Hemming (1967) stated:-
Catuna Kirby was introduced as a replacement name for Euomma Felder (C.) & Felder (R.),  (Reise Fregatte "Novara" Lep. Rhop. (3) : 425), which is invalid under the Law of Homonymy. In its turn, Euomma was a replacement name for Jaera Hübner, , which is also invalid under the Law of Homonymy. A replacement genus can under the Code take as its type-species only the species which is the type-species of the genus replaced or, if no type-species has been designated or selected for that genus at time of its replacement, which- ever of the nominal species originally included in the replaced genus may later be selected as type-species of the rejected genus or designated or selected as the type-species of the replacement genus.
At the time of the establishment of the replacement genus Catuna no type-species had been selected for Jaera, the replaced genus and no species had been designated or selected as the type-species of its replacement Euomma. Further, in introducing the replacement genus Catuna in 1871, Kirby did not designate a type-species for it. In order to determine what is the type-species of Catuna and therefore also of Euomma and Jaera, it is necessary to search the literature subsequent to 1871, to find who was the first author validly to select a type-species for any of these genera - and therefore for all of them - bearing in mind however that, in order that such a selection may be a valid selection, the species selected must be one of the nominal species placed by Hübner in his genus Jaera.
The first author to select a type-species for any of these nominal genera was Kirby in [1873 (Zool. Rec. 8 (year 1871) : 360), who selected Euomma angustatum Felder (C.) & Felder (R.),  (Reise Fregatte "Novara", Lep. Rhop. (3) : 425) to be the type-species both of Euomma Felder (C.) & Felder (R.),  and also of Jaera Hübner, . If Euomma had been an independently established nominal genus, Kirby's selection of Euomma angustatum would have been valid for that genus, for it was one of the species included at the time when that genus was established, but, as shown above, this was established not as a new genus but as a replacement for the rejected Jaera Hübner and its type-species must in consequence be one of the species originally included by Hübner in Jaera. However, Euomma angustatum was unfortunately not one of the three species originally included by Hübner in the genus Jaera and therefore the selection made by Kirby is invalid. Thereafter for many years however this genus was treated in the general sense proposed by Kirby. It was clearly undesirable however that this indeterminate situation should be allowed to persist indefinitely, and accordingly in 1943 (Proc. R. ent. Soc. Lond. (B) 12 : 28) I selected Papilio crithea Drury (the third of Hübner's original species) to be the type-species of Jaera Hübner, thereby automatically selecting that species to be the type-species also of the replacement genus Catuna Kirby and of its nomenclatorially invalid predecessor Euomma Felder & Felder. Luckily, from the taxonomic point of view Papilio crithea is closely related to Euomma angustatum, Kirby's pseudotype, and accordingly its selection as type-species ensured continuity of practice, while at the same time providing Catuna with a validly selected type-species.
Cowan (1970: 44) stated:-
"and add - [following line]
Catuna Kirby, 1871 is a junior objective synonym of Evena Westwood, 1850 [See Evena Westwood. ".
The higher classification used here follows Lamas (2008).
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