Input MCL group: MCL15114:
| Species | No. | Gene(s) |
| Homo sapiens | 1 | ENSP00000258400 |
| Mus musculus | 1 | ENSMUSP00000027431 |
| Pediculus h. humanus | 1 | PHUM220540-PA |
| Pogonomyrmex barbatus | 1 | Pbar_5HT2-1 |
| Linepithema humile | 1 | LH20553-RA |
| Apis mellifera | 1 | GB18151-PA |
| Nasonia vitripennis | 0 | |
| Tribolium castaneum | 2 | TC013979 TC013980-GA |
| Bombyx mori | 0 | |
| Danaus plexippus | 1 | DPGLEAN15859-PA |
| Anopheles gambiae | 1 | AGAP002232-PA |
| Aedes aegypti | 1 | AAEL017162-PA |
| Drosophila pseudobscura | 1 | PSEGA10393-PA |
| Drosophila melanogaster | 1 | 5-HT2-PB |