Shoemakerella lowryi Gable & Lazo-Wasem, 1990

White, Kristine N., 2024, Caribbean Amphipoda (Crustacea) of Panama. Part III: parvorder Lysianassidira, ZooKeys 1216, pp. 149-171 : 149-171

Shoemakerella lowryi Gable & Lazo-Wasem, 1990

Figs 7 , 11 B

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.

Distribution.

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 Shoemakerella cubensis 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.

Figures

Figure 7. Shoemakerella lowryi, 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.

Figure 11. Photographs of live specimens unless noted A Shoemakerella cubensis (ethanol preserved specimen) B Shoemakerella lowryi C Lepidepecreum magdalenensis (ethanol preserved specimen) D Orchomenella thomasi (ethanol preserved specimen). Scale bars: 1.0 mm.