Parietal crests in males broad and short, not greatly elongated when compared with E. falcata. Dorsal fin rays 9.5-10.5; anal 7.5 (Ref. 41422). Adults develop a curious bony protrusion on top of the head (Ref. 48635).

Description: Characterized by whitish color; head and body with eight reddish-brown bars; pectoral fins with brown banding; reddish-brown dorsal spines; deeply incised membranes of spinous portion of dorsal fin; enlarged and wing-like pectoral fins with rays fully connected by membranes except lower 7-8 unbranched rays slightly incised; short tentacle above each eye; depth of body 2.8 in SL (Ref. 90102).