Guianacara, Kullander & Nijssen, 1989

Key to the species of Guianacara View in CoL

1a. Two supraneurals; produced lappets on tips of anterior dorsal-fin spines; dark midlateral bar present, or a faint midlateral bar with a darker midlateral spot ……………………………………(subgenus Guianacara ) 2

1b. One supraneural; no produced lappets on tips of anterior dorsal-fin spines; midlateral bar absent, midlateral spot present………………………… Guianacara oelemariensis (subgenus Oelemaria )

2a. Midlateral bar thin, up to three scales wide at its widest point (two and a half to three scales at its widest point, always narrowing to one and a half or two scales at its thinnest point) ………………………………………………3

2b. Midlateral bar broad, at least three scales wide at its thinnest point (four scales at its widest point, sometimes narrowing to three scales) …………………………………4

3a. Branchiostegal membranes whitish; infraorbital stripe continuously dark across the cheek to the interopercle in adults and juveniles……………………………… G. cuyunii

3b. Branchiostegal membranes dusky; infraorbital stripe continuously dark across the cheek to the interopercle in juveniles, but faded from orbit to dorsal edge of preopercle in adults, forming a “teardrop” mark across the preopercle and interopercle…………………………………… G. dacrya

4a. Black pigmentation of anterior three dorsal-fin spines not retainedinadults…………………………………………….5

4b. Black pigmentation of anterior three dorsal-fin spines retainedinadults…………………………………………….6

5a. Midlateral bar uniform; white spots on dorsal-fin larger than darker markings surrounding them …………… G. geayi

5b. Midlateral bar not uniform, midlateral spot located above the upper lateral line; white spots on dorsal-fin smaller than darker markings surrounding them……. G. sphenozona

6a. Midlateral spot small, round; midlateral bar wedge shaped (thinner ventrally than dorsally) ……………… G. stergiosi

6b. Midlateral spot large, oval shaped; midlateral bar not wedge shape (uniform thickness) …………… G. owroewefi