内蒙褐蛉—新种及二中国新记录种(脉翅目:褐蛉科)

A NEW SPECIES OF BROWN LACE-WINGS (NEUROPTERA:HEMEROBIIDAE) FROM NEI MONGOL AND TWO NEW RECORDS OF CHINA

脉翅目(Neuroptera)褐蛉科(Hemerobiidae)的成虫和幼虫均为肉食性昆虫,主要捕食蚜、蚧及叶螨等重要害虫,在生物防治中有利用前途。我国的褐蛉区系很丰富,已知百余种,许多是我国特有的种类。内蒙古的褐蛉科尚缺乏系统调查研究,蒙古人民共和国的褐蛉则报道有16种(Makarkin,1984),仅有少数几种与内蒙是共同的,但值得参考。就我们所掌握的标本来看,内蒙古的褐蛉至少有17种,本文记述一新种和二中国新记录种,模式标本保存在北京农业大学昆虫标本室。

This paper reports on three species of the family Hemerobiidae from Nei Mongol. Among them, one is a new species of the genus Sympherobius, and the other two: Hemerobius matginatus Stephens and Micromus paganus (L.) are new records for China. SympherobiuspiceaticusYang et Yan, sp. nov. (Figs. 1-7)Holotype (?) , allotype (?), paratypes 5 (?) (?), Nei Mongol: Tumd Left B., Mt. Daqingshan, 2300m, 1978-Ⅶ-23, collected on Picea asporata Mast.A distinct species with pale brownish forewings (Fig. 1), and two (rarely three) branches of Rs. The male genitalia (Figs. 2, 3) armed with three spines on the ectoprocts and somewhat allied to S. elegans (Stephens ), but the 2nd spine is very big and the 3rd spine very small, the gonarcus and parpmeres as in Figs. 4 and 5. The apex of female abdomen is very peculiar, the 8th tergite separate with the sternite limits below the spiracle; and the 9th tergite divided into a pair of large plates, and a large subgenital plate like the true sternite (Fig. 6), the spermatheca dark and as in Fig. 7.The type specimens are kept in the Insect Collections of Beijing Agricultural University.