Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 66. (Budapest 1974)

Okada, T.: Drosophilidae (Diptera) from Korea

Note on the geographical distribution At present the Drosophilid fauna of N. Korea comprises 25 species: 3 hitherto recorded and 22 newly found. Of these species, 22 (88%) are common to Japan, 21 (84%) to S. Korea, and 10 (40%) to Europe. Of 10 species common to Europe, 4 are cosmopolitan, 6 Eurasian. Drosophila virilis is also holoarctic, though absent from Europe. All of the 6 Eurasian species are extending their distribution to Japan, but 2 of them (Chymomyza costata and D. alpina) were not yet found in S. Korea. Thirteen species are East-Asiatic, all extending into Japan, except one (D. clarofinis) which is limited to S. as well as N. Korea. The species endemic to N. Korea is at present only one (D. pappi), the endemism being 4%. Nearly a hundred species belonging to 9 genera of Drosophilidae have hitherto been recorded from S. Korea (LEE 1966). About 8.3% of them are endemic to that area, the endemism being twice higher than in N. Korea. Another 8.3% of the S. Korean species are of Oriental element, while none in N. Korea (Table 1). Scaptomyza pallida was exceedingly predominant in frequency, running to 323 examples, representing 77% of the total collection (419 ex).) All of the remaining species were very low in frequencies, even the highest being only 3.3% (D. histrio). Biogeographical elements of the Drosophilid fauna of N. Korea, as compared to that of S. Korea North Korea South Korea Elements Number of Number of species species /0 Endemic 1 4.0 8 8.3 Holarctic 1 4.0 1 1.1 Cosmopolitan 4 16.0 8 8.3 Eurasian 6 24.0 11 11.4 East-Asiatic 13 52.0 60 62.6 Oriental 0 0.0 8 8.3 Total 25 100.0 96 100.0 Also in S. Korea, S. pallida shows a high abundancy, but does not exceed D. auraria (D. biauraria and D. triauraria included) and D. angularis (according to data given by LEE, 1964). The abundant occurrence of S. pallida in N. Korea seems to reflect the dominancy of herbaceous edaphic environments. References KIKKAWA, H. & PENG, F. T. (1938): Drosophila species of Japan and adjacent localities. — Jap. J. Zool., 7: 507-552. LEE, T. J. (1964): Taxonomy and geographical distribution of Drosophilidae (Diptera) in Korea. — Chungand Univ. Theses Collect., 9: 425-459. LEE, T. J. (1966): A list of drosophilid fauna in Korea. — Rev. Sei. Engineer. Chungang Univ., 2: 7-20. MAHUNKA, S. & STEINMANN, H. (1971): Zoological Collectings by the Hungarian Natural History Museum in Korea. 1. A Report on the Collecting of the First Expedition. -Folia. Ent Hung., 24: 21-46.