A new species of Trimma is described from South-West Islands of Palau. Trimma hamartium n. sp. lacks scales on the cheeks and opercle, has 8–9 scales in the predorsal midline, 17–19 pectoral-fin rays with 5–10 branched rays in the middle of the fin, an unbranched 5th pelvic-fin ray that is 51–64% the length of the 4th ray, 17–19 gill rakers on the outer surface of the first gill arch, an U-shaped interorbital trench with a narrow, slit-like postorbital trench ending at the last papilla in row p, and has 6 papillae in row c beneath the eye. When freshly collected, the species is very similar in appearance to T. preclarum, with which it is syntopic at three of the more northern islands of the South-West Islands.
Keywords: Pisces, taxonomy, Western Pacific, coral reef gobies, COI gene
Richard Winterbottom. 2018. A New Species of Trimma (Pisces; Gobiidae) from the South-West Islands of Palau, western Pacific Ocean. Zootaxa. 4370(2); 123–136. DOI: 10.11646/zootaxa.4370.2.2
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ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.
Five new species belonging to the gobiid fish genus Grallenia of the tropical western Pacific Ocean are described from sand-bottom habitats. Grallenia compta n. sp. (11 specimens, 14.9–17.3 mm SL) from Milne Bay Province, Papua New Guinea and Grallenia rubrilineata n. sp. (81 specimens, 8.8–15.8 mm SL) from Luzon, Philippines share a suite of features that comprises an absence of cephalic sensory-canal pores, a rectangular first dorsal fin without a filamentous extension of the first spine, and the anterior and posterior scales separated by a scaleless gap, with 15–22 longitudinal scales in the posterior series. The two species differ from each other in dorsal- and anal fin-ray counts (8–9 for G. compta n. sp. vs. 9–11, usually 10, for G. rubrilineata n. sp.), scalation patterns, and coloration. A third new species,Grallenia dimorpha n. sp. (34 specimens, 9.8–16.7 mm SL) from Papua New Guinea is similar, except it has a continuous series of longitudinal scales without a gap, and females possess a triangular first dorsal fin featuring a filamentous extension of the first spine. The last two species, Grallenia lauensis n. sp. (two females, 11.1–11.4 mm SL) and Grallenia solomonensis n. sp. (three females, 11.4–12.5 mm SL), are described from Fiji and the Solomon Islands, respectively. They exhibit similar diagnostic features including the presence of cephalic sensory-canal pores, usually 7 segmented dorsal- and anal-fin rays, and most body scales restricted to the caudal peduncle. Grallenia solomonensis n. sp. differs from G. lauensis n. sp. in having several mid-lateral scales immediately behind the pectoral-fin base (vs. none), 16 (vs. 15) pectoral-fin rays, pelvic-fin rays with 2–3 branch points (vs. a single point), and a truncate (vs. slightly emarginate) caudal fin. An additional 33 non-type specimens, 7.0–15.6 mm SL, from Australia (southern Great Barrier Reef and northwestern Coral Sea) are provisionally identified as G. lauensis n. sp. However, at least some Australian specimens differ slightly in possessing branched segmented dorsal-fin rays and pelvic-fin rays with more than one branch point. Although fins are damaged in most specimens, two Australian males exhibit a long, filamentous first dorsal-fin spine.
Etymology. The species is named compta (Latin: ornamented), with reference to the orange markings on the head, body, and fins. It is treated as a feminine singular adjective.
Distribution and habitat. The new species is currently known only from Sideia Island in Milne Bay Province of Papua New Guinea (Fig. 6), but is no doubt more widespread in this large marine province. The habitat consists of large (5–10 m2 ), flat, sandy areas surrounded by live coral, in depths of about 14–15 m.
Figure 5: Adult males of species of Grallenia: A) G. compta; B) G. dimorpha; C) G. rubrilineata (G.R. Allen & M.V. Erdmann).
Figure 10. Grallenia dimorpha, male (upper) and female (lower), approx. 15 mm SL, underwater photographs in 16 m, White Island, West New Britain Province, Papua New Guinea (G.R. Allen).
