中国粘叶蜂属一新种(膜翅目:叶蜂科)

记述了采自中国河南省太行山区和福建光泽的叶蜂科粘叶蜂属1新种:半环粘叶蜂Caliroa semicincta Wei,sp.nov.。该新种与欧洲种C.annulipes(Klug,1814)比较近似,但后足胫节基部3/5和基跗节基部4/7白色,触角第3节等长于端部4节之和,前翅2r脉等长于Rs脉第4段,锯腹片锯刃内外侧均具2枚明显的亚基齿,刃间膜等宽于锯刃,并明显鼓起,节缝刺毛带很宽,最宽处等宽于带间距等,与后者不同。新种模式标本保存于中南林业科技大学模式昆虫标本室。     

18S rDNA的研究进展及其在膜翅目昆虫分子系统学中的应用

本文综述了18S rDNA的研究进展,主要包括了18S rDNA的结构研究,18S rDNA的网络资源利用和18S rDNA在膜翅目昆虫中的应用。     

韩国新纪录属纹翅赤眼蜂属及一新种记述(膜翅目,赤眼蜂科)

首次报道了纹翅赤眼蜂属Lathromeris Foerster在韩国的分布,并记述了1个新种Lathromeris koreanica Hu,Lin et Kim与1个新纪录种Lathromeris germanica Girault.新种Lathromeris Koreanica与Lathromeris tumicalvata Lin相似,但新种缘前脉到痣脉下有明显的暗褐色斑块;缘前脉端部1/4处和缘脉基部1/9处有断痕.     

中国新纪录属副赤眼蜂属及一新种记述(膜翅目,赤眼蜂科)

首次报道了副赤眼蜂属Paratrichogramma Girault在中国及古北区的分布,并记述了采自新疆的1新种,塔里木副赤眼蜂Paratrichogramma tarimica sp.nov.,本种与Paratrichogramma giraulti Hayat et Shuja很相似,但本种前翅翅面纤毛更稀少,缘毛极短,产卵管明显长于中足胫节,雄性触角第1索节远短于第2索节.模式标本保存在新疆大学生命科学与技术学院昆虫研究室.     

Effect of phorid fly density on the foraging of Atta vollenweideri leafcutter ants in the field

Leafcutter ants in the genus Atta (Hymenoptera: Formicidae: Attini) are considered major pests of agriculture and forestry in the Neotropics. Phorid flies (Diptera: Phoridae) have been proposed as viable candidates for biological control of ants because of the importance of their trait‐mediated effects on their hosts. However, the impact of different densities of phorid flies has never been assessed in the field. Experiments were conducted by isolating 3‐m sections of Atta vollenweideri Forel foraging trails with tunnels, and sampling ants in trails with 0, 1, or 4 Eibesfeldtphora trilobata Disney female parasitoid flies. Samples were collected every 30 min from these trails. We also collected a sample before introducing the parasitoids and another one 30 min after removing them from the trail. We measured traffic of ants on the trails, weight and type of plant material transported, and the proportion and size of the workers collected. The presence of phorids on the trails reduced the ant traffic and amount of plant material transported into the nests and decreased the proportion of workers on the trails in the size range preferred as hosts by the flies. The effect on worker size, as well as the lag effect recorded after phorids were removed from the tunnels, was more pronounced with four phorids. The presence of phorids also affected the weight of monocotyledon and dicotyledon material transported. Even at the minimum density possible, phorids significantly influenced a key aspect of the colony life, the food intake through foraging. From an applied point of view, our results show that releases of these phorids into the field should not necessarily involve many individuals to reduce foraging by A. vollenweideri, making them potentially useful candidates for biological control of these ants.     

Colony foraging allocation is finely tuned to food distance and sweetness even close to a bee colony

Social bee colonies can allocate their foraging resources over a large spatial scale, but how they allocate foraging on a small scale near the colony is unclear and can have implications for understanding colony decision‐making and the pollination services provided. Using a mass‐foraging stingless bee, Scaptotrigona pectoralis (Dalla Torre) (Hymenoptera: Apidae: Meliponini), we show that colonies will forage near their nests and allocate their foraging labor on a very fine spatial scale at an array of food sources placed close to the colony. We counted the foragers that a colony allocated to each of nine feeders containing 1.0, 1.5, or 2.0 M sucrose solution [31, 43, and 55% sucrose (wt/wt), respectively] at distances of 10, 15, and 20 m from the nest. A significantly greater number of foragers (2.6–5.3 fold greater) visited feeders placed 10 vs. 20 m away from the colony. Foraging allocation also corresponded to food quality. At the 10‐m feeders, 4.9‐fold more foragers visited 2.0 M as compared to 1.0 M sucrose feeders. Colony forager allocation thus responded to both differences in food distance and quality even when the travel cost was negligible compared to normal colony foraging distances (10 m vs. an estimated 800–1 710 m). For a nearby floral patch, this could result in unequal floral visitation and pollination.     

