Gibberosus devaneyi Thomas & J.L. Barnard, 1986

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

Gibberosus devaneyi Thomas & J.L. Barnard, 1986

Figs 21 , 30A

Gibberosus devaneyi Thomas & J.L. Barnard, 1986b: 469-475, figs 11, 13-15.

Material examined.

Panama • 2-3 mm • 6 ♂, 56 ♀; Bocas del Toro, Cayo Solarte ;; 9.3336°N, 82.218883°W; depth 0.1-1 m, in sand; 7 Aug 2005; S.E. LeCroy leg.; GCRL 6653 • 1 ♂; Bocas del Toro, Drago; 9.413433°N, 82.33335°W; depth 1-3 m, among Halimeda , red algae and coral rubble; 23 June 2023; K.N. White leg.; USNM 1703546 • 1 ♂, 5 ♀; Bocas del Toro, Crawl Cay; 9.250217°N, 82.131767°W; depth 5-13 m, coral rubble; 29 June 2023; K.N. White leg.; USNM 1703547 .

Diagnosis.

Head ocular lobe with subacute cusp. Pleosome segment 3 and urosome segment 2 with dorsal serrations, other segments smooth, lacking dorsal spines. Epimeron 3 smooth. Uropod 3 rami continually lined with spines. Telson lobes with several dorsal and two apical spines.

Distribution.

U.S.A.: La Jolla, California; Peru: Chincha Island ( Thomas and Barnard 1986b); Panama: Bocas del Toro (present study).

Ecology and remarks.

These amphipods are found in sand at depths of 0-18 m. Panamanian specimens closely resemble specimens described from the eastern Pacific with slight variation in the following characters: subacute anterior head margin (acute in Pacific material) and slightly more serrate posterodorsal margin on pleon segment 3. All other characters match well, specifically the smooth posterior margin of epimeron 3 and the continually spinose margins of uropod 3 rami.

Figures

Figure 21. Gibberosus devaneyi, female, 3.7 mm, pereopod 7, telson, epimeron and urosome, head, uropod 1; male, 3.0 mm, gnathopod 2, setae removed, uropod 3. Scale bars: 0.5 mm.

Figure 30. Photographs of live specimens unless noted A Gibberosus devaneyi B Gibberosus myersi C Resupinus spinicaudatus (ethanol preserved specimen) D Eusiroides yucatanensis E Nasageneia bacescui F Tethygeneia longleyi. Scale bars: 1.0 mm.