TWO NEW SPECIES OF MICROGASTER LATREILLE (HYMENOPTERA: BRACONIDAE) FROM CHINA*

Abstract The present paper describes two new species of Microgaster Latreille, 1804, viz: M. longiterebra sp. nov. (♂) and M. longicaudatus sp. nov. (♂). M. longiterebra sp. nov. is described from Kunming, Yunnan Prov. in China closely related to M. subcompletus, but differs from the latter in the combination of the following features: 1) APOL as long as OD; 2) Mesonotum strongly punctate on anterior 2/ 3) r shorter than width of stigma; 4) cu‐a of hind wing medially curved; 5) Apex of hypopygium ending far beyond apex of abdomen. M. longicaudatus sp. nov. is described from Tianmushan, Zhejiang Prov. in China closely related to M. ductilis, but differs from the latter in the combination of the following features: 1) middle and hind femora reddish yellow only with apical 1/4 blackish; 2) 1‐SR 0.5 times as long as 1‐M; 3) the hairy part of ovipositor sheath 0.5 times as long as hind tibia; 4) tergite 3 with slightly weaker rugosity. The type specimens are deposited in Zhejiang University, Hangzhou, China.     

云南小腹茧蜂属一新种记述（膜翅目：茧蜂科，小腹茧蜂亚科）

本记述采自云南昆明的小腹茧蜂属Microgaster Latreille一新种,云南小腹茧蜂Microgaster yunnanensis Xu et He,sp nov．     

小腹茧蜂属二新种一新记录种（膜翅目：茧蜂科：小腹茧蜂亚科）

记述采自辽宁、河南、山东、浙江等省的小腹茧蜂属Ｍｉｃｒｏｇａｓｔｅｒ Ｌａｔｒｅｉｌｌｅ２新种和１中国新记录种;刻胸小腹茧蜂Ｍｉｃｒｏｇａｓｔｅｒ ｐｕｎｃｔｉｔｈｏｒａｘ,ｓｐ．ｎｏｖ．、玉主螟小茧蜂Ｍｉｃｒｏｇａｓｔｅｒ ｏｓｔｒｉｎｉａｅ,ｓｐ．ｎｏｖ．和平原小腹茧蜂Ｍｉｃｒｏｇａｓｔｅｒ ｃａｍｐｅｓｔｒｉｓ Ｔｏｂｉａｓ１９６４,ｎｅｗ ｒｅｃｏｒｄ。模式标本保存在浙江大河保护系昆虫标本     

小腹茧蜂属二新种记述（膜翅目∶茧蜂科∶小腹茧蜂亚科）

本记述采自山东、四川和浙江省的小腹茧蜂属Ｍｉｃｒｏｇａｓｔｅｒ Ｌａｔｒｅｉｌｌｅ２新种：盘脉小腹茧蜂Ｍｉｃｒｏｇａｓｔｅｒ ｄｉｓｃｏｉｄｕｓ,ｓｐ．ｎｏｖ．和红褐小腹茧蜂Ｍｉｃｒｏｇａｓｔｅｒ ｆｅｒｒｕｇｉｎｅｕｓ,ｓｐ．ｎｏｖ．。模式标本保存在浙江大学植物保护系昆虫标本室。     

The parasitoid complex affecting Choristoneura rosaceana and Pandemis limitata in organically managed apple orchards

Parasitism and density of obliquebanded leafroller,Choristoneura rosaceana (Harris), and thethree-lined leafroller, Pandemis limitata(Robinson) (Lepidoptera: Tortricidae), were studied in 1998–2001 in organically managed apple orchards in the southern interior of British Columbia, Canada. The density of the overwintered generation of leafrollers in spring was significantly higher than thedensity of the first generation in summer. There was a significant inverse correlation between the density of leafrollers and the percent parasitism within generation and therefore parasitoids may play a role in controlling leafroller density. Parasitism of the overwintered generation (means between 5.5 and 24.7%) was significantly lower than parasitism documented in the summer generation (means up to 67.9%). The parasitoid complex recorded as emerging from these leafrollerpopulations in 1998–1999 included 30 species, of which eight have not been previously recorded in the literature as parasitoids of either leafroller species. The most frequently occurring parasitoids included Apophuasimplicipes (Cresson) and two species of Glypta(Hymenoptera: Ichneumonidae), Macrocentrus linearis (Nees), Meteorus trachynotus Viereck, Apantelespolychrosidis Viereck, Apanteles atra (Ratzeburg) and Microgaster epagoges Gahan (Hymenoptera: Braconidae), Colpoclypeus florus (Walker) and one Sympiesisspecies (Hymenoptera: Eulophidae). All of these more common parasitoids, except Glypta sp. 1 and M. epagoges, were recorded parasitizing leafroller hosts in both leafroller generations. The number of days to adult parasitoid emergence, when field collected parasitized hosts were held at 20°C, was recorded for four of the parasitoid species. Meteorus trachynotus was found to emerge early enough in spring toparasitize the few remaining overwintered early instar leafrollers. Glypta sp. 1, A. simplicipes and one Apanteles species emerged to coincide with the first generationin the summer.     

