نتایج جستجو برای: syrphids
تعداد نتایج: 47 فیلتر نتایج به سال:
The syrphids (Syrphidae) of Serra do Courel, a mountainous locality of just over 20,000ha at the west end of the Cantabrian Mountains, northern Spain are poorly known. The Scottish based, Malloch Society visited the locality in May 2012 and collected a total of 462 specimens of 98 syrphid species and 36 genera. These represent the first syrphid records from Serra do Courel. The area has many me...
Pseudoregma baenzigeri, sp. nov., is described from northern Thailand. This species forms dense, huge colonies on shoots of the bamboo Dendrocalamus sp., and produces many first-instar, pseudoscorpion-like soldiers. Alate sexuparae were found from the end of September to mid October. Two syrphids, Eupeodes sp. A (allied to E. confrater) and Dideoides chrysotoxoides, and the pyralid Dipha aphidi...
one of the most important predator-prey interactions is functional response which its type and parameters are affected by different factors including host plant characteristics. in this research, the influence of leaf surface on functional response and prey consumption rate of third instar larvae of the episyrphus balteatus (de geer, 1776) (diptera: syrphidae) to third instar nymphs of aphis go...
Abstract The aim of the research was to study diversity hoverflies (Syrphidae: Diptera) living in areas under influence heavy metal emissions (Cd, Zn and Pb). Although area Olkusz Ore-bearing Region (OOR), where partially conducted, belongs contaminated regions, a relatively high species richness Syrphids has been noted. During period, total 1,180 syrphids, belonging 165 were caught, which cons...
Syrphids provide valuable ecosystem services such as pollination, pest control or organic matter decomposition. In many cases, adults exploit pollen resources from the landscape to complete their life cycles. Yet, knowledge about most suitable plants for enhancing syrphid populations is still insufficient habitats. Also distribution across understudied. this work we analyzed: (i) syrphids diffe...
The influence of different semi-natural surroundings adjacent to apple orchards on the occurrence predatory syrphids and biological control Aphis pomi Deg. Dysaphis plantaginea Pass. was compared. Two methods catching hoverflies were used: yellow traps collect adults hand picking get larvae from aphid colonies. A total 1029 Syrphidae (26 species belonging 14 genera) subfamily Syrphinae collecte...
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