S. Mahunka szerk.: Folia Entomologica Hungarica 62. (Budapest, 2001)

There is, however, additional spellings of the generic name. There was apparently more than one printing of Kluk (1780) (cf. Cowan 1970). Paclt (1955) examined a copy of Kluk (1780) in the Central Library of the Uniwersytet Jagiellonski in Krakow, Poland, according to the library stamp on the cover he illustrated. This copy can no longer be found in that library. The copy now in the library of the Instytut Zoologii, Uniwersytet Jagiellonski has a different cover (Fig. 2) than the copy (Fig. 1) examined by Paclt (1955). Thus both Piebeius and Plebejus are attributed to Kluk (1780). Kluk (1802) also appears to have been printed more than once, because the copy examined by Beuret (1961) used the spelling Plebeyus (Fig. 4). Therefore there are at least four variations of the generic name — Plebejus Kluk, 1780; Plebeius Kluk, 1780; Plebejus Kluk, 1802; and Plebeyus Kluk, 1802. The variation in spelling is perfectly reasonable. The letter "i" in classical Latin can be used as either a vowel or a consonant, with a convention whereby using "i" as a consonant is indicated by replacing the "i" with a "j". The letters "y" and "i" are also used interchangeably in Latin. As a result, species-level names that differ only in the use of "i" rather than "j", or "i" rather than "y" are considered homonyms (Article 58). The Code does not make such variant spellings homonyms at the generic level, therefore all three spellings are distinct and without homonymy (Fig. 5). Plebeius was used extensively in taxonomic literature for over 90 years until the 1960s. During this same period, authors describing new taxa commonly used three generic names (Lycaena, Plebeius and Plebejus) for "blues" in what is now accepted as the Plebeius/Plebejus-group. The use of Plebejus has predominated in most journal publications since the mid-1960s, apparently as a result of ICZN Opinion 278. Biological Abstracts 1981-2000 lists only one journal publication that used the spelling Plebeius (Bálint et al. 1993), and 42 that used Plebejus. Lepidopterists in the territory of the former Soviet Union have generally continued to use the spelling Plebeius, including Nekrutenko (1985), Tshikolovets (1997, 1998, 2000), and