Well, It looks like fieldwork season is upon us and everyone but everyone is out and about in the never ending quest for beetles (especially new to science beetles!) but then, just as it's always cocktail hour somewhere in the world, so too it is always fieldwork season somewhere in the world (I love these excuses; as I write I'm thinking, hmm, it's 9am GMT, where in the world right now could I be sipping a gin martini?!).
Anyway, back to the point of things, recently one of our long-standing volunteers decided to take himself off to Africa, along with his long-obliging / suffering and lovely wife (wives, lovers, partners, husbands of entomologists you will understand what I mean!). This little trip was part of a collaboration to basically collect more beetles from more places in Tanzania than our usual intrepid entomologist Hitoshi - for Hitoshi's fieldwork exploits read here.
David Oram has worked in the Entomology Department for about seven years first starting out in the Lepidoptera section (Lepidoptera being his first love) and lately in the Coleoptera section where presently he is working on a recurating the Meloidae (the oil beetles). In real life David is a dentist. Really.
Fieldwork may appear glamorous, romantic, exotic and... a picnic! Below is David and his wife Dawn enjoying a well deserved break from beetle collecting in the Selous Reserve.
And now I hand you over to David's account of his fieldwork trip to Tanzania:
"Following on from some of the recent venturesome exploits of a certain member of the Coleoptera section at the NHM to Tanzania (namely HT) ; DAO and DO have just paid a visit to the Udzungwa Mountains in Tanzania during March 2012.
The Udzungwa Mountains cover an area of approximately 1990 Km² in the Iringa and Morogoro regions of south central Tanzania; part of the chain of a dozen large forest-swathed mountains, rising from the flat coastal scrub of eastern Tanzania, known collectively as the Eastern Arc Mountains. These stretch from the Taita Hills of southern Kenya to the Makambako gap southern Tanzania.
The mountains are about 7-8 hours drive southwest of the capital Dar Es Salaam and are bordered in the northeast by Mikumi National Park in the east by Selous Reserve beyond Kilombero Valley, in the north by the Great Ruaha river and Ruipa river in the southwest.
As our time was limited we travelled initially by small plane to Mikumi from the Selous Reserve, continuing the last shorter distance by road. This did not prove to be without incident as enroute a tree fell down over a vehicle just ahead of us nearly killing all the occupants. Somewhat shaken we arrived safely at the Hondo Hondo campsite in the afternoon.
This time of year being the start of the rainy season, to have dry weather was a bonus so when we arrived we set to with the mercury vapour (M.V.) light but first found we had to make some alterations. The choke needed replacing as did the light, but most of the equipment was in place and plenty of kind help was around from Jock the manager of the camp and his staff. The light and sheet was set up on a beautiful site overlooking the forest and mountains which just rise up in front of you.
Jock and staff fixing up the M.V. light
The early evening was warm and humid but dry with clear skies. On the forest edge we could watch the antics of some of the unique primate life of the Udzungwa red colobus and Black and white colobus and listen to the noises of the forest.
This was a magic spot until we could hear the sound of thunder; there was no rain to start with until after dark and the M.V. light had been on for half an hour or so. Then it rained like a continuous thunderstorm for at least five hours. A lot of rice is grown in this area and I now realised why. The field with the light and sheet was like a paddy field in at least 1-2 feet of water. The insect nets were like planks of wood and anything that could not swim was in trouble. We continued hoping for a change in the weather but gave up in the early hours of the morning. We must have been quite a sight inspecting the sheet and light every thirty minutes or so, into which things were still trying to fly into, in a small column of umbrellas.
The light survived this onslaught of appalling weather really due to the sound electrical connections by Jock and his men. We moved the M.V. lamp to a more sheltered spot for the next four nights. Needless to say it did not rain again at night.
Beetles and Moths arrived in even numbers most nights and included; the beautiful black and red flat faced longhorn Ceroplesis militaris; some large Prioninae Tithoes maculata; a ship timber beetle possibly Atractocerus brevicornis; plenty of chafers and dung beetles. The moths included many hawk moths; Hippotion celerio, Hippotion eson; the beautiful green hawk Euchloron megaera; Nephele comma; Nephele rovae and many species of Saturniidae.
Ceroplesis militaris, Cerambycidae
Atractocerus brevicornis, Lymexillidae - a rather unusual looking beetle; and what do you think it's mimicing?!
Tithoes maculatus, Cerambycidae - Will give you a nasty nip - just look at those mandibles!
For dung beetles we did set up some traps interestingly on the path used by the Elephants every morning at about 4am on the edge of the forest and our campsite. I was a little concerned about this but Emmanuel who was with me suggested these would be good sites and how right he was even the elephants seem to have been careful not to tread on them. One day was spent setting the traps up and finding local farmers to help; collecting some dung left by elephants contained dung beetles already who often were better diggers than us and avoided our attempts at capture. A number of these dung beetles have yet to be identified.
David and Emmanuel setting an elephant dung trap
Sap loving beetles
Another day at Hondo Hondo or rather the nearby village of Mang’ula was to prove interesting. Emmanuel who had helped with the dung beetle traps had a farmer friend at Mang’ula where he harvested bamboo sap for a drink. Bamboo is grown often around the edges of rice fields and suger cane here. The bamboo is used to make baskets and for transporting agricultural produce. We walked to Mang’ula as it was only a couple of miles away and the roads around Hondo Hondo are dirt roads with many undulations and corrugations so progress in a vehicle is slow. Once with the farmer's family I realised getting to the bamboo was not as easy as we had to cross some flooded fields of rice but supplied with wellingtons I was all kitted up. The sap is harvested by cutting through a stem of the bamboo then attaching a collecting bottle at an angle to allow the sap to just flow into it in a similar way to rubber sap. The chafer beetles congregate around the cut ends of the bamboo with lots of like minded insects including ants, bees, wasps, and butterflies. The end of our visit to the bamboo was rewarded with a shared drink of sap with the locals; fine as long as it's not too alcoholic…"
Neptunides polychrous, Cetonidae, Scarabaeoidea; on sap