Grallenia dimorpha, n. sp.
Dimorphic Goby
Etymology. The species is named dimorpha (Latin: two shapes) with reference to the sexual dimorphism in relation to dorsal-fin shape. It is treated as a feminine singular adjective.
Distribution and habitat. The new species is currently known only from Papua New Guinea (Fig. 6). The type series was collected off the southern coast of New Britain Island and the non-type specimens from the vicinity of Madang and near Port Moresby. The habitat consists of sandy substrate in about 8–18 m.
Figure 14. Grallenia lauensis, female, approx. 11 mm SL, underwater photographs in 30–35 m, Lau Archipelago, Fiji (M.V. Erdmann).
Grallenia lauensis, n. sp.
Lau Goby
Etymology. The species is named lauensis with reference to the Lau Archipelago type locality.
Distribution and habitat. The new species is currently known from the southern Lau Archipelago of southeastern Fiji and 33 non-type specimens from the Great Barrier Reef and northwestern Coral Sea. The Lau habitat consists of extensive gradual slopes of clean white sand in 30–35m depth. Both Lau sites were located in channel passes from the outer reef to extensive inner lagoons, and were hence subject to frequent strong currents and high rates of water exchange.
Figure 18. Grallenia rubrilineata, male (right), female (center), and juvenile (left) approx. 8–15 mm SL, underwater photograph in 15 m, Ligpo Island near Anilao, Batangas Province, Philippines (G.R. Allen).
Grallenia rubrilineata, n. sp.
Redstripe Goby
Etymology. The species is named rubrilineata (Latin: “red-lined” or “red-striped”), with reference to the characteristic marking on the dorsal fin of adult males. It is treated as a feminine compound adjective.
Distribution and habitat. The new species is currently known from the Philippines, including the type locality near Anilao in Batangas Province, Luzon, and on the basis of a photograph from Dauin, Negros in the Central Visayas Group. A female specimen examined at WAM (P.30410-015), 18 mm SL, from Bohaydulong Island, Sabah State, Malaysia is probably G. rubrilineata, judging from fin-ray counts, scale pattern, and lack of head pores; however, additional specimens, including males, would be required to verify this identification. The habitat at Anilao consists of extensive areas of sand/silt substrate in about 12–15 m. The new species was very abundant in some areas, including the type locality, with an estimated abundance of 10–15 individuals per square meter. It was typically seen in small groups.
Grallenia solomonensis, n. sp.
Solomons Goby
Etymology. The species is named solomonensis with reference to the Solomon Islands type locality.
Gerald R. Allen and Mark V. Erdmann. 2017. Description of Five New Species of Marine Gobies (Teleostei: Gobiidae) of the Genus Grallenia from the tropical western Pacific Ocean. Journal of the Ocean Science Foundation.27; 20–47. http://www.oceansciencefoundation.org/josf27c.html
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شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا
رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا
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ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.
A new species sandperch, Parapercis altipinnis, is described based on the holotype collected from Cebu, the Philippines at 55–65 m by SCUBA. The new species belongs to the P. cylindrica complex and can be distinguished by an extremely high first dorsal fin, the first spine slightly longer than the head; 3 predorsal scales; 42 or 43 lateral-line scales; teeth present on vomer and palatines. The body is reddish dorsally and blackish ventrally, with 5 large brownish saddles alternating with white bands on dorsal surface; scattered dots on top of head, first dorsal fin and dorsal surface; first dorsal fin milky white with 5 black marks on anterior margin; a black broad band below eye; cheek and throat blackish red surrounding by white color; row of 10 short white bars along the lateral side of body axis; row of 9 deep red to blackish bars on lower half of lateral side of body; base of pelvic fin and lower margin of caudal fin blackish; rows of black spots on soft dorsal fin. A key to the species of the complex is provided.
