关键词：sensu nov. ，stat. nov. ，

https://blog.sciencenet.cn/blog-56870-1273567.html

stat. nov.

nov.一般都是指新的分类单元，比如，sp. nov.（新种），gen. nov.（新属），fam. nov.（新科）。
我觉得可以理解为已有的分类单元的分类级别发生了变化，比如亚科变为科或者科变为亚科。
搜集了一些网络检索内容：
植物命名法规的记录
name at new rank (status novus). A new name based on a legitimate, previously published name at a different rank, which is its basionym and which provides the final epithet, name, or stem of the name at new rank (Art. 6.10 and 7.3) (see also basionym*, *new combination).

new combination (combinatio nova). A new name for a taxon below the rank of genus based on a legitimate, previously published name, which is its basionym and which provides the final epithet of the new combination (Art. 6.10 and 7.3) (see also basionym*, *name at new rank).

*动物命名法规中记录
The term "stat. nov." should not be used. But when it has been used to indicate that the former name of an infrasubspecific entity is being applied to a species or subspecies an author should accept that this explicitly indicated its user's intention to establish the former name of the infrasubspecific entity as a new name (see Article 45.5.1).

sensu nov.

"Sensu"是一个拉丁文词汇，意思是“在...意义上”。sensu nov.应该是指意义上的新科吧，应该是分类单元所包含的发生了变化。