual and . Asexual females produce small spherical on the undersides of leaves. Sexual generation induces galls on oak roots.
Ecological Role
creates structure supporting a complex of associated organisms. Multiple , , and have been documented rearing from Belonocnema galls, indicating significant trophic importance.
Similar Taxa
- Other Cynipini genera on oaksBelonocnema is distinguished by its restriction to section Virentes oaks and the unique combination of leaf-based and root-based sexual galls; most other oak induce galls on stems, , or leaves in both .