Keywords: Pisces, Teleostei; taxonomy, Parapercis altipinnis, new species
FIGURE 1. Living or fresh coloration of Parapercis altipinnis sp. nov., holotype. A. lateral view of right side; B. lateral view of left side of head; C. dorsal view;
Holotype. NMMB-P26107, 50.3 mm SL, Cebu, the Philippines, ca. 55–65 m, hand net, SCUBA diving, and purchased from an aquarium in Belgium in December, 2016.
Diagnosis. Dorsal-fin rays V, 21; anal-fin rays I, 17; pectoral-fin rays 14 or 15; lateral-line scales 42 or 43; gill rakers on first gill arch 3 + 7; predorsal scales 3; small, partly embedded, cycloid scales on anterior portion and large ctenoid scales in about 4 rows on posterior portion of cheek; single row of vomerine teeth in curved band; palatine teeth present; prominent sharp spine at upper edge of subopercle present; body depth 4.1 in SL (24.3% SL); first two dorsal-fin spines elongate, first slightly longer than head length, second about half length of first; membrane from last dorsal-fin spine joined to base of first soft ray; caudal fin slightly rounded. When alive, body reddish dorsally and blackish ventrally; 5 large brown saddles on dorsal surface; scattered dots on top of head, first dorsal fin and dorsal surface of back; first dorsal fin whitish with 5 black mark on anterior margin of first spine; a black band below eye; cheek and throat blackish; row of 10 white short bars along lateral side of body axis; row of 9 blackish red bars on lower half of lateral body; base of pelvic fin and lower half of caudal fin blackish; row of black spots on base of soft dorsal fin.
Etymology. The specific name is derived from the Latin alti (long) and pinnis (fin) in referring to the extremely high first dorsal fin.
Distribution. Known only from the holotype collected from Cebu, the Philippines, at around 55–65 m depth.
Ecological note. That Parapercis is generally believed to be protogynous and that the change from female to male is often accompanied by color changes, but not elongation of certain fin rays (Ho, pers. obse.). The holotype has a pairs of saccus connecting to the cloaca, which are most likely ovaries but without eggs. The specimen might be a juvenile or a mature female just after spawning. Underwater photographs of a male individual are provided in Kuiter & Tonozuka (2001; as Parapercis sp. 5). It shows sexual dimorphism in the coloration, but not the high dorsal fin, in present species.
Hsuan-Ching Ho and Miranda V. Heden. 2017. A New Species of the Sandperch Genus Parapercis from the Philippines (Perciformes: Pinguipedidae). Zootaxa. 4341(4); 563–569. DOI: 10.11646/zootaxa.4341.4.8
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شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا
رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا
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ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.
Pseudanthias tequila is described on the basis of two specimens from the Ogasawara Islands. It also is recorded from the Mariana Islands on the basis of colour photographs. The species belongs to a complex that includes P. randalli (Lubbock & Allen), P. pulcherrimusHeemstra & Randall, P.flavicauda Randall & Pyle, P. oumatiWilliams, Delrieu-Trottin & Planes, and a potentially new species from the Line Islands. Species within the complex are distinguished on the basis of male live colouration, morphometric details and gill-raker and scale counts. Colour photos of all five species are provided.
Male Pseudanthias tequila: A) from Ototo-jima, Chichi-jima Islands, Ogasawara Islands, Japan (KPM-NR 179391A, photo by O. Morishita); B) from Tinian, Mariana Islands (photo by N. Tsuji) FIGURE 6. Group ofPseudanthias tequila n. sp., Tinian, Mariana Islands, Micronesia. Photo by N. Tsuji.
Diagnosis. The following combination of characters distinguishes Pseudanthias tequila from congeners: dorsal rays X,16; anal rays III,7; pectoral rays 18; third dorsal spine prolonged in males; third segmented anal-fin ray longest; lateral-line scales 46–47; no auxiliary scales on body; interopercle and subopercle with distinct serrations in adults; males in life with upper body beneath anterior part of dorsal fin purple to pink with orange-red stripe, dorsal fin greenish yellow anteriorly, posteriorly red with blue basal area, anterior part of anal fin red, and pelvic fins bright yellow.
