Volunteering at the OUMNH

 A word from one of our volunteers:

“Hi! My name is Helen, and I am a student at Derby University. I am starting an MRes (Master of Research) degree in Forensic Science in the new academic year, and I am working towards a future career in Forensic Entomology.

In July this year, I undertook two weeks of volunteering in the entomology department of the OUMNH. I was really excited to see another side of entomology, and to be able to get some more practical experience in the field. I have been interested in museum work for some time, so I was pleased to find that I really enjoyed the owrk that the team do.

When I arrived, I was given a tour of hte department and then given a drawer full of mixed specimens to sort to order level.

entomology, orders, insects, soritng, volunteering, OUMNH
Drawer of insect orders to be sorted (there are some trick specimens in here)

It was really good practice for being able to trecognise the different orders, and I enjoyed looking at all the different specimens.

Later, I got some extra practice at recognising orders when I sorted some specimens collected in Bolivia.

In my first week, I attended an IPM (Intergrated Pest Management) conference, which helped me learn about the problems with pests in museums, and the methods which are avaliable to help prevent important collections from ebing eaten by hungry critters.

I also got to develop my skills in identifying insects using keys, and I had a go at point mounting some specimens – a technique used to moutn very small insects for identification and display purposes.

insect, entomology, pointing, mounting, volunteering, practice
My first attempt at pointing insects

In my second week of volunteering, I was able to practice the new skills I had learned in my first week as well as gaining some nrw ones. I had a go at direct pinning some specimens and added some new labels to part of the collection which had belonged to W.J. Burchell. I also uised the auto-montage to create some amazingly detailed photographs.

auto-montage, photography, diptera, entomology, volunteering, OUMNH, composite
An auto-montage photograph of Calliphora vicinia.

I would really recommend volunteering to anyone with an interest in entomology – it’s such a wonderful experience to be able to see what goes on beind the secenes in a museum, as well as having the chance to see such a huge variety of insects in the collections I would love to go back and do some more volunteering at the museum in the future.”

The department would like to thank Helen for all her hard work and the for the contributions she made during her two weeks with us.

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There’s a fly on my nose!

By Mike Ackland
Honorary Associate of the HEC

In September 2011, John Carr of Massachusetts, USA, posted photographs of an anthomyiid fly on the website diptera.info. This site has thousands of photos of flies, sent in by both diptera enthusiasts who are keen photographers, and experts who offer advice and possible identification.

I recognised the anthomyiid as a species of Eutrichota, which has over 50 species in the Nearctic Region. Positive identification to species however generally requires examination of a specimen under a microscope. John, who is a very good photographer and naturalist, later added to his posting some very clear close-ups of various parts of a male specimen he had caught, and offered to send the specimen to me. This proved to be Eutrichota affinis (Stein), a species widespread in America and which is associated with the groundhog Marmota monax L. and may be found in and around their burrows. The larvae are considered to be facultative commensals probably feeding in excrement and debris in the burrows.

A few other species of Eutrichota in North America have been associated with mammals including ground squirrels, Spermophilus tridecemlineatus (Mitchell), chipmunks, Tamias striatus (L.) and various species of gophers (Geomys spp.).

In Europe other species of Eutrichota have been found around the burrows of the Alpine Marmot Marmota marmota L. There are seven species of Eutrichota in Britain, though no life histories are known. See Pont & Ackland, 1995 for more details of the flies found in the Alps (full reference below). I first met Adrian Pont (another Hope Department Honorary Associate) in the mid 1950’s in Leigh Woods near Bristol, where we were both collecting insects. So we have both been studying flies for over 50 years.

Recently John Carr sent me two photographs of specimens of Eutrichota affinis on the head and nose of a groundhog. These were taken in Connecticut on 30th May 2009. The groundhog family was living in a culvert, and John reports that they later ate part of his sister’s garden!
My thanks to John for permission to use these excellent photos.

Diptera, Anthomyiidae, fly, Eutrichota, Eutrichota affinis, Marmot, Marmota monax
There’s a fly on my nose!
Diptera, Anthomyiidae, fly, Eutrichota, Eutrichota affinis, Marmot, Marmota monax
Females of Eutrichota affinis (Stein)(Diptera: Anthomyiidae) on the head of the groundhog Marmota monax L.

Reference
Pont, A.C. & Ackland, D.M. (1995). Fanniidae, Muscidae and Anthomyiidae associated with Burrows of the Alpine Marmot Marmota marmota Linnaeus in the upper Ötz Valley (Tyrol, Austria). Insecta, Diptera. Berichte des naturwissenschaftlich-medizinischen Vereins in Innsbruck, 82: 319-324.

A pdf version of the paper is avaliable HERE.