Variability in the reproductive biology and in resistance against Cotesia sesamiae among two Busseola fusca populations

Two mitotypes of Busseola fusca (Fuller) (Lepidoptera: Noctuidae) named KI and KII, co‐exist in Kenya. Individuals of KII are more widely distributed than those of KI. The present study assessed whether this was due to differences in their reproductive potential and/or in their resistance to the braconid Cotesia sesamiae Cameron, which is the most common larval parasitoid of B. fusca in the region. Two populations of the parasitoid, one from the coastal and one from the inland regions of Kenya, which differ in their ability to develop in B. fusca, were tested. Virgin KII females started to call sooner during the night than KI females. Female fecundity and egg viability were significantly lower for the heterogamous than the homogamous crosses. Cotesia sesamiae from the inland produced larger progeny in KI than in KII host. Cotesia sesamiae from the coast did not develop in either host. Despite their long time co‐existence in the same geographical area, KII and KI conserved biological differences in terms of time of calling, fecundity, fertility and resistance against the larval parasitoid, C. sesamiae. This might explain the wider distribution of KII as compared to KI in Kenya.     

新疆爱丽缨小蜂属两新种及一新纪录种记述(膜翅目,缨小蜂科)(英文)

记述采自新疆的爱丽缨小蜂属ErythmelusEnock2新种,温泉爱丽缨小蜂Erythmelus(Erythmelus)wenquanensis sp.nov.,短索爱丽缨小蜂Erythmelus(Erythmelus)brevifuniculatus sp.nov.,中国1新纪录种,盲蝽爱丽缨小蜂Erythmelus(Erythmelus)lygivorus Viggianiet Jesu,提供了新疆爱丽缨小蜂属5个种的检索表。模式标本保存在新疆大学生命科学与技术学院昆虫研究室和福建农林大学生物防治研究所。温泉爱丽缨小蜂,新种Erythmelus(Erythmelus)wenquanensis sp.nov.(图1~4)正模♀,新疆温泉县,2001-07-16,胡红英采。副模:2♀♀,来源同正模;1♀,和硕县,2001-08-07,胡红英采;5♀♀,和静县,2001-08-09,胡红英采;2♀♀,托里县,2007-07-29,张铁钢采;1♀,塔城,2007-07-30,张晶晶采;1♀,托里县,2007-07-29,何茜采;1♂,和丰县,2007-08-01,徐建华采。分布:新疆(和硕县、和静县、塔城、和丰县、托里县、温泉县)。新种外部形态特征与E.goochiEnock很相似,主要区别是:新种的第6索节略短于第4、5索节之和;棒节短于柄节至第4索节长度之和;前翅缘毛明显长于翅宽。词源:新种以模式产地命名。短索爱丽缨小蜂,新种Erythmelus(Erythmelus)brevifuniculatussp.nov.(图5~8)正模♀,新疆精河县,2001-07-15,胡红英采。副模:1♀,1♂,来源同正模;6♀♀,4♂♂,乌鲁木齐市,2001-08-22,胡红英采;1♀,新源县,1997-08-07,马德英采;2♀♀,2♂♂,新源县,2001-07-16,胡红英采;1♀,奎屯市,2001-07-17,胡红英采;2♀♀,石河子市,2001-07-12,胡红英采;2♀♀,乌鲁木齐市郊,2001-07-22,孙涛采;1♀,和硕县,2001-08-07,胡红英采;1♀,阿克苏市,2001-06-18,吴卫采;2♀♀,托里县,2007-07-29,徐建华采;1♀,额敏县,2007-07-29,张铁钢采;1♀,额敏县,2007-07-30,何茜采。分布:新疆(阿克苏市、和硕县、乌鲁木齐市、石河子市、奎屯市、精河县、托里县、额敏县、温泉县、新源县)。新种与本属中的任何种都有明显的差异,与另1新种温泉爱丽缨小蜂Erythmelus(Erythmelus)wenquanensis sp.nov.较相似,区别之处:中胸盾片端部淡黄褐色;第4索节等长于第6索节的一半;前翅缘毛长于翅宽的2倍;前翅的长宽比值大于5;雄性外生殖器的长度等长于后足胫节。词源:新种种名brevifuniculatus为组合词,由拉丁词brevi-(意为"短的")和funiculus(意为"索节")组成,指新种索节粗短。盲蝽爱丽缨小蜂Erythmelus(Erythmelus)lygivorus VigganisetJesu中国新纪录(图9~11)研究标本:1♀,新疆托里县,2007-07-29,张铁钢采;1♀,额敏县,2007-07-29,徐建华采。分布:新疆(托里县、额敏县);法国,匈牙利,意大利,西班牙。     

针尾姬蜂属(膜翅目,姬蜂科)及一新种记述

报道在我国发现的针尾姬蜂属Pion Schiφdte,1839的种类:沁源针尾姬蜂P.qinyuanensis Chen,Shenget Miao,1998,宜丰针尾姬蜂,新种P.yifengensis sp.nov.。指出了新种与近似种的鉴别特征并附彩色特征图。     

中国短细蜂属种类记述(膜翅目:细蜂科)

记述中国短细蜂属Brachyserphus Hellén 5种,其中包括4新种:周氏短细蜂Brachyserphus choui He et Xu,sp.nov.、天目山短细蜂Brachyserphus tianmushanensis He et Xu,sp.nov.、贵州短细蜂Brachyserphus guizho...