Descriptions of five new species of Metriaclima (Teleostei: Cichlidae) from Lake Malaŵi, Africa Author Stauffer Jr, Jay R. Author Black, Kristin Author Konings, Adrianus F. text Zootaxa 2013 3647 1 101 136 journal article 10.11646/zootaxa.3647.1.6 18569fb0-f346-456c-8685-831e84073e7a 1175-5326 221386 D57B95E8-3991-4B30-B22D-83978924D05E Key to the formally described species of Metriaclima 1 Females beige to yellow with yellow pigment in anal fin...................................................... 2 - Females brown, dark gray or blue without yellow anal fin..................................................... 15 2 Males with black markings in dorsal fin................................................................... 3 - Males without black markings in dorsal fin................................................................ 5 3 Males with yellow pigment on cheek and breast............................................................ 4 - Males without yellow pigment on cheek and breast................................................... M. phaeos 4 Cheek depth less than 25% body depth (20.3–24.8%BD)........................................... M. flavifemina - Cheek depth more than 25% body depth (25.3–32.0% BD)....................................... M. nigrodorsalis 5 Six or fewer bars (distinct or faint) below dorsal fin......................................................... 6 - Seven or more bars (distinct or faint) below dorsal fin........................................................ 7 6 Lower jaw length 28.4–33.5 %HL (mean 31.2)....................................................... M. aurora - Lower jaw length 34.6–36.7 %HL (mean 35.4)................................................. M. xanthos (part) 7 Males with distinct vertical bars......................................................................... 8 - Males without distinct vertical bars..................................................................... 11 8 Males with entirely black pelvic fin.............................................................. M. sciasma - Males with clear pelvic fin or dark band in pelvic fin........................................................ 9 9 Males with black submarginal band in anal fin............................................................. 10 - Males without black pigment in anal fin....................................................... M. hajomaylandi 10 Males with yellow dorsal fin................................................................ M. xanthos (part) - Males with white/blue dorsal fin....................................................... M. mossambicum (part) 11 Males with yellow occipital region................................................................ M. barlowi - Males with blue occipital region........................................................................ 12 12 Males with distinct interorbital bar............................................................... M. benetos - Males without distinct interorbital bar................................................................... 13 13 Males with yellow dorsal fin.......................................................... M. mossambicum (part) - Males with white/blue dorsal fin........................................................................ 14 14 Fourteen–nineteen, mode 16 of teeth in outer row of lower left jaw..................................... M. glaucos - Fifteen–twenty five, mode 22 of teeth in outer row of lower left jaw................................ M. chrysomallos 15 Females light blue or white............................................................................. 16 - Females brown to blue-gray........................................................................... 18 16 Females with distinct vertical bars............................................................. M. lombardoi - Females without distinct vertical bars.................................................................... 17 17 Lower jaw length 29–34%HL............................................................... M. nkhunguense - Lower jaw length 35–43%HL.................................................................. M. callainos 18 Males without distinct vertical bars..................................................................... 19 - Males with distinct vertical bars........................................................................ 23 19 Males with orange to red pigment in dorsal fin............................................................ 20 - Males with blue dorsal fin............................................................................. 21 20 Males with yellow pectoral fin................................................................... M. mbenjii - Males with clear pectoral fin.................................................................. M. greshakei 21 Males with yellow gular region............................................................. M. xanstomachus - Males with white gular region.......................................................................... 22 22 Females light brown....................................................................... M. zebra (part) - Females dark gray-blue........................................................................ M. estherae 23 Five or fewer bars below dorsal fin...................................................................... 24 - Six or more bars below dorsal fin....................................................................... 25 24 Teeth in outer jaw of left lower jaw 8–11........................................................ M. lanisticola - Teeth in outer jaw of left lower jaw 12–17.......................................................... M. purum 25 Males with orange to red pigment in dorsal fin............................................................ 26 - Males with blue dorsal fin............................................................................ 28 26 Anal fin same orange color as dorsal fin.............................................. M. cyneusmarginatum (part) - Anal fin blue....................................................................................... 27 27 Black submarginal band in anal fin...................................................................... 28 - No black band in anal................................................................................ 29 28 Distance between snout and pelvic-fin origin more than 35 %SL..................................... M. pambazuko - Distance between snout and pelvic-fin origin less than 33 %SL....................................... M. emmiltos 29 Base of pectoral fin in males yellow........................................................ M. fainzilberi (part) - Base of pectoral in males white to blue......................................................... M. pyrsonotos 30 Anal fin black and black streaks in tail fin................................................................ 31 - Anal fin blue and no black streaks in tail.................................................................. 31 31 Occipital region light blue without dark bars or spots................................................ M. pulpican - Occipital region blue with dark bar.............................................................. M. lundoense 32 Base of pectoral fin in males yellow....................................................... M. fainzilberi (part) - Base of pectoral in males white to blue................................................................... 33 33 Males without black submarginal band in dorsal fin........................................................ 34 - Males with black submarginal band in dorsal fin........................................................... 36 34 Males without extension of lateral bars onto dorsal fin....................................................... 35 - Males with extension of lateral bars onto dorsal fin........................................................ 37 35 Fewer than 6 rows of teeth in lower jaw........................................................ M. zebra (part) - More than 6 rows of teeth in lower jaw............................................................ M. midomo 36 Males with black pigment in anal fin.......................................................... M. zebra (part) - Males without black pigment in anal fin.............................................. M. cyneusmarginatum (part) 37 Five to 8 tooth rows in lower jaw................................................................ M. tarakiki - Three to 4 tooth rows in lower jaw............................................................ M. zebra (part)