Rhopalum Stephens, 1829

Saini, Varun & Dey, Debjani, 2024, First record of subgenus Corynopus Lepeletier and Brullé, 1835 (Genus Rhopalum Stephens, Hymenoptera: Crabronidae: Crabronini) from India: a new species and a key to Asian species of the subgenus, Zootaxa 5507 (3), pp. 467-477 : 469

Genus Rhopalum Stephens, 1829

Subgenus: Corynopus Lepeletier de Saint Fargeau and Brullé, 1835: 802 . Type species: Crabro tibialis of Panzer, 1801 [= Crabro tibialis Fabricius, 1798 = Sphex coarctatus Scopoli, 1763 ], by monotypy.

Diagnosis. Head and mesosoma shiny, orbital fovea indistinct or sometimes present, ocellar triangle equilateral or slightly broader than high ( Fig. 4 ); antennomere IV conspicuously indented below in males; pronotal collar without carina; tergum I pyriform apically; pygidial plate distinctly edged, without median carina often, with mediobasal hump ( Figs. 12, 14–15 ) ( Lepeletier and Brullé 1835; Leclercq 2011).

Figures

FIGURES 3–8. Rhopalum (Corynopus) chettalicum sp. nov. Holotype ♀. 3. Head, frontal view; 4. Head, dorsal view; 5. Head, lateral view; 6. Clypeus; 7. Antenna; 8. Head, ventral view.

FIGURES 12–15. Rhopalum (Corynopus) chettalicum sp. nov. Holotype ♀. 12. Metasoma, lateral view; 13. Tergum I; 14–15. Pygidial plate, dorsal & lateral view.