| Dock Leaf Bug (Coreus marginatus (Linnaeus, 1758)) |
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Scientific name: Coreus marginatus (Linnaeus, 1758) Common name: Dock Leaf Bug Other names: Brown Squash Bug French name: Punaise brune Order: Heteroptera Family: Coreidae Wingspan : 10-16 mm Biotope: Gardens, hedgerows, open woodlands, woodland edges and water meadows. Adult bugs and larvae mainly live and feed on Sorrell, Dock and Rhubarb. Geographic area: Europe and North America. Observation period : All year long. The Dock Leaf Bug can over winter in any insect life stage. |
The Dock Leaf Bug's body looks like a shield. There are no stripes on the edges and the shoulders are rounded. The antennae are made of 4 elements. You can identify the Dock Leaf Bug with its dark tipped antennae compared to Arma custos which bears light tipped antennae. There are two small pointers in the front of the head of the Dock Leaf Bug, between the two antennae. |
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I took this picture of a raspberry leaf. |
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The antennae is dark tipped, I think this is a Brown Squash Bug. |
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You can clearly see the two small pointers between the antennae on this picture. |
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Mating. |
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Mating seems to be one favourite pastime of Dock Leaf Bugs! |
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Nymph. |
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I don't know how this nymph got into the kitchen sink in the middle of washing up. Was it transported with a salad or some other vegetable? It had to undergo the usual photo shoot before being carried outside to the garden. The length of the antennae is really impressive. |
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I use the extension tubes and the flash for these tiny insects. A salad bowl in the sink provided a nice white background. |
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The most difficult for these very close photos is undoubtedly the focus. I switch to manual mode by setting the minimum distance allowed by the extension tubes and I approach slowly to trigger as soon as the desired area appears sharp in the viewfinder. It works well with a stationary subject, but this very mobile nymph gave me a hard time. I am however satisfied with the result. |
André Bon January 2023