Table 6.
IR Repertoire Sizes in Hymenoptera and Outgroup Species
| Clades | Boostrap Support % | Total | Ac | Ca | Pfu | Nv | Am | Bt | Hs | Dm | Bm | Comments |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| IR8a | 100 | 9 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | Classic antennal IRs |
| IR21a | 100 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | |
| IR25a | 100 | 17 | 2 | 2 | 4 | 2 | 1 | 2 | 2 | 1 | 1 | |
| IR31a | — | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | |
| IR40a | 100 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | |
| IR64a | 42 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | |
| IR68a | 100 | 9 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| IR75a/b/c | 100 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | |
| IR75d | 100 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | |
| IR76b | 100 | 9 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| IR84a | — | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | |
| IR93a | 100 | 10 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | |
| IR56e | 98 | 2 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | Fruit fly “divergent” IR |
| IR75f | 100 | 16 | 3 | 3 | 1 | 0 | 3 | 3 | 3 | 0 | 0 | Hymenoptera-only antennal IRs |
| IR75u | 100 | 10 | 1 | 1 | 2 | 2 | 1 | 1 | 2 | 0 | 0 | |
| IR218 | 100 | 7 | 1 | 1 | 2 | ? | 1 | 1 | 1 | 0 | 0 | |
| IR309 | 100 | 3 | 1 | 1 | 0 | ? | 0 | 0 | 1 | 0 | 0 | |
| IR310 | 100 | 3 | 1 | 1 | 0 | ? | 0 | 0 | 1 | 0 | 0 | |
| IR328 | 100 | 7 | 1 | 1 | 2 | ? | 1 | 1 | 1 | 0 | 0 | |
| IR329 | 100 | 6 | 1 | 1 | 1 | ? | 1 | 1 | 1 | 0 | 0 | |
| IR330 | 100 | 9 | 2 | 1 | 3 | ? | 1 | 1 | 1 | 0 | 0 | |
| IR331 | 100 | 9 | 1 | 2 | 3 | ? | 1 | 1 | 1 | 0 | 0 | |
| IR332 | 100 | 4 | 0 | 1 | 1 | ? | 1 | 1 | 0 | 0 | 0 | |
| IR333 | 100 | 3 | 1 | 1 | 0 | ? | 0 | 1 | 0 | 0 | 0 | |
| IR334 | 100 | 4 | 1 | 1 | 0 | ? | 1 | 1 | 0 | 0 | 0 | Hymenoptera “divergent” IRs |
| IR335 | 100 | 5 | 1 | 1 | 0 | ? | 1 | 1 | 1 | 0 | 0 | |
| IR336 | 100 | 7 | 2 | 1 | 0 | ? | 1 | 1 | 2 | 0 | 0 | |
| IR337 | 100 | 5 | 1 | 1 | 0 | ? | 1 | 1 | 1 | 0 | 0 | |
| IR338 | 100 | 4 | 1 | 2 | 0 | ? | 1 | 0 | 0 | 0 | 0 | |
| IR339 | 100 | 6 | 1 | 2 | 0 | ? | 1 | 1 | 1 | 0 | 0 | |
| IR-X | 100 | 3 | 1 | 1 | 1 | ? | 0 | 0 | 0 | 0 | 0 | Novel clade: unique to apoid wasps only |
| Others | 73 | 0 | 0 | 0 | ? | 0 | 0 | 0 | 56 | 17 | Sequences found only in outgroup species D. melanogaster and B. mori in our analysis. | |
| Total | 256 | 27 | 29 | 26 | 10 | 21 | 22 | 23 | 71 | 27 |
Note.—Ac, Ampulex compressa; Am, Apis mellifera; Bm, Bombyx mori; Bt, Bombus terrestris; Ca, Cerceris arenaria; Dm, Drosophila melanogaster; Hs, Harpegnathos saltator; Nv, Nasonia vitripennis; Pfu, Psenulus fuscipennis. Clade bootstrap values are those given in the phylogenetic tree shown in figure 4. Clades highlighted in gray are not found in Hymenoptera, except Nasonia which has IR21a and 64a. The “?” represent unnamed IRs described by Robertson et al. (2018). Clade names typed in red are classic antennal IRs, those typed in blue are only found in Hymenoptera, those typed in green are here referred to as “divergent IRs.” IR-X is restricted to apoid wasps. “Others” represent IRs found only in outgroup species.