More about oak galls

Yesterday’s post about oak apples prompted questions. Here is more information about some of the oak gall wasps that induce oak trees into producing such strange growths.

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Whirligig beetles

National Insect Week – Day 5

Whirligig beetles are actually a whole family (Gyrinidae) of water beetles: almost 700 different species globally, most of them very much alike and extremely difficult to tell apart. We have no idea what particular species live in the pond above the wooden bridge but all the Gyridinae share some fascinating features.

Read on for details and a short video

Who lives here?

A message and pictures from Julie, regular park-user:

Saw these little mini molehill type structures on the path next to the pond. Under the ones already disturbed there is a little hole. It’s possibly ants or something but thought I’d send them in anyway. Do you know what made them?

Read on to solve the mystery

Another new species

On Sunday, Julie Newblé sent us pictures of caterpillars in a tent-web she found strung between blackthorn twigs in the hedge at the top of the Arboretum.

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Froghopper

Red-and-black froghopper

This is a red-and-black froghopper (Cercopis vulnerata) photographed in the park yesterday by Ian Bushell. There are ten different species of froghopper in the UK and while the red-and-black froghopper is not the most common, it is widespread.

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