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~ a celebration of nature

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Tag Archives: cleg

A horsefly’s eyes

14 Friday Jun 2024

Posted by sconzani in insects

≈ 2 Comments

Tags

British horseflies, cleg, Haematopota pluvialis, horseflies' eyes, horsefly, Tabanidae

This was my first horsefly of the year, never a welcome sight as I react quite badly to their bites.

240614 Haematopota pluvialis (1)

She had just settled on my forearm (they have such a light touch that you often don’t notice they’re there until it’s too late), and was focused on her next task of slicing open my skin so that she could feed on my blood. But, before I fell victim to her bloodsucking, I made a quick grab for her and, amazingly, managed to get hold of one wing. That allowed me to get some reasonable close-up photos of her vicious mouth parts and those incredible eyes!

240614 Haematopota pluvialis (2)

The BBC Wildlife website reports that horseflies’ eyes ‘are packed with hundreds (or thousands) of individual light-sensitive columns known as ommatidia (only the near-circular lens facets on the outside are visible)’ and also that the ‘hues are created not by pigments but by the light-refracting qualities of neighbouring groups of facets, determined by the densities of the lens cuticles.’ These particularly stunning eyes may belong to a female Haematopota pluvialis (only the females bite) but I haven’t yet had that identity confirmed.

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Horseflies love me

22 Monday Aug 2016

Posted by sconzani in insects, nature

≈ 13 Comments

Tags

cleg, Haematopota species, horsefly, Tabanidae

And I really wish they didn’t!

160822 Horsefly Haematopota sp (2)

It’s the female Horseflies that are the problem – they’re the biters, of humans, horses and other animals, to get the blood they need to aid egg production and, for some reason, they can smell my blood coming a mile away. I got several bites on my face during a recent fungi foray and had a nasty allergic reaction, was swollen and looked like I had some kind of infectious disease. Antihistamine meds don’t really agree with me, so I retreated from the world for a week till the worst of the swelling had gone down. (I got the bite in my photo four days ago. Luckily, Ms Horsefly was only on me for a second or two, before I noticed and flicked her off.)

160822 Horsefly Haematopota sp (3)
160822 Horsefly Haematopota sp (1)
160822 Horsefly bite

The trouble for me is that Horseflies (a large and diverse group called the Tabanidae family, and also known by the common name of Cleg) are rather lovely creatures and they have the most incredible eyes, so I’m driven to capture photos of them (perhaps I’m a masochist!). The Horsefly in my photos is one of the Haematopota species. They have compound eyes that appear brightly coloured and have incredible patterns – from other photos I’ve seen, each creature seems to have a different pattern, much like fingerprints or retina patterns. So, I will continue to seek them out, just as they continue to seek me out!

160822 Horsefly Haematopota sp (4)

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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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