Habitat and distribution. Pseudanthias tequila is described on the basis of two specimens from Ototo-jima, Chichi-jima Islands, Ogasawara Islands, Japan. We also record it from Guam, Saipan and Tinian in the Mariana Islands on the basis of photographs (Figure 7). Kuiter’s (2004) photograph of an individual of “Pseudanthias cf randalli”, stated to be from Palau, is referable to P. tequila. However, R.F. Myers (pers. comm.) advised us that the photograph, by Hiroyuki Kimura, is actually from Saipan. Other photographs from Palau are referrable to the closely related P. randalli (Lubbock & Allen, 1978). The original description of P. randalli also included paratypes from Palau. Pseudanthias tequila appears to be mostly found in caves on reef slopes in 40–60 m, earning it the popular name of “cave anthias”. In Saipan and Tinian, however, it occurs in the open on reef slopes dominated by Halimeda and Caulerpa algae (Figures 4B & 6).
Etymology. The specific epithet refers to the alcoholic beverage tequila sunrise, alluding to the vibrant life colours of the males of the species. To be treated as a noun in apposition.
Anthony C. Gill, Yi-Kai Tea and Hiroshi Senou. 2017. Pseudanthias tequila, A New Species of Anthiadine Serranid from the Ogasawara and Mariana Islands. Zootaxa. 4341(1); 67–76. DOI: 10.11646/zootaxa.4341.1.5
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شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا
رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا
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ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.
A sixth member of the Chrysiptera oxycephala group of Pomacentridae,Chrysiptera burtjonesi n. sp., is described on the basis of 24 specimens, 20.5–48.2 mm SL, collected at the Solomon Islands in the western Pacific Ocean. It differs from other members of the group, including C. ellenae (Raja Ampat Islands, West Papua Province in Indonesia), C. maurinae (Cenderawasih Bay, West Papua Province), C. oxycephala (central Indonesia, Philippines, and Palau), C. papuensis (northeastern Papua New Guinea), and C. sinclairi (Bismarck Archipelago and islands off northeastern Papua New Guinea), on the basis of its distinctive color pattern and a 6.9% divergence in the sequence of the mitochondrial control region from its closest relative (C. maurineae). Adults are primarily grayish brown to greenish except bright yellow on the ventralmost head and body, including the adjacent pelvic and anal fins. Juveniles are mostly neon blue to dark blue with bright yellow pelvic and anal fins. In addition, it is the only species besides C. sinclairi that usually lacks embedded scales on the preorbital and suborbital bones.
Figure 2. Chrysiptera burtjonesi, Solomon Islands, underwater photographs: A) juvenile, approx. 12 mm SL, B) juvenile, approx. 20 mm SL, C) subadult, approx. 35 mm SL, D) adult, approx. 45 mm SL (G.R. Allen).
Chrysiptera burtjonesi, n. sp. Burt’s Damselfish Diagnosis. A species of the pomacentrid genus Chrysiptera with the following combination of characters: dorsal-fin rays XIII,11 (rarely 10 or 12); anal-fin rays II,12 (rarely 13); pectoral-fin rays 15 (14–16); gill rakers on first branchial arch 9–11+20–22, total gill rakers 29–32; tubed lateral-line scales 13–16 (usually 14–15); preorbital+suborbital scales usually absent, occasionally 1–3 embedded scales present; color of adult overall grayish brown to greenish (sometimes with neon blue/green transverse streak on each scale) with translucent to pale greenish fins, except bright yellow ventrally on head, body, and adjacent anal and pelvic fins, a broad yellow band from base of first few dorsal-fin spines to outer edge of last dorsal-fin spine; juvenile neon blue on head, most of body (above diagonal line from pelvic-fin base to base of uppermost caudal-fin ray), and dorsal fin, remainder of body and adjacent fins bright yellow.
