Bonassa bonairensis

Bonassa bonairensis (Stephensen, 1933) Figs 2, 10 B Lysianassa (?) bonairensis Stephensen, 1933 a: 416–420, figs 1, 2; Stephensen 1948: 1, 3. Lysianassa bonairensis J. L. Barnard, 1958: 94; Ortiz 1979: 19. Bonassa bonairensis Barnard & Karaman, 1991: 472; Lowry and Stoddart 1997: 54–58, figs 21–23. Material examined. Panama • 2–3 mm • 1 ♀; Bocas del Toro, Swan Cay; 9.4533°N, 82.2983°W; depth 2–3 m, among algae; 4 Aug 2005; S. DeGrave leg.; GCRL 6655 • 1 ♀; Bocas del Toro, Drago; 9.418056°N, 82.3375°W; depth 2–3 m, among coral rubble, 9 Aug 2021; K. N. White leg.; USNM 1739773 • 1 juvenile; Bocas del Toro, Hospital Point; 9.331967°N, 82.214817°W; depth 1–3 m, among coral rubble; 22 June 2023; K. N. White leg.; USNM 1739774. Diagnosis. Epistome produced, rounded, subequal to produced upper lip. Antenna 1 with strong callynophore in female. Gnathopod 1 propodus distally narrowing. Pereopod 7 basis greatly expanded, posteriorly rounded; merus greatly expanded, approximately 3 × width of carpus. Uropod 3 rami narrow, apically acute, and lacking plumose setae in female. Telson distal margin truncate, slightly emarginate. Distribution. Lesser Antilles: Bonaire Island (Stephensen 1933 a; Lowry and Stoddart 1997); Panama: Bocas del Toro (present study). Ecology and remarks. These amphipods occur among algae and coral rubble at depths of 1– 3 m. Panamanian specimens agree closely with previous descriptions of the species, with the exception of a slightly emarginate telson, with the exception of the uropod 3, which is documented for the first time in a female. This species is easily distinguishable based on the expanded pereopod 7 basis and merus. Panamanian specimens are a translucent white color when alive.