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Image 243 of Annual report. 1910

Part of Kentucky Agricultural Experiment Station

`1 - . » \ I ` _ 182 — Bulletin N0. 151. ' , ’ _` ` During the middle of the day animals sufered so much that they refrained from grazing at all, either standing close i together about the barn or else lurking singly in thickets or - standing in pools formed by small- streams.- One cow I dis- . A turbed frequently standing in the water or lying down among the thick herbage as if trying first one and then another expedient to get rid of the pests, yet always with her back, i between the thighs and shoulders, dotted with flies. I tried several times to get near her with my net to capture and remove some of them, but she was suspicious and always decamped with her whole collection. In the pastures away · from the stock, the flies were observed flying very swiftly I with a humming noise. Individuals sometimes came down to the water, and, still on the wing, dipped into it a couple , of times, then flew away. One was observed to alight on a - sedge in the edge of a stream, and deliberately walking . down to the water, thrust in its beak to drink, remaining for a minute, then coming up and flying away. Individuals I could be captured occasionally on leaves of oak and other trees over the water. · c - It was desired if possible ito learn where the flies placed their eggs, but not a single individual observed showed the slightest disposition to perform this function, and I was ‘ compelled to believe that the period for egg laying had not arrived. _ i The big black gadfly (Tccbcmus cltmtus) was occasionally seen, and one was finally found placing its eggs in a mass _ attached to a leaf of a small dogwood overhanging a stream. About 3 0’clock in the afternoon I came across a recently ` "deadened" willow tree on the banks of a stream, and on its trunk from the girdled bark at the base, extending well up among the branches, were numerous individuals of the brown gadfly, engaged with other insects in sucking a fer- mented sap that exuded from the bark. Several species of wasps and butterflies were noted among them, and also that inveterate lover of sweets of all sorts, the green June bug. In a few minutes it was possible to capture all the fliesl ft .

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