These species were the choanoflagellate Monosiga brevicollis, the placozoan Trichoplax adhaerens, the cnidarian Nematostella vectensis, six insects (two dipterans, Drosophila melanogaster and Anopheles gambiae, two hymenopterans, Apis mellifera and Nasonia vitripennis, the beetle Tribolium castaneum and the hemipteran Acyrthosiphon pisum), two nematodes such as Caenorhabditis elegans and Brugia ma