Systematic Study of the Subfamily Cephalciinae (Hymenoptera, Pamphiliidae) Injuring Conifers.

1. 1991年6月17日至26日在北海道的中山顶、努卡比和山田温泉以及1991年8月4日至9日在长野县八岳山的米诺托采集了成年头叶蜂。对大坂府立大学和科比大学的亚科模式标本进行了研究.通过对成虫形态学的比较研究，发现以下特征可用于分类：斑点的形状和颜色（特别是头和腿上的斑点）;头的结构（特别是触角旁区的标点）;以及雄性生殖器的构造。前翅肋细胞上有无毛被认为是区分两个密切相关的属的重要依据，但本研究表明，该特征在属水平上不稳定，因此对属的分类没有帮助.订正了日本产松叶蜂属松叶蜂亚属的种。在先前在日本记录的四种Itycorsia中，一种（“olyda laraventris（Giraud）”）被发现被错误鉴定和未描述，另外四种未描述或未记录的物种在日本被确认，其中一种被描述为新的名称olyda flaviventris（参考编号1）4。本文记述了1990年和1991年分别在四川省和台湾省采得的三种扁叶蜂亚科新记录种：四川扁叶蜂Cephalcia sichuanica（Sictiuan ;参考文献号2）、台湾扁叶蜂Escholida taiwana和台湾扁叶蜂Cephalcia chui（均来自台湾;参考文献号3）。

1. Collection of the adult cephalciine sawflies was made at Nakayama-toge, Nukabira and Yamda-onsen in Hokkaido from June 17 to 26, 1991, and at Minoto in Yatsugatake Mountains, Nagano Prefecture from August 4 to 9, 1991. Type material of the subfamily housed in the University of Osaka Prefecture and in Kobe University was studied.2. As a result of comparative studies of the adult morphology, the following characters have been found useful for classifying the Cephalciinae : shape and color of the maculation (those on the head and legs, in particular) ; structure of the head (punctuation of the paraantennal field, in particular) ; and configuration of the male genitalia. Presence or absence of pilosity on the costal cell in the forewing was considered important in distinguishing two closely related genera Acantholyda and Cephalcia, but the present study has shown that the character is not stable at the genus level and thus not useful for generic classification.3. Japanese species of the subgenus Itycorsia of the genus Acantholyda were revised. Of the four species of Itycorsia previously recorded from Japan, one ("Acantholyda laricis (Giraud)") has been found misidentified and undescribed, and four additional undescribed or unrecorded species have been recognized in Japan, one of them being described as new under the name of Acantholyda flaviventris(reference no. 1)4. Three species of Cephalciinae collected in Sichuan Province, China, in 1990, and in Taiwan in 1991 were studied and described as new : Cephalcia sichuanica (Sictiuan ; reference no. 2), Acantholyda taiwana and Cephalcia chui (both from Taiwan ; reference no. 3).