Stenothoe valida Dana, 1853

Figs 9, 22 G

Stenothoe validus Dana, 1853: 924–925, pl. 63, fig. 1.

Probolium polyprion: Costa 1853: 173.

Probolium megacheles: Heller 1866: 13–14, pl. 2, figs 1, 2.

Stenothoe valida: Stebbing 1906: 194; LeCroy 2011: 726, fig. 570; Krapp-Schickel 2015: 40–45, figs 21–23.

Stenothoe assimilis: Chevreux 1908: 4–8, figs 4–6.

Stenothoe ornata: Barnard 1930: 341, fig. 16.

Material examined.

Panama • 1–3.5 mm • 1 ♀; Bocas del Toro, Swan Caye; 9.4533°N, 82.2983°W; depth 3 m; among brown algae, filamentous red algae, and hydroids; 4 Aug 2005; M. Faust, E. Gaiser, T. Haney, S. Richardson, M. Sorenson leg.; GCRL 6676 • 1 juvenile; Bocas del Toro, Cayo Solarte; 9.3336°N, 82.2189°W; depth 0.5 m; among hydroids and algae; 7 Aug 2005; T. A. Haney leg.; GCRL 6677 • 1 ♀; Bocas del Toro, Crawl Caye; depth 1–4 m; mangrove root scraping; 25 June 2023; K. N. White leg.; USNM 1762921 .

Diagnosis.

Head anterior margin rounded, eye relatively large. Gnathopod 2 of female propodus subovate, palmar angle absent, palm crenulate. Gnathopod 2 of male propodus palmar angle absent, with distal palmar tooth (not illustrated). Pereopod 7 merus posterodistal lobe nearly reaching distal margin of carpus. Uropod 1 peduncle lacking distoventral spur; inner ramus with two spine-setae. Uropod 3 second article of ramus subequal in length with first article of ramus.

Distribution.

This species has been reported as nearly cosmopolitan in tropical and warm temperate seas. Western Atlantic distribution: USA: North Carolina (Fox and Bynum 1975), South Carolina (LeCroy 2011), Biscayne Bay, Florida (LeCroy 2011), the Dry Tortugas, Florida (Pearse 1932); Bonaire: Bonaire, Kralendijk (Krapp-Schickel 2015); Bermuda: Harrington Sound (Krapp-Schickel 2015); Colombia: Barú (Ortiz and Lemaitre 1994); Brazil: Rio de Janeiro (Dana 1853; Wakabara and Serejo 1998); Panama: Bocas del Toro (present study).

Ecology and remarks.

This species occurs among algae, hydroids, and fouling organisms in Panama up to depths of 4 m. Previous reports list this species to depths of 33 m (LeCroy 2011). Panamanian specimens agree closely with previous descriptions of this species from the Western Atlantic (Stebbing 1906; LeCroy 2011; Krapp-Schickel 2015) and can be distinguished by the elongate merus of pereopod 7. Color of living specimens is unknown.