作 者 ：杨忠岐 谷亚琴
期 刊 ：林业科学 1995年 31卷 3期 页码：223-232
关键词：落叶松毛虫；卵寄生蜂；膜翅目；细蜂总科；小蜂总科；生物学；迈金小蜂属；新种；
Keywords:Dendrolimus superans sibiricus T., Egg parasitic Wasps, Hymenoptera, Serphoidea, Chaecidoidea, Bionomics, Mesopolobus, New species,
摘 要 ：调查发现,大兴安岭落叶松毛虫Dendrolimus superans sibiricus Tschetverikov共有5种卵寄生蜂(其中包括1个新种)。它们的总寄生率达54.63%(±1.70%),在自然控制这种害虫上发挥着重要作用。同时,对5种卵寄生蜂作了较为详细的形态描述,并对一些误名作了更正。这5种卵寄生蜂为:落叶松毛虫黑卵蜂Telenomus tetratomus Thomson(细蜂总科);松毛虫卵宽缘金小蜂Pachyneuron solitarium(Hartig),松毛虫迈金小蜂Mesopolobus superansi Yang et Gu(新种),落叶松毛虫卵跳小蜂Ooencyrtus pinicolus(Matsumura)和松毛虫赤眼蜂Trichogramma dendrolimi Matsumura(小蜂总科)。
Abstract:The present paper deals with the survey and taxonomic study of egg parasitic wasps of larch caterpillar, Dendrolimus superans sibiricus Tschetv.,in Daxinganling Mis. forests. Totally 5 wasp species were reared with 54.63(± 1.70) percent of the pest eggs were parasitized by them. It was showed that the egg parasitic wasps played a very important role in reducing the pest population in the Mis. forests. The 5 species, including a new pteromalid, are as follows. 1. Proctotrupoidea 1)Telenomus tetratomus Thomson (Figs 1 - 4 ) (Scelionidae)Chalcidoidea 2)Pachyneuron solitarium (Hartig) (Pigs 5 - 8 ) (Pteromalidae)3)Mesopolobus superansi Yang et Gu, sp. nov. (Figs 9-13) (Pteromalidae)4)Ooencyrtus pinicolus (Matsumura) (Figs 14-16) (Encyrtidae)5)Trichogramma dendrolimi Matsumura (Figs 17-19) (Trichogrammatidae)Mesopolobus superansi Yang et Gu, sp. nov. (Figs 9-13)Female: 1.9-2.2mm long. Blue-green with metallic lustre; gaster with posterior margin of tergite 1 to end purple-brown; antenna and legs having all segments except coxae stain-yellow with slight brown; wings hyaline.Head and thorax densely raised-reticulate. Head without occipital carina,the broadth 2.2 times as its length in dorsal view, 1.25 times as its height in facial view, and wider than thorax and gaster (50:42:46); POL 1.8 times as long as OOL; lateral ocellus separated from eye margin by 2.3 times its oblong diameter ; toruli ovate in shape,separated from each other only by 1/2of their own width; clypeal margin slightly excised, about 0.23 times of the head width; scrobes shallow. Antenna (Fig 10) 13-segmented with 3 anelli.Thorax wide and flat; pronotum with collar in middle part of anterior margine carinate; notauli not deep, but reaching 3/5 length of the mesoscutum;length of mesoscutum only 0.6 times of its width: scutellum longer than wide (26:22), and as long as mesoscutum. Propodeum (Fig. 13) with plicae and without median carina, in its median area having weak keels growing from anterior margin and extending posteric-laterally, and in its lateral parts reticulate. Forewing (Fig. 12) with marginal vein about 1.6 times of stigmal vein. Gaster (Fig. 13) as long as head and thorax combined, conic-ovate and pointed towards the tip.Male: 1.6--1.8mm long. Resembles female, but colour of body much brighter, with golden-green lustre; posterior half of gaster tergite 1 orange -yellow, and the other tergites purple-brown; antenna (Fig. 11) with scape and funicle 4 and 5 white, the other segments stain-yellow and hasal part of club brown; on stigmal vein of forewing with a small fumeus spot;gaster shorter than head plus thorax.The new species is close to the Japanese M. tabatae (Ishii), 1938, which is an egg parasitoid of Dendrolimus albolincatus Matsumura, but can be distinguished by the key below:1 Body 1.9-2.2mm long: head only slightly wider than thorax (50:42) ;the lateral ocellus separated from eye margin by 2.3 times its own oblong diameter; toruli separated each other by 1/2 of their own width; scutellum longer than wide (26:22): propodeum without median carina; marginal vein of forewing only l.6 times of stigmal vein……………… Mesopolobus superansi sp. nov.2 Body 3.1mm long ; head much wider than thorax (50:32) ; the lateral ocellus separated from eye margin only by its own diameter; toruli separated each other by their own width; scutellum as long as wide;propodeum having median carina; marginal vein of forewing 2 times of stigmal vein…………Mesopolobus tabatae (Ishii)
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