Metriaclima lundoense Jr, Black & Konings, 2013, new species
Creators: name: Stauffer Jr, Jay R.
name: Black, Kristin
name: Konings, Adrianus F.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Perciformes
Cichlidae
Metriaclima
Metriaclima lundoense

description: Metriaclima lundoense new species
Fig. 5 A–C
Pseudotropheus 'Black Dorsal Tanzania', Spreinat 1994 Pseudotropheus sp. 'black dorsal shauri', Konings 1995 Maylandia phaeos (non Stauffer et al.), Schraml 1998 Metriaclima sp. 'black dorsal cobalt', Konings 2001
Metriaclima sp. 'black dorsal lundo', Konings 2007
Holotype. PSU 4910, adult male, 81.5 mm SL, 11°13.438’ S, 34°44.076’ E, Lundo Island, Lake Malaŵi, Tanzania, Africa, A. F. Konings & J. R. Stauffer Jr. 28 Jan. 2004
Paratypes. PSU 4911, 17, AMNH 257794, 2 (63.2–83.4 mm), same data as holotype.
Diagnosis. The presence of bicuspid teeth in the anterior portion of the outer row on both the upper and lower jaws and a moderately sloped ethmo-vomerine block with a swollen rostral tip place this species in Metriaclima. The presence of a dark submarginal band in the dorsal fin in combination with distinct black lateral bars on a blue ground color in the male distinguish M. lundoense from all other member of the genus except from M. phaeos and M. cyneusmarginatus and some populations of M. flavifemina, M. fainzilberi, and M. zebra. Males of M. phaeos, M. flavifemina, M. cyneusmarginatus, and M. zebra that have a black band in the dorsal fin, all have lateral bars which extend onto the dorsal fin, a trait not found in M. lundoense. Male M. lundoense are distinguished from those of M. fainzilberi by a black band in the anal fin which is absent in the latter species. Female M. lundoense are distinguished from all other female Metriaclima, except from those of M. nigrodorsalis, by the presence of a black submarginal band in the dorsal fin. Female M. lundoense cannot reliably be differentiated from those of M. nigrodorsalis.
Description. Morphometric and meristic data in Table 3. Moderate elongate species (mean BD 30.1% SL) with greatest body depth at about base of eighth dorsal spine. Dorsal body profile with gradual curve to caudal peduncle with highest point at about eighth dorsal-fin spine; ventral body profile between pelvic and anal fin flat to slightly convex with upward curve to caudal fin. Dorsal head profile straight to slightly concave between snout tip and interorbital, making about 50–60° angle with body axis, then rounding to dorsal fin origin; eye (mean 36.2% HL) about one and a half times depth of preorbital. Snout in ¾ of anterior half of head with posterior orbit margin posterior of vertical median of head. Snout short with isognathous to slightly retrognathous jaws; teeth on lower jaw in 3 or 4 rows with outer row bicuspid (some lateral teeth unicuspid) and inner rows tricuspid.
Dorsal fin with XVII–XIX (mode XVIII) spines and 8–10 (mode 9) rays. Anal fin with III spines and 7 or 8 (mode 8) rays. First 3 or 4 dorsal spines gradually longer posteriorly with first spine about ½ length of fourth spine; last 14 spines slightly longer posteriorly with last spine longest; dorsal-fin rays with subacuminate tip, third or fourth ray longest, about to middle of caudal fin in males and to base of caudal fin in females. Anal-fin spines progressively longer posteriorly; fourth or fifth ray longest, length to almost middle caudal fin in some males, to about base of caudal in females. Caudal fin subtruncate to emarginate. Pelvic fin not to anal fin in females; length in males to third anal-fin spine. Pectoral fin rounded, paddle-shaped, short, to vertical through base of 11th or 12th dorsal spine.
Flank scales large, ctenoid; abrupt difference to small scales on breast and belly; cheek with 4–6 rows of small scales. Dorsal-fin and anal-fin rays with narrow proximal margin of tiny scales; tiny scales over proximal 75–90% of caudal fin.
Males with blue flank and 7–10 narrow, black bars; breast and belly blue; caudal peduncle blue. Head dark blue/purple with blue/green highlights; dark blue opercle spot; 2 light-blue interorbital bars; blue throat. Dorsal fin proximally blue with black submarginal band, sometimes over most of fin, white lappets, and with small yellow spots in rayed part. Caudal fin with light-blue/gray rays and orange tips; blue membranes. Anal fin black with narrow blue proximal margin and white lappets; 2 or 3 yellow ocelli. Pectoral fin clear. Pelvic fin with white/blue leading edge; anterior dark brown/black, posterior light brown/gray.
Females with light-brown ground coloration and blue and green highlights; occasionally with faint brown bars; belly and breast white/gray. Head light brown with green highlights; gray/black opercle spot; interorbital green/ brown; throat white. Dorsal fin proximally light brown; narrow black submarginal band; white lappets with orange tips. Caudal and anal fins gray/brown. Pectoral fin clear. Anal and pelvic fins with first few membranes black and remainder clear; occasionally with white leading edge.
Distribution. Metriaclima lundoense is known only from Lundo Island, Lake Malaŵi, Tanzania (Fig. 1).
Etymology. The name refers to Lundo Island, the only known location for this species.
description: Published as part of Stauffer Jr, Jay R., Black, Kristin & Konings, Adrianus F., 2013, Descriptions of five new species of Metriaclima (Teleostei: Cichlidae) from Lake Malaŵi, Africa, pp. 101-136 in Zootaxa 3647 (1) on pages 111-114, DOI: 10.11646/zootaxa.3647.1.6, http://zenodo.org/record/221386