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Lentipes multiradiatus, a new species of freshwater goby (Gobiidae) from Irian Jaya, Indonesia
| Content Provider | Semantic Scholar |
|---|---|
| Author | Allen, Gerald R. |
| Copyright Year | 2001 |
| Abstract | A new species of freshwater gobiid, Lentipes multiradiatus, is described on the basis of a single male specimen, 27.4 mm SL, collected from the Cyclops coast, near Jayapura, Irian Jaya Province, Indonesia. The species is characterised by a combination of features that include: dorsal rays VI-I,10; anal rays I,10; pectoral rays 20; first dorsal fin connected basally to second dorsal fin; four oculoscapular sensory pores; and the absence of both bilobed urogenital structures and a sac of replacement teeth on the upper jaw. It is the only species of Lentipes, except for L. watsoni from southern Papua New Guinea, in which males possess a small black spot at the beginning of the second dorsal fin. Zusammenfassung Eine neue Süßwassergrundel Spezies, Lentipes multiradiatus, wird an Hand von einem einzigen männlichen Exemplar beschrieben, 27.4 mm SL, gefunden an der Cyclops Küste nahe Jayapura, Provinz Irian Jaya, Indonesien. Die Art weist folgende charakteristische Merkmale auf:RückenstrahlenVI-I, 10;Afterstrahlen I, 10; Bruststrahlen 20; Erste Rückenflosse an der Basis mit zweiter Rückenflosse verbunden; vier oculoscapulare Sinnesporen; keine der beiden zweilappigen urogenitalen Strukturen vorhanden; viele Ersatzzähne im oberen Kiefer. Es handelt sich hier um die einzige Spezies der Lentipes außer L. watsoni vom Süden Papua Neuguineas -, bei dem das Männchen einen kleinen, schwarzen Punkt am Ansatz der zweiten Rückenflosse hat. Résumé Une nouvelle espèce de gobie dulçaquicole, Lentipes multiradiatus, est décrite d’après un unique mâle de 27,4 mm LS récolté sur la Cyclops Coast près de Jayapura, Irian Jaya, Indonésie.Elle est caractérisée par une combinaison de caractères incluant: VI-I, 10 rayons dorsaux; I, 10 rayons anaux; 20 rayons pectoraux; la première nageoire dorsale reliée à la base à la seconde; quatre pores sensoriels oculoscapulaires; et l’absence de structures urogénitales bilobées et d’une poche de dents de remplacement à la mâchoire supérieure. C’est aussi la seule espèce de Lentipes, à l’exceptions de L. watsoni du sud de la Papouasie-Nouvelle-Guinée, où les mâles ont une petite tache au début de la seconde nageoire dorsale. Sommario Una nuova specie di gobide d’acqua dolce, Lentipes multiradiatus, viene descritta sulla base di un solo esemplare maschio, 27.4 mm SL, raccolto sulla costa dei Ciclopi, vicino a Jayapura, nella provincia di Irian Jaya in Indonesia. La specie si caratterizza per la combinazione di caratteristiche particolari: raggi dorsali VII,10; raggi anali I,10; raggi pettorali 20; prima pinna dorsale connessa alla base alla seconda pinna dorsale; quattro pori sensoriali oculoscapolari, assenza di entrambe le strutture urogenitali bilobate e una sacca di ricambio della dentatura nella mascella superiore. È l’unica specie di Lentipes, tranne il L. watsoni della zona meridionale di Papua Nuova Guinea, nella quale i maschi possiedono una piccola macchia nera all’inizio della seconda pinna dorsale. Introduction The present paper describes a new species of gobiid fish belonging to the genus Lentipes Günther, collected during a Conservation International faunal survey and training course near the village of Yongsu on the Cyclops coast of Irian Jaya Province, northern New Guinea. The collection site is located approximately 30 km west of Jayapura, where the spectacular Cyclops Mountains plunge steeply to the edge of the sea. The area is punctuated by numerous swift-flowing, steepgradient, rocky streams that rise in the nearby mountains. The fish fauna in these streams is typically dominated by sicydiine gobies, which frequently comprise 50% or more of the fishes at a particular site. These small bottom-dwellers possess a well-developed pelvic “sucker” used for attachment to rocky substrates in fastflowing streams.Most species occur in creeks and rivers flowing through hilly terrain within 20-30 km of the sea. Lentipes contains eight freshwater species, which, with the exception of a single west African species, are known from scattered localities in the tropical central and western Pacific including the Marquesas, Hawaiian Islands, southern Japan, the Indonesian island of Bali, and New Guinea. Materials and Methods The methods of counting and measuring are as folaqua vol. 4 no. 3 2001 121 aqua, Journal of Ichthyology and Aquatic Biology Lentipes multiradiatus, a New Species of Freshwater Goby (Gobiidae) from Irian Jaya, Indonesia |
| Starting Page | 121 |
| Ending Page | 124 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| Volume Number | 43 |
| Alternate Webpage(s) | http://aqua-aquapress.com/pdf/aqua4(3)_Lentipes.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
