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Tag Archives: Xylota segnis

X is for Xylota & Xanthogramma

29 Wednesday Dec 2021

Posted by sconzani in insects

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British hoverflies, hoverfly, Xanthogramma pedissequum, Xylota segnis, Xylota sylvarum

If it weren’t for hoverflies, this letter might well have proven rather tricky. Fortunately, there are three genera of hoverfly in Britain with names beginning with X: Xanthandrus, Xanthogramma and Xylota. I have seen none of the first but I have seen one of the Xanthogramma species, X. pedissequum (there are two others that have so far eluded me, X. stackelbergi and X. citrofasciatum).

211229 Xanthogramma pedissequum

There are seven British species of Xylota, of which I have so far encountered only two, X. segnis (below left) and X. sylvarum (below right). I’m still finding hoverflies a rather tricky family to identify but these particular finds have been confirmed through a series of photos by those much more expert than I will ever be.

211229 Xylota segnis
211229 xylota sylvarum

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A little hoverating

13 Thursday Jul 2017

Posted by sconzani in insects, nature

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Tags

British hoverflies, hoverflies, hoverfly, Leucozona glaucia, Leucozona laternaria, Merodon equestris, Xylota segnis, Xylota sylvarum

I admit to not taking as many photos of hoverflies this year as last. This is partly due to an overwhelming fascination with everything, meaning I tend not to focus on one family for long (I’m sure this will pass once I’ve lived in Britain a few more years and have seen a lot of the more common species of everything), but also because the area where I now live has less hoverfly-friendly habitats. Still, I do photograph them when I see them, especially any newbies. Here are a few …

170713 Leucozona glaucia
170713 Leucozona laternaria

Leucozona glaucia and Leucozona laternaria
These are not hoverflies I see very often but they are quite distinctive and that makes them easy to identify, not something you can say about many invertebrates. They’re woodland species but can often be found grazing on the hogweed flowers that frequently grow along woodland rides and edges. The two species are almost identical, except for the colour of their front legs (not always easily seen) and their scutellum (much easier – that’s the half moon shaped bit on their backs between their wings). The scutellum is yellow in Leucozona glaucia (above left) and dark in L. laternaria (above right).

170713 Merodon equestris

Merodon equestris
This medium-sized hoverfly looks a lot like a bumblebee, but the shape of its head and its large eyes are easy ways to tell that it’s not. In their top-notch field guide Britain’s Hoverflies, Stuart Ball and Roger Morris note that Merodon equestris is ‘believed to have been introduced into Britain in daffodil bulbs imported from Europe around the end of the 19th century’. That’s because the larvae of this hoverfly develop inside bulbs and have a particular liking for daffodils.

170713 Xylota segnis
170713 Xylota sylvarum

Xylota segnis and Xylota sylvarum
These are just two of the seven members of the Xylota genus – I have yet to see the others. With their lanky legs, they look a bit like sawflies and they also prefer gathering pollen and honeydew from leaves rather than flowers, so they’re not your run-of-the-mill hoverflies. I find these quite difficult to tell apart but X. segnis has a black bottom (above left) whereas X. sylvarum’s is yellow (above right) (not easy to see when they’re resting and covering their bottoms with their wings, as in my photo).

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About me

sconzani

sconzani

I'm a writer and photographer; researcher and blogger; birder and nature lover; countryside rambler and city strider; volunteer and biodiversity recorder.

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