小腹茧蜂属一新种记述（膜翅目：茧蜂科：小腹茧蜂亚科）

本文记述采自广西的小腹茧蜂属ＭｉｃｒｏｇａｓｔｅｒＬａｔｒｅｉｌｌｅ一新种,黄褐小腹茧蜂Ｍｉｃｒｏｇａｓｔｅｒｒａｖｕｓｓｐ．ｎｏｖ。     

黑龙江小腹茧蜂属二新种记述（膜翅目：茧蜂科，小腹茧蜂亚科）

记述采自黑龙江省的小腹茧蜂属Microgaster Latreille 二新种：黄腹小腹茧蜂 M. flaviventris sp. Nov. 和伊春小腹茧蜂M. yichunensis sp. Nov.。模式标本保存在浙江大学植物保护系昆虫标本室。     

中国小腹茧蜂属二新记录种（膜翅目：茧蜂科：小腹茧蜂亚科）

本记述了分布于我国的小腹茧蜂属二新记录种,球小腹茧蜂Ｍｉｃｒｏｇａｓｔｅｒ ｇｌｏｂａｔａ（Ｌｉｎｎａｅｕｓ）１７５８和三色小腹茧蜂Ｍｉｃｒｏｇａｓｔｅｒ ａｓｒａｍｅｎｅｓ Ｎｉｘｏｎ１９６８。     

中国小腹茧峰属(膜翅目:茧蜂科 :小腹茧蜂亚科)二新种记述(英文)

本文记述了采自云南省和浙江省小腹茧蜂属MicrogasterLatreille ,180 4二新种 :采自云南的长管小腹茧蜂M .longiterabra ,sp .nov .(♀ )与M .subcompletus相似 ,但以下特征可以区别 :1)前后单眼间距与单眼直径等长 (后者长于单眼直径 ) ;2 )中胸盾片前方 2 / 3具刻点 (后者前方 1/ 2具刻点 ) ;3)r脉短于翅痣宽 (后者与翅痣宽等长 ) ;4 )后小脉弯向翅基 (后者直 ) ;5)肛下板顶端超过腹部末端 (后者未达腹部末端 )。采自浙江天目山的长尾小腹茧峰M .longicaudatussp .nov .(♀ )与M .ductilis相似 ,但以下特征可以区别 :1)中后足腿节红黄色 ,仅末端黑褐色 (后者黑色 ) ;2 ) 1 RS脉长为 1 M脉 1/ 2 (后者为 1/ 3) ;3)产卵管鞘长为后足胫节 1/ 2 (后者为 2 / 3) ;4 )腹部第 3背板具皱纹 (后者光滑 )。模式标本保存在浙江大学植保系寄生峰标本室。     

中国小腹茧蜂属二新种记述(膜翅目,茧蜂科,小腹茧蜂亚科)

记述了采自黑龙江、吉林、辽宁和湖北省小腹茧蜂属M.icrogaster Latreille,18042新种,短管小腹茧蜂M.breviterebrae sp．nov．和长距小腹茧蜂M．longicalcar sp．nov．。短管小腹茧蜂M.breviterebrae sp．nov．(♀)与M．grandis相似,但以下特征可以区别：1)翅痣下方具暗斑(后者无);2)触角端前节长为宽的1．2倍(后者为2倍);3)头顶光滑(后者具皱纹);4)腹部第3背板光滑(后者具皱状刻点);5)后足胫节黑色(后者红黄色)。采自黑龙江镜泊湖、吉林长春、辽宁(阜新、大连、沈阳)。长距小腹茧蜂M．longicalcar sp．nov．(♀)与短管小腹茧蜂M.breviterebrae sp．nov．相似,但以下特征可以区别：1)1—RS脉长为1—M脉1／2(后者为1／3);2)r脉与翅痣宽等长(后者明显短于翅痣宽);3)后足胫节内距长为基跗节6／7(后者为1／2);4)产卵管鞘长为后足胫节1／2(后者为1／3);5)前后单眼间距与单眼直径等长(后者短于单眼直径)。采自湖北房县。本文附中国小腹茧蜂属分种检索表。模式标本均保存在浙江大学植保系寄生蜂标本室。