Ischiomysis telmatactiphila Wittmann, 2013

Wittmann, Karl J. & Wirtz, Peter, 2024, An update on the genus Ischiomysis with a description of I. proincisa sp. nov. (Crustacea, Mysida) from a sublittoral marine cave in the Gulf of Guinea (tropical E-Atlantic), Zoosystematics and Evolution 100 (4), pp. 1431-1442 : 1431-1442

Ischiomysis telmatactiphila Wittmann, 2013

Fig. 1

Ischiomysis telmatactiphila Wittmann, 2013: 492–497, 503–505, figs 1–3; San Vicente and Monniot 2014: tab. 1; Wittmann et al. 2014: 349, figs 18, 20; Bhaduri and Crowther 2016: tab. 1; Wittmann and Wirtz 2017: 132, 148; Saito et al. 2018: tab. 2; Wittmann and Ariani 2019: suppl.; Mees and Meland 2024: AphiaID 723174.

Material.

São Tomé • 10 ♀♀ ad. (BL 4.2–5.4 mm), 6 ♂♂ ad. (BL 3.8–4.7 mm), 2 ♀♀ subad.; E-Atlantic, Gulf of Guinea, small islet Ilhéu de Santana ; 0.2417 ° N, 6.7587 ° E; 15 m depth; 4 Feb. 2017; P. Wirtz leg.; well-lit fissure in exposed rock in front of the “ Santana Tunnel ”, mysids above mouth disk of Telmatactis cricoides in crevice .

Note.

The present record at the Ilhéu de Santana is the first after the first description. It extends the known distribution by 31 km air route across São Tomé Island or by> 48 km waterway around São Tomé, respectively. Fig. 1 shows a dense swarm of this mysid species spread over the oral disc of T. cricoides . Additional mysid swarms were found closely associated with five other Telmatactis (above the oral disk and around the column of the anemone) in well-lit fissures of exposed rock in the Santana Bay at 0.2462 ° N, 6.7461 ° E. So far, no records of this species were made distant from anemones.

Figures

Figure 1. Ischiomysis telmatactiphila aggregated over the oral disk of Telmatactis cricoides in Santana Bay; photo P. Wirtz.