FIGURE 1 |
Corydoras maclurei, holotype, MUSM 70671, 37.0 mm SL, Camanti District, Quispicanchi Province, Cusco Region, Peru, small stream tributary to the rio Araza, a bigger affluent of the rio Inambari, itself a tributary to the rio Madre de Dios, rio Madeira basin.
FIGURE 2 |
Head osteological pattern in c&s paratypes of Corydoras maclurei, showing (A) general morphology in lateral view (CITL 430, 47.8 mm SL), with (B) the detail of the lateral ethmoid morphology (CITL 430, 38.2 mm SL). Abbreviations: f: frontal, fdbp: first dorsolateral body plate, io1–2: infraorbital 1 and 2, iop: interopercle, le: lateral ethmoid, n: nasal, me: mesethmoid, op: opercle, pes: pterotic-extrascapular, pop: preopercle, prh: posterodorsal ridge of hyomandibula, pso: parieto-supraoccipital, sph: sphenotic. Scale bar = 1 mm.
FIGURE 3 |
Dorsal view of the head of a c&s paratype of Corydoras maclurei, CITL 430, 47.8 mm SL. Abbreviations: f: frontal, fdbp: first dorsolateral body plate, n: nasal, me: mesethmoid, pes: pterotic-extrascapular, pso: parieto-supraoccipital, sph: sphenotic. Scale bar = 1 mm.
FIGURE 4 |
Predorsal region of trunk in c&s paratypes of Corydoras maclurei, showing the variation in the distance between the posterior process of the parieto-supraoccipital and the nuchal plate, which ranges from (A) clearly separated from each other (CITL 430, 45.6 mm SL) to (B) separated but nearly contacting (CITL 430, 38.2 mm SL). Abbreviations: fdbp: first dorsolateral body plate, np: nuchal plate, pso: parieto-supraoccipital, spn: spinelet. Dotted lines indicate the limits of the tip of the posterior process of the parieto-supraoccipital and anterior tip of the nuchal plate. Red arrows indicate the small platelets between parieto-supraoccipital and nuchal plate. Scale bar = 1 mm.
FIGURE 5 |
Infraorbital series in lateral (A) and dorsal (B) views, and (C) suspensorium plus operculum in lateral view of a c&s paratype of Corydoras maclurei (CITL 430, 38.2 mm SL). Abbreviations: aa: angulo-articular, d: dentary, hym: hyomandibula, io1–2: infraorbital 1 and 2, iop: interopercle, mp: metapterygoid, op: opercle, pop: preopercle, prh: posterodorsal ridge of hyomandibula, q: quadrate. Black arrow indicates the roughly triangular process on middle portion of posterior margin of infraorbital 2, and red arrows indicate inner laminar expansion of both infraorbitals. Scale bar = 1 mm.
FIGURE 6 |
Lateral view of (A) the dorsal-fin spine (38.2 mm SL) and dorsal view of (B) the right pectoral-fin spine (47.8 mm SL), showing the serration patterns in c&s paratypes of Corydoras maclurei (CITL 430). Scale bars = 1 mm.
FIGURE 7 |
Pelvic girdle and caudal skeleton in c&s paratypes of Corydoras maclurei (CITL 430). A. Anterior internal process of basipterygium slightly laterally expanded, and anterior external process not expanded posteriorly (38.2 mm SL); B. Anterior internal process of basipterygium conspicuously laterally expanded, and anterior external process slightly expanded posteriorly (47.8 mm SL); C. General morphology of caudal skeleton, showing the small cartilage (yellow arrow) between upper principal and procurrent caudal-fin rays (38.2 mm SL). Abbreviations: bp: basipterygium, ccc: compound caudal centrum, cfr: caudal-fin principal rays, dpcr: dorsal procurrent rays, epu: epural, has: haemal spine, hyp 1–5: hypurals 1 to 5, nes: neural spine, pae: anterior external process, pai: anterior internal process, par: parhypural, pi: dorsal ischiac process, pu 2–4: preural centra 2 to 4, un: uroneural. Red arrows in A and B indicate the dorsal lamina on anterior internal process of basipterygium. Scale bars = 1 mm.
FIGURE 8 |
Uncatalogued aquarium specimen of Corydoras maclurei (A) showing its typical color pattern in life (lateral view), collected in its type-locality (B), a small stream tributary to the rio Araza, rio Madre de Dios basin, rio Madeira basin in Peru.
FIGURE 9 |
Uncatalogued aquarium specimens of Corydoras maclurei (not measured) showing variations of the color pattern in life: specimens can variably present greyish orange (A) or reddish orange (B) ground color of body. In C, the detail of a conspicuously reddish orange dorsal fin. Anterior portion of first dorsolateral body plate typically with orange (D) or yellow (E) bright patch. Photographs (D) and (E) by Ian Fuller.
FIGURE 10 |
Map showing the geographical distribution of Corydoras maclurei (yellow star). The symbol represents more than one locality.
FIGURE 11 |
Ontogenetic series of Corydoras maclurei (bred under aquarium conditions) showing general changes in external morphology and color pattern in specimens with 8.0 mm TL (A), 12.0 mm TL (B), 16.0 mm TL (C), 21.0 mm TL (D), and 28.0 mm TL (E).
FIGURE 12 |
Uncatalogued specimens (not measured) of (A) Corydoras hephaestus and (B) C. melanotaenia photographed alive in lateral view, showing general color and morphological patterns. Photograph (A) by Fernando Dagosta and (B) by Robert McLure.
FIGURE 13 |
Type specimens of Corydoras aeneus, showing the lectotype (A, USNM 1116) and paralectotypes (B, C, USNM 205649 and USNM 92819, respectively) of Hoplosoma aeneum. Red arrows in C indicates the area affected by a malformation on predorsal region of body. Photographs by Sandra Raredon. Scale bar = 1 mm.
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