【摘要】 玉米螟普遍发生严重危害玉米。1988年至1990年,作者对丽江县玉米螟种类及其生物学特性进行了调查研究,结果表明,主要种类为亚洲玉米螟(Qstrinia furnacalis)和丽江麻螟新亚种(Qstrinia zealis lijiangensis ssp. ncv.)后者的寄主植物除大麻外,还危害玉米。是我省首次报导危害玉米的新亚种及国内分布新记录。该种雄虫中足胫节增厚具有深槽和与胫节等长的毛撮,雄虫外生殖器抱器腹具刺区显著短于无刺区,端刺有密集组。两种玉米螟每年发生一代。玉米被害株率为8.3％～34.4％;大麻为46％～94％。本文对丽江麻螟新亚种主要外部形态特征作了描述并撰写了两种玉米螟的生物学特性。更多还原

【Abstract】 Maize, is one of the staple food crops in Yunnan Province. Corn borers are major inscet pests of maize and they do great harm to maize. We made investigations on spcies of corn borers and their biological characters. at Lijing, Yunnan Province in 1988 to 1990. The investigations showed that the major species was Asian Corn Borer (ACB), Ostrinia furnacalis,(Guenee), and Lijing Hemp Borer(LHB), Ostrinia zealis Lijingensis ssp. nov.LHB does harm not only to hemp, but also to maize. Its harm to maize was first discovered and reported from Yunnan Province and is diagnosed as a new subspecies which is harmful to maize. This is also a new record of its distribution in China. Male has greatly inflated middle tibia with prominent groove and large scale-tuft, bearing abundant long hair and specialized curved hairs, outer tibial spur more than half length of inner one in both sexes. Male genitalia. Uncus triobed; middle lob not much producted than lateral lobes; lateral lobes broadened ventrad; more than twenty setae on its base. The Clasper proportionally very large; shaft becoming narrow ventrad, its dorsallobe very broad; bearing three rows spines: the first group spines longer, about 19 to 20 spings, the second group flattened scale-like, its distal sharped and rented in 4 or 5; the third group small and thick about 7 spines with a fine sate on it. Sacculus sclerotized ridge beyond the cornor of distal and dorsal edge very short, bearing usually two large spines; the spines always varying in size and with compact group, the sclerotized ridge distinctly shorter than the non-spine area, lengthen of its propertion about 1:1.6. Wing Expense: ♂23～30mm,♀26～32mm; body length; ♂12.5～15mm,♀14～17mm. Type: Holotype, ♂Dayan, (No. 89001) Lijiang, Yunnan,2 Ⅵ,1989, alt.1890m by He shi-zhong; The type specimen is deposited in Plant Protection Department, Yunnan Agricultural University. Both ACB and LHB have one generation annually. They overwinter as last-instar borers. The damagesranged 8.3％～34.4％ to maize and 46％～94％ to hemp. The present paper presents a description of the morphological characters of the new subspecies——LHB and the biological characters of both ACB and LHB. In addition, the strategy and methods of controlling these two peste are also suggested in this paper.更多还原