<国立科博専報>対馬の特異性を示すスズメバチ科の蜂類について

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Fauna of Is. Tsushima is particularly interesting in having a number of species of continental origin as well as those of the archipelago of Japan. However, only few species of Hymenoptera are considered actually endemic to these islands though a good number of them were described therefrom. We are still in short of material especially from the southern part of the peninsula of Korea for discussing the faunal relationships between these areas. I have noticed two endemic subspecies of vespid wasps which have not satisfactorily been known up to present. Anterhynchium (Dirhynchium) flavomarginatum tsushimarum (YASUMATSU) is an extensively melanochromatic form of A. flavomarginatum (SMITH) which ranges widely over South to East Asia and is represented in Japan and Korea by A. f. micado (KIRSCH), one of the most popular mason wasps in this region, so that the occurrence of such particular form in Tsushima is of special interest. A. f. tsushimarum is characterized by a strong reduction or lack of yellowish markings on thorax and abdomen, and by dark fuscous wings with distinct purplish lustre. The markings are pure yellow and never tinged with orange as in A. f. micado. In some females the body is entirely black with but a very small yellow spot between antennal fossae. Terga 1 and 2 entirely black or may be with a rudimentary yellow transverse line near posterior margin on each side, but seldom continuous medially to form a band. Clypeus is almost wholly yellow in the male but entirely black to at most on basal half yellow in the female. Thorax at most with a small yellow spot at the anterior margin of pronotum, without a trace of markings on scutellum and postscutellum. Vespa tropica esakii SONAN was originally described as a distinct species but is not more than a color form of Vespa tropica LINNAEUS as BEQUAERT stated. It is closely similar to V. tropica pulchra R. DU BUYSSON which ranges over Honshu, Shikoku, Kyushu and Korea, but is distinguished from the latter by having yellow band on each abdominal tergum to the sixth in both sexes and may be considered a good subspecies endemic to Tsushima. Thus, Tsushima has no endemic wasps in the specific rank as far as the family Vespidae is concerned; however, there are two, very conspicuous subspecies as mentioned above which are not known elsewhere. The significance of them will be great from the zoogeographical point of view, since the species to which they belong are represented in common by the other subspecies throughout Japan and Korea.
国立科学博物館の論文
1970-10-20

<国立科博専報>対馬の特異性を示すスズメバチ科の蜂類について

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