Figure 3. Chrysiptera burtjonesi, underwater photograph, approx. 40 mm SL, Russell Group, Solomon Islands. Figure 2. Chrysiptera burtjonesi, Solomon Islands, underwater photographs: A) juvenile, approx. 12 mm SL, B) juvenile, approx. 20 mm SL.
photos: G.R. Allen
Etymology. This species is named in honor of photographer and underwater guide par excellence Burt Jones of Sequim, Washington, USA. Burt and his partner Maurine Shimlock were pioneers for the promotion of dive tourism at the Solomon Islands and, more recently, have been instrumental in the tremendous popularity of the West Papuan region by means of their excellent underwater guidebook to the area and creation of the highly informative Bird’s Head Seascape website (birdsheadseascape.com). Distribution. The new species is known only from the Solomon Islands. It was collected or observed by the authors at the following islands and reefs: Isabel, Choiseul, Makira, Malaita and nearby Alite Reef, Shortland Islands, New Georgia Group, Russell Group, and the Florida Group.
Gerald R. Allen, Mark V. Erdmann and N.K. Dita Cahyani. 2017. A New Species of Damselfish (Chrysiptera: Pomacentridae) from Coral Reefs of the Solomon Islands. Journal of the Ocean Science Foundation.28; 10–21. http://www.oceansciencefoundation.org/josf/josf28b.pdf
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شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا
رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا
تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا
ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.
Pempheris familia sp. nov. is described on the basis of two specimens collected from the Ogasawara Islands, Japan. The new species is most similar to Pempheris japonica Döderlein in Steindachner and Döderlein 1883, endemic to Japanese and Korean waters, in having adherent scales with strong ctenii on the lateral and ventral surfaces of the body, each scale expanded basally and distally due to central narrowing, the abdomen with a U-shaped cross-sectional outline, a large ventral fenestra between the coracoid and cleithrum, 10 dorsal-fin soft rays and 35 or 36 anal-fin soft rays. However, Pempherisfamilia can be distinguished from P. japonica by the following combination of characters: 84–88 pored lateral-line scales; 14 or 15 scale rows above the lateral line; 50–55 predorsal scales; 26 circumpeduncular scales; and a distinct blackish blotch on the pectoral-fin base. Pempheris familia appears to be endemic to the Ogasawara Islands.
Keywords: Sweeper, Taxonomy, Morphology, New species, Coral reefs
Fig. 1 Fresh specimens of Pempheris familia sp. nov. from Ototo-jima Island, Ogasawara Islands, Japan. KAUM–I. 74713, holotype, 153.1 mm SL (upper); NSMT-P 124563, paratype, 139.5 mm SL (lower); photo by K. Kuriiwa
Pempheris familia sp. nov.
(Standard Japanese name: Bonin-hatampo)
Diagnosis.A species of Pempheris with the following combination of characters: lateral and ventral body scales strongly ctenoid, adherent, with distinct basal and distal portions; abdomen cross-sectional outline U-shaped; large ventral fenestra between coracoid and cleithrum; 10 dorsal-fin soft rays; 35–36 anal-fin soft rays; 84–88 pored lateral-line scales; 14–15 scale rows above lateral line; 50–55 predorsal scales; 26 circumpeduncular scales; body orange-copper; blackish blotch on fins limited to tip of dorsal, anal and caudal fins; distinct blackish blotch on pectoral-fin base.
Etymology. The specific name of the new species, familia, means “family” in Greek. The Ogasawara Islands include ca. 30 islands, many of them having been given family-like names; for example, Chichi-jima = father island, Haha-jima = mother island, Ane-jima = older sister island. Ototo-jima, where the type specimens were collected, and Ani-jima, where the underwater photographs were taken, refer to younger and older brothers, respectively.
Fig. 2 Underwater photographs of Pempheris familia sp. nov. from Ani-jima Island, Ogasawara Islands, Japan. Single individual (upper); school in an underwater rock recess (lower) (ca. 10 individuals)
Keita Koeda and Hiroyuki Motomura. 2017. A New Species of Pempheris (Perciformes: Pempheridae) endemic to the Ogasawara Islands, Japan. Ichthyological Research. DOI: 10.1007/s10228-017-0586-3
كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا
شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا
رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا
تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا
ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.
