一种危害鹅掌楸的新叶蜂  

A New Species of the Genus Megabeleses from China (Hymenoptera, Tenthredinidae)

作　　者：萧刚柔[1] 

机构地区：[1]中国林业科学研究院林业研究所

出　　处：《林业科学研究》1993年第2期148-150,共3页Forest Research

摘　　要：本文记述了中国叶峰一新种——鹅掌楸叶蜂(Megabeleses liriodendrovorax),并附有形态特征图。In the present paper a new species of sawflies from China is described, which is an important destructive forest insect pest of Liriod-endron chinense (Hemsl.) Sarg. The type specimens are kept in the collection of forest insects in the Research Institute of Forestry, CAF. Megabeleses liriodendrovbrax n. sp.Female: Robust; head black, shing; palpi brownish black; antennae black. Thorax black, shining; cenchri brownish black; wing hyaline, apex slightly infuscated; vein and stigma black; legs black; front and middle tibiae and tarsi whitish brown; back of coxae and first trochanters of hind leg with white spots. Abdomen black with bluish lustre; most of lateral sides of abdominal tergum white; sawsheath black. Anterior margin of clypeus slightly emarginate; middle fovea round, deep; frontal carina and antennal furrows well defined; postocellar area convex; coronal sutures and lateral sutures distinct; OOL:POL:OCL = 2.951:1.4; length of postocellar area:width = 1.3:1. Body length 10~11 mm. Antennae with 9 segments; length of third antennal segment: total length of fourth and fifth antennal segments = 1:1.7, Punctures of head fine and dense; clypeus and frontal ridges rugosely punctate; punctures of thoracic nota fine and moderately dense; thoracic pleura with coarse and dense punctures forming reticulate pattern; punctures of first abdominal tergum coarse and dense; remaining terga with rather fine and sparse punctures. Sawsheath projecting beyond abdominal apex and apex of saw projecting beyond sawsheath; lancet as in fig. 2. Body with pale yellowish pubescence; wing membrane with numerous black short hairs.Male: Hairs of antennae much longer; hind coxae and first trochanters of hind leg and most of lateral sides of first abdominal tergum white. Punctures of head, thorax, and abdomen rather coarse and dense; OOL:POL :OCL = 2.9:1:2.4; length of postocellar area:width = 1.4:1. Body length 9~ 10mm; length of third antennal segments:length of fourth plus fifth antennal segments = 1:1.9. Subgenital plate round (fig. 3)

关 键 词：鹅掌楸 危害 叶蜂 

分 类 号：S763.722.1[农业科学—森林保护学]