What is subgenera?

Some articles on subgenera:

Pangasius - Taxonomy
... At this point, it was split into four subgenera ... part of Pangasius (Pangasius), thus leaving three subgenera ... Since then, the subgenera have been variably recognized as separate ...
Taxonomy Of Anopheles - Classification - Subgenera
... The genus itself has been subdivided into seven subgenera based primarily on the number and positions of specialized setae on the gonocoxites of the male genitalia ... The system of subgenera originated with the work of Christophers who in 1915 described three subgenera Anopheles (widely distributed), Myzomyia (later renamed Cellia) (Old World) and Nyssorhynchus (Ne ... Two additional subgenera have since been recognised Baimaia (Southeast Asia only) by Harbach et al ...
Culicoides - Notable Taxa
... A large number of species are of unknown relations to those that have been assigned to subgenera already ... Furthermore, many subgenera are sometimes elevated to full genus status, or additional genera (such as Paradasyhelea) are included as subgenera herein ...
Cymatium (gastropod) - Subgenera
... There are at least 10 subgenera within the genus Cymatium ... These are elevated by some authors to the level of genera ...
Clausiliidae - Genera - Phadusinae
... A.Adams, 1855 - with four subgenera Metaphaedusa H ... Leptacme Ehrmann, 1927 Oospira Blanford, 1872 - with five subgenera Atractophaedusa Ehrmann, 1927 Formosana O ... Nordsieck, 2003 and Siphonophaedusa Lindholm, 1924 Zaptyx Pilsbry, 1901 - with two subgenera Prozaptyx Loosjes, 1950 and Zaptyx tribe ? Acanthophaedusa H ...