Table 1. Material, sampling coordinates and accession numbers of investigated specimens and published sequences which were used for distance calculations (Table 2) and the reconstruction of the COI Neighbor Joining tree (Fig. 4).
| Host species | Sample | Individual ID | Sampling location | Coordinates | Depth (m) | Acc COI | Acc 16S SOX | Acc 16S MOX | Ref. |
| B. puteoserpentis | MSM04/3 244 Rov 9 | 30, 32, 34–38, 41–44, 46,48, 49, 53–59 | Logatchev, Irina II | 14°45.180′ N, 44°58.746′ W | 3022 | JQ844834 - JQ844854 | - | - | This study |
| Bathymodiolus sp. 5°S | M78/2 274 ROV 3 | 1, 2, 4–11 | Golden Valley | 4°48.162′ S, 12°21.680′ W | 2987 | JQ844798 - JQ844807 | - | - | This study |
| Bathymodiolus sp. 5°S | M78/2 302 ROV 15 | 1, 2, 3–8, 10, 11 | Clueless | 4°48.250′ S, 12°22.259′ W | 2995 | JQ844808 - JQ844817 | JQ844767 - JQ844771 | - | This study |
| Bathymodiolus sp. 5°S | ATA 37 Rov 7 | 9–11, 13–19 | Wideawake | 04°48.626′ S, 12°22.342′ W | 2998 | JQ844788 - JQ844797 | - | - | This study |
| Bathymodiolus sp. 5°S | M64/1 109 GTV-A | 7 | Wideawake | 4°29.184′ S, 12°13.416′ W | 2998 | - | JQ844772 - JQ844774 | - | This study |
| Bathymodiolus sp. 5°S | M64/1 125 Rov 7 | 4 | Wideawake | 4°48.62′ S,12°22.35′ W | 2987 | - | - | JQ844775 | This study |
| Bathymodiolus sp. 9°S | M78/2 319 ROV 10 | 1–6, 7, 8, 9, 10, 11, 26,31, 32, 36 | Lilliput | 9°32.837′ S, 13°12.549′ W | 1495 | JQ844818–JQ844832 | JQ844777JQ844778JQ844780JQ844781 | JQ844776 JQ844779 | This study |
| Bathymodiolus sp. 9°S | M64/1 200 ROV 9 | 4 | Lilliput | 9°19.716′ S, 13°07.536′ W | 1495 | JQ844833 | JQ844783 -JQ844785 | JQ844782 | This study |
| B. azoricus | n.d. | n.d. | Rainbow | 36°13′ N–33°54′ W | 2500 | FJ766849–FJ766857,FJ766870 | - | - | [40] |
| B. heckerae | n.d. | n.d. | West Florida Escarpment | 26°01.8′ N,84°54.9′ W | 3314 | AY649794 | - | - | [73] |
| B. boomerang | n.d. | n.d. | Barbados (Orenoque Dome B) | 10°19.9′ N,58°37.3′ W | 1950 | DQ513448 | - | - | [15] |
| B. aff. boomerang | n.d. | n.d. | Gulf of Congo | 5°47.8′S, 9°42.7′ E | 3170 | DQ513450 | - | - | [15] |
| A. southwardae 5°S | ATA 52 ROV 11 | 1, 2 | Clueless | 4°28.8′ S,12°22.2′ W | 2995 | JQ844786, JQ844787 | JQ844761 - JQ844766 | - | This study |
| A. southwardae Logatchev | n.d. | n.d. | Logatchev | 14°45.189′ N,44°58.829′ W;14°45.32′ N,44–58.79′ W | 3028–3038 | AF114401–AF114403 | EU403435 | - | [33], [60] |
| A. southwardae GoM | n.d. | n.d. | West Florida Escarpment | 26°01.8′ N,84°54.6′ W | 3313 | AF008280 | - | - | [44] |
| A. southwardae Barbados | n.d. | n.d. | BarbadosAccretionaryPrism | 13°50′ N, 57°45′ W | 5000 | AF008279 | - | - | [44] |
Individuals used for clone libraries of the bacterial 16S rRNA gene in bold; SOX = sulfur oxidizers; MOX = methane oxidizers, n.d. = no data.