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Systematic And Faunistic Study On The Parasitic Wasps Of Scale Insect In North China

Posted on:2003-11-24Degree:MasterType:Thesis
Country:ChinaCandidate:G Y WuFull Text:PDF
GTID:2133360062985159Subject:Agricultural Entomology and Pest Control
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The kind of scale insect is numerous, the difficulty of prevention and cure often causes significant calamity on production; The taxonomic study of the parasitic wasp of scale insect is not only the needs of the insect biological control ,but also is an important work of parasitic wasp basic research.In this paper, the parasitoid were collected from 12 provinces of the north Yellow river basin, including Heilongjiang, Jilin, Liaoning , Neimenggu, Qinghai, Xinjiang, Ningxia, Shanxi, Shanxi, Hebei, Shandong and Henan were researched. 112 species of wasps were arranged in this paper. They belonged to 54 genera 5 families. Among them, Encyrtidae, 42 genera, 88 species; Aphelinidae, 8 genera, 20 species; Eulophidae, 2 genera, 2 species; Pteromalidae, 1 genus, 1 species; Thysanisae, 1 genus, 1 species. All genera and species were descripted according to the style of Chinese Animal Fauna. And 9 new species were reported; 11 genera, 2 species new recorded to China were presented (in which 2 species new to science; 2 genera new recorded to China were already published; and 1 new species; 3 genera, 2 species new recoreded to China will been published in this year). References, characters, host recorded and destribution of genera; References, characters, host recorded and destribution of species were given. New species were distinguished with similar species. All specimens are deposited in Zhejiang University.According to the terrestrial zoogeographic regions in the world, the faunal type of wasps can be divided 1 Hypes. There are more spcies distributed in Plaearctic region, in both Plaearctic and Oriental regions, which are 53.6% and 28.6%. The wasps geographical region can be divided into 16 combinations in China, and there are more numbers of species distributed in Northeast region (24.1%) and North China regional.4%).Baeocltaris Mayr [ new to China)Baeocharis longiclavatus sp . n.Host: unkown .Distribution: Liaoning ( Fuxin ).Specimen examined: Holotype ?. Liaoning Fuxin( N. 42.0 ? E. 121.6 ?, 1994-7-27, Louju-xian, C9506-74.Diagnosis: this species is similar to Baeocharis Pascuorum Mayr, but can be distinguished by: 1). The body length of the former is of 1.44 mm , the latter is of 1.18 mm; 2). The length of clava is 0.4 times of funicle, the latter is 0.2 times; 3). The former have metal lustre only in head, the latter have metal lustre both in head and thorax.Dusmetia Mercet | new to China | Dusmetia latiscapa sp. n.Host: unknownDistribution: Heilongjiang ( Jingbohu), Liaoning ( Fuxin ).Specimen examined: Holotype ?, Heilongjiang Jingbohu, 1995-8-16, Louju-xian , C9506-29; Paratype 1 ?, Liaoning Fuxin, 1995-7-20, Louju-xian , C9506-87; 1 5 , Liaoning Fuxin, 1994-7-27, Louju-xian , C9506-70.Diagnosis: this species is similar to Dusmetia cardinalis Hoffer, but can be distinguished by: 1). The end of 4th funicle and 5th, 6th funicle are white colour, 3-6 section of the latter funicle is white colour; 2). The scapus 2.7 times as long as wide, the latter is 5 times; 3). Forewing complete degeneration, the latter forewing is not complete degraded ; 4). The head, thorax and gaster of theformer presents dark brown colour, the latter submits red brown colour.Echtltroplexiella Mercet | New to China) Echthroplexiellu brachyptera sp. n.Host: Eriococcide.Distribution: Liaoning ( Fuxin ).Specimen examined: Holotype ? Liaoning Fuxin. 1995-7-20, Lou ju-xian , C9506-85; Paratypel^, Liaoning Fuxin, 1994-7-27, Lou ju-xian , C9506-64.Diagnosis: This species is similar to Echthroplexiella emeljanovi Trjapitzinare ,but can be distinguished by: 1) the width of the frontovertex obviously shorter than 0.2 times of the head width, the latter longer than 0.2 times, and at least as long as the 0.25 times; 2) scapus 2.7 times as long as width, the latter 4.4 times; 3) wing of the former degenerated, the latter is developed; 4) ovipositor shorter than 0.2 times of gaster length, the latter longer than 0.2 times of gaster length.Ectroma Westwood \ New to China] Ectroma loui...
Keywords/Search Tags:scale insect, parasitoid, insect fauna, Encyrtidae, Aphelinidae, Eulophidae, Pteromalidae, Thysanisae, new species, China
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