Bull. Inst. Zool., Academia Sinica 29(3): 141-152 (1990)

THE CELAENORRHINUS HUBNER IN TAIWAN: A REVISIONAL WORK (: HESPERIIDAE)

YU-FENG Hsu Department of Entomological Sciences, University of California, Berkeley, CA 94720, U. S. A.

(Accepted October 23, 1989)

Yu-Feng Hsu (1990) The genus Celaenorrhinus lIilbner in Taiwan: a revisional work (Lepidoptera: Hesperiidae). Bull. Inst. Zool., Academia Sinica 29(3): 141-152. Seven of Celaenorrhinus including two new taxa are here confirmed from Taiwan. A revised key and a check list are also proposed in this study. Key words-: Celaenorrhinus, Taiwan, New taxa.

warrant a review of the Taiwanese SkiPpers of the genus Celaenorrhinus Celaenorrhinus. Hubner are forest inhabitants. They Here I give a revised key and describe often fly in shady places and extend two newly recognized taxa. their wings at rest. The genus is amazingly widespread throughout the MATERIALS AND METHODS tropical and subtropical zones in Oriental, Neotropical and Afrotropical regions. Specimens from various regions of Taiwan, as the eastern limit of the Asian Taiwan were examined. The male geni­ members in the genus, has seven repre­ talia were left in 10% KOH solution for sentatives. 24 hrs and then dissected in 75% ethanol Species of Taiwanese Celaenorrhinus for observation. The dissected genital are difficult to identify due to remarkable specimens are preserved in 75% ethanol. in terspecific similarities and intraspecific The type specimens for new taxa variations. There have been many errors described here will be placed in the on identification in the literatures. Shirozu following collections: (1960) made a revision for Taiwanese British Museum (Natural History), species in the genus and concluded that London, England (BMNH). six species ought to be recognized. He California Academy of Sciences, San illustrated the six species, including Francisco, California (CAS). diagrams of male genital structure, and Museum, Department of Plant also provided a key based upon external Pathology and Entomology, National features. Subsequent workers have Taiwan University, Taipei, Taiwan followed his treatment; however, a better (NTUIM). understanding of intraspecific variations Essig Museum of Entomology, U ni­ based on recent materials and the versity of California, Berkeley, California discovery of an undescribed species (UCB). 141