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Tag Archives: kleptoparasitic wasps

Blood bees

29 Wednesday Apr 2026

Posted by sconzani in insects

≈ Comments Off on Blood bees

Tags

bees, Blood bee, British bees, cleptoparasite, kleptoparasite, kleptoparasitic wasps, kleptoparasitism, solitary bee, Sphecodes species

It’s just a week since I wrote on here that I find bees ‘tricky to photograph and even more difficult to identify and, though I don’t usually duck a challenge, bees are simply a step too far’. And then I saw a bundle of these red-and-black bees, and couldn’t help myself – they looked so lovely and distinctive that maybe, just maybe they were identifiable. So, I took some photos.

Of course, when I checked my photos later that day, it didn’t take long to discover that they’re NOT identifiable, at least not to species. I can tell you that they’re Blood bees, of the genus Sphecodes, but there are 17 species of Blood bee in the UK and they need to be examined microscopically to distinguish one from the other.

I did discover that these bees may look lovely but they have a dark side; Blood bees are kleptoparasites (or cleptoparasites). The entry on the Naturespot website explains that they are parasites of

ground-nesting solitary bees, including Halictus, Lasioglossum and Andrena. The female enters a host’s nest and breaks into the cell, killing the egg or grub. She lays one of her own eggs and reseals the cell. When the egg hatches, the grub consumes the food intended for the host species’ larva.

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Ruby-tailed wasp

01 Tuesday Jul 2025

Posted by sconzani in insects

≈ 2 Comments

Tags

British wasps, Chrysididae, kleptoparasitic wasps, kleptoparasitism, parasitic wasps, Ruby-tailed wasp, wasp

This gorgeous creature, clad in glimmering metallic colours of blue and green and red, is one of the Ruby-tailed wasps, the Chrysididae, and that’s as close to a definitive identification as I can come. According to an article I found on the BWARS (Bees, Wasps and Ants Recording Society) website, there are currently 38 species of Chrysid wasps in the British Isles and Channel Islands. Seven of those 38 species are shown on the Naturespot website, and they all look remarkably similar to my eye so I’m not even going to try to put an exact name to the one shown here. And, to be honest, I’m just incredibly pleased that this tiny wasp didn’t immediately fly away as I approached but, instead, allowed me to get reasonably good photos to share with you.

Now, just to be clear, though they look stunning, the Ruby-tailed wasps are almost all parasitic in nature. Some parasitise the eggs and larvae of other invertebrates, including other wasp species and bees; others are kleptoparasites, stealing the food other solitary wasps leave in their nests for their own larvae. Beauty and the beast encased in one tiny but beautiful bundle.

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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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