-
head broad, rim wide, ends in strong spine
rostral plates short, broad
large nasal spinebarbels: lip 1 v long, chin 31-42 -
face rim: wide, rippled edge, ends in wide, blunt triangle
rostral plates short, broad, triangularDs & pectoral: outer 1/2 blackbarbells: lip - 1 v long + 5; chin 11-13 -
head broad; rim wide, undulating, ends in wide wing
rostral plates v shortbarbels: lip - 1 v long filament + 2, slender, chin - 8-9 in 4-5 clusters (each with 1 large)nostrils: strong curved spinespectoral: dark upper base, outer 2/3 black
C: base dark bar, top 1/2 outer 1/3 black -
head v broad, wide between eyes
face rim not wide, end - sharp, flat spine
rostral plates v short, broadbarbells: lip - short filament + 5-12; chin - 12-18 -
head medium widebarbells: lip - short filament + 5-6; chin 17-20face rim medium wide, undulating, serrated, end - flat triangular wing, rear edge forward
rostral plates medium, < snout