Animalia Amphipoda Lysianassidae WhiteKristine N.Caribbean Amphipoda (Crustacea) of Panama. Part III: parvorder LysianassidiraZookeys24102024121614917110.3897/zookeys.1216.135258 E3729DE2-9957-53F4-9ECF-A033CD5DAF0F Shoemakerella lowryi Gable & Lazo-Wasem, 1990Figs 7, 11B Lysianassa punctata Kunkel, 1910: 8–10, fig. 1; Johnson 1986: 377, fig. 124. Shoemakerella lowryi Gable & Lazo-Wasem, 1990: 727–733, figs 5–7.Material examined.

Panama • 2–5.5 mm • 1 ♂; Bocas del Toro, San Cristobal; 9.2625°N, 82.2350°W; depth 15 m, among coral rubble; 10 August 2021; K.N. White leg.; USNM 1739782 • 1 ♀; Bocas del Toro, Swan Cay; 9.4536°N, 82.300033°W; depth 2 m, among sponges; 24 Jun 2023; K.N. White leg.; USNM 1739783 • 2 ♀; Bocas del Toro, Crawl Cay; 9.245967°N, 82.136867°W; depth 1–4 m, among coral rubble; 25 June 2023; K.N. White leg.; USNM 1739784 • 4 ♀; Bocas del Toro, Cayo Zapatilla 1; 9.2700°N, 82.0587°W; depth 10–11 m, among coral rubble; 28 June 2023; K.N. White leg.; USNM 1739785.

Diagnosis.

Head and body with tiny setules. Epistome weakly concave. Pereopod 6 basis posterior margin slightly concave. Pereopod 7 propodus length ~9 × width. Telson apex truncate.

10.3897/zookeys.1216.135258.figure79E8FD53B-17C1-50F3-80E3-6DCF7C83B345

Shoemakerellalowryi, male, 4.5 mm, pereopod 7, pereopod 6, head, epistome and upper lip, pereopod 3, maxilla 2, telson, gnathopod 1 lateral. Scale bars: 0.5 mm.

https://binary.pensoft.net/fig/1160283Distribution.

Bermuda (Gable and Lazo-Wasem 1990); Panama: Bocas del Toro (present study).

Ecology and remarks.

These amphipods are associated with algae, seagrass, and coral rubble at depths of 0.5–9 m. Panamanian specimens closely resemble previously described specimens and can be readily distinguished from Shoemakerellacubensis based on the pereopod 6 basis posterior margin, pereopod 7 propodus length relative to the carpus length, and the telson apex. Panamanian specimens are transparent white in color with brown spots when alive.

10.3897/zookeys.1216.135258.figure11A5220653-23AF-5681-9140-C43AF47F66BE

Photographs of live specimens unless noted AShoemakerellacubensis (ethanol preserved specimen) BShoemakerellalowryiCLepidepecreummagdalenensis (ethanol preserved specimen) DOrchomenellathomasi (ethanol preserved specimen). Scale bars: 1.0 mm.

https://binary.pensoft.net/fig/1160287JohnsonSE (1986) Order Amphipoda. In: SterrerW (Ed.) Marine Fauna and Flora of Bermuda.John Wiley & Sons, New York, 372–381.GableMFLazo-WasemEA (1990) Lysianassidae (Amphipoda: Lysianassoidea) of Bermuda.Journal of Crustacean Biology10(4): 721–734. https://doi.org/10.2307/1548416