Coryphopterus cuevae, Schwarzhans & Aguilera, 2024

Coryphopterus cuevae n. sp.

Figure 39m View Fig

Holotype NMB P15803 View Materials ( Fig. 39m View Fig ), Tortonian, Tuira FM, Pacific Panama, Darien, PPP 1137 .

(See figure on next page.)

Fig. 39 a View Fig Coryphopterus dicrus Böhlke & Robins,1960 ,extant, USNM 413296, 11°09’N 60°50’W, 5- 9 m. b Coryphopterus curasub Baldwin & Robertson, 2015 , extant, USNM 442134, Bonaire SL 31 mm. c–d Coryphopterus glaucofraenum Gill, 1863 , extant, USNM 388062, 17°21’N 63°15’W, 15- 18 m. e Coryphopterus thrix Böhlke & Robins, 1960 , extant,USNM 413803, Curacao. f Coryphopterus urospilus Ginsburg, 1938 , extant, coll. Schwarzhans leg. Fitch, Baja California. g–h Coryphopterus venezuelae Cervigón,1966 ,extant; g USNM 413044, S Caicos; h USNM 413804, Curacao. i Coryphopterus eidolon Böhlke & Robins, 1960 , USNM 397696, 17°30’N 63°13’W. j–l Coryphopterus tortugae ( Jordan, 1904); j extant, USNM 411902, 21°29’N 71°31’W; k–l Cumaná FM , Venezuela, PPP 3038, NMB P15801-02. m Coryphopterus cuevae n. sp., holotype, NMB P15803,Tuira FM, Darien, Panama, PPP 1137. n–q Coryphopterus rodriguezi n. sp.,Tuira FM, Darien, Panama; n holotype, NMB P15804, PPP 1612; o–q paratypes; o–p PPP 1612, NMB P15805-06; q PPP 1137, NMB P15807. r–t Coryphopterus xenosus n. sp.; r holotype, NMB P15808, Cubagua FM, Venezuela, PPP 2556; s–t paratypes; s Cubagua FM, Venezuela,PPP 2556,NMB P15809; t Manzanilla FM, Trinidad, PPP 2673, NMB P15810

Etymology Named after the Cueva, indigenous Indians living in Panama.

Diagnosis Otolith size 1.5 mm in length. OL:OH = 1.0. Otolith with and regularly curved dorsal rim. Preventral projection pointed; postdorsal projection rounded, slightly protruding. Sulcus relatively short and narrow, with strong ostial lobe and narrow cauda; OL:SuL = 1.8; sulcus inclination angle 13°. No subcaudal iugum. Ventral furrow regularly curved.

Description Otolith size 1.5 mm in length (unique holotype). OH:OT = 3.6. Otolith with high and regularly curved dorsal rim; predorsal angle rounded, relatively low; postdorsal projection broadly rounded, slightly protruding. Anterior rim slightly inclined towards dorsal, with prominent and pointed preventral projection and broad concavity at level of ostial tip. Posterior rim slightly inclined towards ventral, with broad, shallow concavity at level of tip of cauda and rounded orthogonal postventral angle. Ventral rim straight, horizontal. All rims smooth, except dorsal rim slightly undulating.

Inner face moderately convex in both directions. Sulcus relatively short, narrow, slightly deepened, its ostial and caudal tips tapering; ostial lobe strong, as much expanded as sulcus height; sulcus inclination angle 13°; OL:SuL = 1.8. No subcaudal iugum. Dorsal depression indistinct, several weak but long radial furrows ingressing dorsal field from dorsal rim of otolith; ventral furrow regularly curved, closest to ventral rim of otolith at central part. Outer face slightly convex, smooth.

Discussion Coryphopterus cuevae is easily recognized by its high and regularly curved dorsal rim resulting in a relatively low ratio OL:OH of about 1.0 and the strong ostial lobe. With the latter it resembles such otoliths as from the extant C. dicrus ( Fig. 39a View Fig ), C. glaucofraenum

( Fig. 39c–d View Fig ) or C. venezuelae ( Fig. 39g –h View Fig ) but is further distinguished by the less strongly protruding postdorsal projection.