The Pseudochromis reticulatus complex is diagnosed to include species of Pseudochromis with the combination of a pointed caudal fin (rounded with middle rays produced), a reticulated colour pattern on the upper part of the body, dorsal-fin rays modally III,26, anal-fin rays modally III,15, and pectoral-fin rays modally 18. Members of the complex include P. reticulatusGill & Woodland, P. pictus Gill & Randall, P. tonozukai Gill & Allen, P. jace Allen, Gill & Erdmann and P. stellatus new species. The last-named is herein described from six specimens from Batanta and Batu Hitam in the Raja Ampat Islands, West Papua, Indonesia. It is distinguished from other members of the complex in live coloration, and in having higher mean numbers of scales in lateral series and of anterior lateral-line scales (36–38 and 29–32, respectively), and a deeper body as measured from the dorsal-fin origin to pelvic-fin origin (31.8–33.5 % SL).
Keywords: Pisces, taxonomy, Pseudochromis reticulatus complex, Raja Ampat Islands
Pseudochromis stellatus, Batu Hitam, Raja Ampat Islands, Indonesia.
Photo by M.V. Erdmann.
Pseudochromis stellatus sp. nov.
Greenhead Dottyback
Diagnosis. A species of Pseudochromis with the following combination of characters: dorsal-fin rays III,24– 26 (usually III,26); anal-fin rays III,15; pectoral-fin rays 18–19, usually 18; scales in lateral series 36–38; circumpeduncular scales 16; caudal fin pointed (rounded with middle rays extended to form slight to obvious point); and dorsal-fin origin to pelvic-fin origin 31.8–33.5 % SL.
Etymology. The specific epithet is from the Latin, meaning starry or starred, and alludes to the yellow spots on the upper part of the body. The name was selected by high school students as part of a science activity in the Macleay Museum.
Habitat and distribution. Pseudochromis stellatus is known from Batanta and Batu Hitam in the northern Raja Ampat Islands of West Papua Province, Indonesia, where it has been collected in 55–62 m and observed to at least 70 m depth. The new species is found on deep reef slopes with gentle incline but exposed to strong currents, and is generally found in association with small gorgonian sea fans or low-growing barrel sponges. It is most likely more widely distributed in the region, but confusion with similar yellow-spotted pseudochromids makes underwater identification difficult (see Comparisons). The species possibly ranges to Cebu, Philippines (see Remarks).
Anthony C. Gill, Gerald R. Allen & Mark V. Erdmann. 2017. Pseudochromis stellatus, A New Species of Dottyback from Indonesia (Teleostei: Pseudochromidae). Zootaxa. 4338(2); 333–340. DOI: 10.11646/zootaxa.4338.2.7
كيف تحصل على مدونة جاهزة بآلاف المواضيع والمشاركات من هنا
شاهد قناة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على اليوتيوب لمزيد من الشرح من هنا
رابط مدونة منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات في أي وقت حــــتى لو تم حذفها من هنا شاهد صفحة منتدى مدونات بلوجر جاهزة بألاف المواضيع والمشاركات على الفيس بوك لمزيد من الشرح من هنا
تعرف على ترتيب مواضيع منتدى مدونات بلوجر جاهزة بآلاف المواضيع والمشاركات (حتى لا تختلط عليك الامور) من هنا
ملاحظة هامة: كل عمليات تنزيل، رفع، وتعديل المواضيع الجاهزة تتم بطريقة آلية، ونعتذر عن اي موضوع مخالف او مخل بالحياء مرفوع بالمدونات الجاهزة بآلاف المواضيع والمشاركات، ولكم ان تقوموا بحذف هذه المواضيع والمشاركات والطريقة بسيطة وسهلة. ــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــــسلامـ.
