Quadrimaera yemanjae Alves, Neves & Johnson, 2018

White, Kristine N. & Sir, Sally J., 2024, Caribbean Amphipoda (Crustacea) of Panama. Part II: parvorder Hadziidira, ZooKeys 1195, pp. 249-296 : 249

Quadrimaera yemanjae Alves, Neves & Johnson, 2018

Figs 16 , 29B

Quadrimaera yemanjae Alves, Neves & Johnson, 2018: 569-575, figs 2-7.

Material examined.

Panama • 2-4.5 mm • 10 ♂, 4 ♀; Bocas del Toro, Swan Cay ; 9.453333°N, 82.298333°W; depth 2-3 m, among coral rubble; 4 Aug 2005; S. DeGrave leg.; GCRL 6647 • 1 ♀, 9 juvenile; Bocas del Toro, TAH 001, Aug 2005; T.A. Haney leg.; GCRL 6648 • 1 ♂, Bocas del Toro, Drago; 9.418056°N, 82.3375°W; depth 2-4 m, among coral rubble; 9 Aug 2021; K.N. White leg.; USNM 1703530 • 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 1703531 .

Diagnosis.

Antenna 1 accessory flagellum 6-articulate, distal article minute. Gnathopod 1 coxa anteroventrally rounded; carpus with deep dorsal depression and two short and three long facial setal rows. Gnathopod 2 propodus palmar margin with two small U-shaped excavations separated by a subacute process, followed distally by a large truncate process and one large U-shaped excavation, palm defined by large projection; dactylus medially smooth, slightly expanded. Telson lobes apically truncate, inner margins acute, each with four long apical spines.

Distribution.

Brazil: Rio Grande do Norte State ( Alves et al. 2018); Panama: Bocas del Toro (present study).

Ecology and remarks.

These amphipods are associated with Halimeda and coral rubble at depths of 0-4 m. Panamanian specimens closely resemble specimens described from Brazil (4.5 mm), with slightly less acute projections on the palm of gnathopod 2 propodus. This can most likely be attributed to the smaller size of the Panamanian specimens (3.8 mm).

Figures

Figure 16. Quadrimaera yemanjae, male, 3.8 mm, gnathopod 1 propodus, carpus, dactylus medial, gnathopod 2 lateral, coxa 1, maxilla 2, telson. Scale bars: 0.5 mm.

Figure 29. Photographs of live specimens unless noted A Quadrimaera sarae B Quadrimaera yemanjae C Dulichiella anisochir (ethanol preserved specimen) D Dulichiella lecroyae E Melita planaterga F Hornellia tequestae. Scale bars: 1.0 mm.