Insects at Hemsworth

After a train journey from the south of England, I stretched my legs by walking back to Hemsworth, from Fitzwilliam, using the scenic route.

Lucilia sericata

By the path, I found common green bottles feeding on hogweed and they were very striking when looked at closely. This species is one whose maggots can be used to clean wounds very effectively. They will eat dead tissue whilst leaving living tissue alone.

Graphomya maculata (female)

I identified another very striking fly that I saw as Graphomya maculata, also feeding on hogweed. It’s said to be found in damp areas and these were photographed on the edge of marshy ground.

Graphomya maculate (male)

Also on the hogweed, I found a true bug that I believe to be Grypocorus stysi. This species is said to feed on both flowers and small invertebrates such as aphids.

Grypocorus stysi



Alder Leaf Beetle at Fitzwilliam

I was walking around Fitzwilliam Country Park this afternoon when I spotted lots of metallic black/blue beetles on the leaves of an alder. I think the alder is Italian alder (Alnus cordata).

Alder Leaf Beetle on Italian Alder

I believe that the beetles are Alder Leaf Beetle. This species has been absent from the UK for about 60 years and it began to be recorded again in about 2004. It is likely that it was reintroduced to the British Isles by the plant trade.

Alder Leaf Beetle (Agelastica alni)

There were many beetles on this and other trees, singles and mating pairs. You can see holes in the leaf in the picture above. This species causes significant damage to alder and can reduce leaves to skeletons. It was recorded at RSPB Old Moor in 2012 and it has been recorded at Wintersett since 2013.

Spring Moth-Trapping

The weather has been a bit cool but I have put out the moth trap on a couple of nights this week. There was a threat of some overnight drizzle, so I used my usual arrangement of a tripod and umbrella to protect the mercury vapour bulb, which might shatter if exposed to rain.

Moth trap

The catch was much lower than I would expect on a summer night, only two moths on each occasion. The first night produced early grey and a male muslin moth. The second night gave another early grey and a powdered quaker.

Clockwise from left: Early Grey, Muslin Moth and Powdered Quaker

All of the three are common but it was the first time that I had caught powdered quaker in my garden. This brings the total number of macro-moths found in the garden to 89 but I think there is further to go because I regularly log new species.