Yoshiyasua is a grass moth genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 (family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Crambidae) of subfamily Musotiminae. Some authors have placed it in the snout moth family (Pyralidae), where all grass moths were once also included, but this seems to be in error.

The name refers to the genus' describer, entomologist Yutaka Yoshiyasu of Kyoto Prefectural University

Kyoto Prefectural University

, or for short, is one of the public universities in Japan. Its campus is located in Nakaragi-cho, Shimogamo, Sakyo-ku, Kyoto.- History :Kyoto Prefectural University was established in 1949 as by mingling two prefectural colleges: Kyoto Prefectural Agricultural and Forestry Vocational School ...

. The original name chosen by Yoshiyasu, Melanochroa, had to be changed because it properly refers to a genus

Melanochroa

Yoshiyasua is a grass moth genus of subfamily Musotiminae. Some authors have placed it in the snout moth family , where all grass moths were once also included, but this seems to be in error....

 of soldier flies (family Stratiomyidae, subfamily Stratiomyinae, tribe

Tribe (biology)

In biology, a tribe is a taxonomic rank between family and genus. It is sometimes subdivided into subtribes.Some examples include the tribes: Canini, Acalypheae, Hominini, Bombini, and Antidesmeae.-See also:* Biological classification* Rank...

 Prosopochrysini) described in 1886 already.