鳥取県における外来性半翅目2種の分布

鳥取県に最近侵入したと考えられる外来性の半翅目昆虫2 種，アワダチソウグンバイとセイタカアワダチソウヒゲナガアブラムシの鳥取県内における分布を調べた。アワダチソウグンバイはセイタカアワダチソウの調査地点ではほとんどの場所で確認された．よって本種はすでに全県的に分布を拡大していると思われる。また，本県の東部から西部までの広範囲で，セイタカアワダチソウヒゲナガアブラムシの生息を鳥取県から初めて確認した。 / The lace bug, Corythucha marmorata iptera: Tingidae) is an exotic species of Tingidae which was recently introduced to Tottori Prefecture. Although the species utilizes an exotic plant, goldenrod Solidago altissima L. (Asteraceae) as a main host, it also attacks crops such as the sweet potato Ipomoea batatas (Convolvulaceae). Thus special attention is needed for the expansion of the species range. We surveyed present range of distribution of C. marmorata in Tottori Prefecture, by checking S. altissima growing roadside along main national roads. The species was widely found from various sites of Tottori Prefecture. During the survey, we also found colonies of an exotic aphid Uroleucon nigrotuberculatum (Hemiptera: Homoptera: Aphididae) which is also parasitic on S. altissima from various sites in the prefecture.