A New Hymenopterous Parasite on Aspidiotus Perniciosus Comst.*
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چکیده
منابع مشابه
Polymorphic Spermatozoa in the Hymenopterous Wasp Dahlbominus.
Studies with the light and electron microscope reveal that at least five different types of spermatozoa are produced during spermatogenesis in the arrhenotokous hymenopteran. Dahlbominus fusciupennis (Zett. Eulophidae). Two of the types differ from the others in length, one type lacks a continuous spiral helix in the head piece, and two differ from the others in the direction of the helical coi...
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Coconut scale, Aspidiotus destructor Signoret (Homoptera: Diaspididae), is a quarantine pest of banana (Musa spp.) and many tropical crops. Irradiation was examined as a potential phytosanitary treatment to control coconut scale. Dose-response tests were conducted with second-stage nymphs, adult females without eggs, and adult females with eggs at a series of irradiation doses between 60 and 20...
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The sandfly Phlebotomus perniciosus is the most widespread vector of Leishmania infantum in Spain. Laboratory colonisation represents the most feasible source of information on the biology of these insects, but in conducting any study, the density of individuals in the colony may drop to such an extent that it is sometimes difficult to recover the initial population levels. A new technique was ...
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Huss, rediscussing this material5 derived a parallax of -0'.063 = 0".050. It should be remarked that on most plates Wilsing measured, not the nucleus, but the whole nebula, which has a diameter of about 26". Professor Barnard has stated,6 that the central star of the nebula is variable "to an extent upwards of three magnitudes; at times it has appeared as a bright yellowish star of about the 12...
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Malaria remains one of the most significant global public health burdens, with nearly half of the world’s population at risk of infection. Malaria is not however a monolithic disease – it can be caused by multiple different parasite species of the Plasmodium genus, each of which can induce different symptoms and pathology, and which pose quite different challenges for control. Furthermore, mala...
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ژورنال
عنوان ژورنال: Annals of the Entomological Society of America
سال: 1913
ISSN: 1938-2901,0013-8746
DOI: 10.1093/aesa/6.1.125