Delderfield [April 2023]


 Delderfield
6th April 2023

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On my walk ... the marmalade hoverfly

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  Distinguishing between some species of hoverfly can be a real challenge, some species can only be told apart by examination under a microscope but that means capturing and killing a specimen and I am not about to do that. Mine is a hobby project not a scientific study. Some species, however, are distinctive enough to be identified even from a distance and this one [ Episyrphus balteatus]  being only 10mm or so in length is one of those more easily identified specimens. It is a slender insect with a quite distinctive shaped abdomen and has a unique pattern of markings on its back. Usually orange and with three alternate pairs of thick and narrow black bars it has earned the nickname of the marmalade hoverfly but you probably will not find it referred to as that in reference books. This particular insect caught my eye as it has three grey bands and I wondered if it was something other than 'balteatus' but upon reference to my 'bible' on hoverflies I find the markings ca...
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On my walk ... the rock samphire

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