Giftige of ziekteverspreidende geleedpotigen van Kongo. 3 : De paardenvlieg van de draadwormziekte : Chrysops silaceus (Austen) / Liebig's Extract of Meat Company.

Number three of six from the 'Harmful Insects of the Congo' series of trade cards issued by Liebig's Extract of Meat Company in 1956. The front has chromolithographs of a village scene with a man weaving a basket, and the deer fly species Chrysops silaceus. The reverse has an advertisment for Leibig and Oxo cubes, and information about the ecology of Chrysops silaceus.