| The genus is about equally divided into two subgenera, those with pedicellate flowers and those with sessile flowers. |
| Nevertheless, several Lutzomyia species can transmit both, representatives of the Viannia and Leishmania subgenera. |
| Popov's monograph of Cenozoic cardiid shell microstructure includes more than 62 genera and subgenera and 150 species. |
| The genus, which includes about 75 species, is divided into four subgenera. |
| The volva is a feature of great importance in the study of the Agaricini, of the subgenera Amanita, volvaria, etc. |
| Species and not genera or subgenera are considered the most appropriate units in biodiversity studies. |
