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Tag Archives: Cyphostethus tristriatus

Three shieldbug nymphs

13 Wednesday Aug 2025

Posted by sconzani in insects

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Tags

Acanthosoma haemorrhoidale, British shieldbugs, Bronze shieldbug, Bronze shieldbug nymph, Cyphostethus tristriatus, Hawthorn shieldbug, Juniper shieldbug, shieldbug, shieldbug nymphs, Troilus luridus

I’ve found some nice nymphs of our various shieldbug species during recent walks so thought I’d share a few of them. The nymphs almost always look quite different to the adults of the same species; if you’re unsure which shieldbug or which stage (instar) of nymph you’ve found, the British Bugs website has a page full of excellent drawings showing the various instars of all the British shieldbug species.

As this was only my fourth ever sighting of this species, I was particularly pleased to spot this Bronze shieldbug nymph (Troilus luridus), though it would have been difficult to miss as its metallic colours sparkled in the sunshine.

To illustrate how much these bugs change as they grow, I’ve included two photos of Hawthorn shieldbug (Acanthosoma haemorrhoidale), the top image shows early instar nymphs and below that is a mid instar nymph.

It was just a couple of months ago that I saw my first Juniper shieldbug (Cyphostethus tristriatus) and I wrote then (Juniper shieldbug, 3 June) that I was intending to return to the site to look for more, adults and nymphs. I did, and I have; this is one of two nymphs I found recently, a bug that’s just a stunning as the adult, in my humble opinion.

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Juniper shieldbug

03 Tuesday Jun 2025

Posted by sconzani in insects, trees

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Tags

British shieldbugs, Cyphostethus tristriatus, Juniper shieldbug, shieldbug on Juniper, shieldbug on Lawson's cypress

This is a bug I never thought I’d see locally as I don’t know any locations where Juniper trees grow. Fortunately for me, and as stated on the British Bugs website, the Juniper shieldbug (Cyphostethus tristriatus) has started living on Lawson’s cypress (Chamaecyparis lawsoniana) as well as its traditional host tree, the Juniper (Juniperus communis) for which it is named. And Lawson’s cypress is a popular planting in gardens and parks, which is where this tree was growing, alongside a path that runs around a local recreation ground.

British Bugs explains that adult Juniper shieldbugs, with the beautiful reddish-pink markings on their backs, can be seen all year round, though they tend not to be too active during the coldest winter months, like most of us. The nymphs that hatch from mid to late Spring feed on Juniper and Cypress berries and, like all shieldbugs, they go through a series of instars before reaching adulthood. The website has excellent, illustrated downloadable charts of the various stages of most shieldbug species for easy identification if you happen to spot a nymph and, now that I know where this Juniper shieldbug lives, I’ll have to go back and look for more, adults and nymphs.

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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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