Six new species of the genus Trimma (Percomorpha; Gobiidae) from the Raja Ampat Islands, Indonesia, with notes on cephalic sensory papillae nomenclature
aqua, International Journal of Ichthyology, pp. 127-162, Volume 17, Issue 3 10 July 2011
Recent (2010) fieldwork in the Raja Ampat Islands of Indonesia resulted in the collection of seven undescribed species of Trimma, six of which are described here. Two of these are currently only known from these islands, the others are known from other parts of the western Pacific. Trimma cheni n. sp. is distinguished from other species of Trimma in having 8-9 scales in the predorsal midline, 2-3 scales on the opercle, an elongate second dorsal spine reaching posteriorly to the bases of rays 1-4 of the second dorsal fin, middle pectoral fin rays branched, fifth pelvic fin ray branched once, a dark basal stripe in the dorsal fins, scale pockets indistinctly outlined with darker pigment, and, in life, two red to orange bars across the cheek and three diffuse yellow stripes on the body (most obvious along the caudal peduncle). It has been recorded from Palau, the Philippines, and Sulawesi and Flores in Indonesia. Trimma erdmanni n. sp. has a reddish-orange body with a dark red lateral stripe with darker borders on the body which extends anteriorly onto the head, where it bifurcates, and there is a thin longitudinal light stripe below the eye. It usually lacks scales in the predorsal midline, the second spine of the first dorsal is elongated, there are 9 dorsal and 8 anal rays, a single branch in the fifth pelvic fin ray, and 19-22 gill rakers on the first gill arch. The species is known from the Raja Ampat islands, the Hermit Islands and Madang (Papua New Guinea), and from photographs from El Nido, Palawan Island and Davao Gulf, Mindanoro, Philippines. Trimma habrum n. sp. has a bony interorbital width equal to the pupil diameter, 8-9 scales in the predorsal midline, 14 unbranched pectoral fin rays, an unbranched fifth pelvic fin ray, no basal membrane joining the fifth pelvic fin rays across the midline, usually a single full row of cheek scales, and scales on the upper two-thirds of the opercle. The fresh colouration is diagnostic: a pale translucent dorsum with light yellow blotches and the base of each element of the dorsal fin surrounded by a red spot, a thin red bar along the posterior margins of the hypurals, no dark pigment at all on the hypural region of the peduncle, and a darkly pigmented covering to the dorsal margins of the swim bladder, neural sheath, and the brain. It is currently known only from a single collection made at Kerou Island, Fam Islands in Raja Ampat, Indonesia. Trimma haimassum n. sp. is characterized by a relatively deep body, numerous irregular scales with about 30 lateral rows and over 15 scales in the anterior transverse series, a fifth pelvic fin ray that branches twice dichotomously, usually a somewhat elongate second dorsal spine, no predorsal, cheek or opercular scales, a moderately wide bony interorbital with a fleshy median ridge between the eyes, and a dermal ridge anterior to the first dorsal spine. There is a red spot or elongate blotch above the opercle in live and fresh material, and the dorsal surface of the snout has a reticulated dark pattern, with dark transverse stripes over the dorsal margin of the orbit. The species is known from south-western Sulawesi north to Palawan and eastwards to the Solomon Islands. Trimma papayum n. sp. is unique among the described species of the genus in having a one-third pupil diameter black ocellated spot on and just behind the fourth dorsal fin spine. It has 9 dorsal and 8 anal fin rays, a single branch point in the fifth pelvic fin ray, 10-11 anterior and 8-9 posterior transverse scale rows, 5-10 scales in the predorsal midline, and a single row of 3 scales on the upper margin of the opercle. Freshly collected specimens are orange red in overall colouration, with scattered diffuse yellow spots. The species is known only from Indonesia, at Maumere, Flores and Kawe Island, Raja Ampat. Trimma xanthochrum n. sp. is characterized by a wide interorbital region (80-100% pupil diameter), a second dorsal spine usually reaching posteriorly to between the bases of the second to third dorsal fin rays, 15-16 pectoral rays usually with 7-8 branched rays, vertical rows of sensory papillae below eye of 2-3 papillae in rows 1-4 and 4-5 in row 5, a caudal blotch which has a lower half about two-thirds the width of the upper half, and usually an overall yellowish body with yellow at least proximally in the caudal fin. It is currently known with certainty only from the Raja Ampat islands.
AHNELT, H. & BOHACEK, V. 2004. The lateral system of two sympatric eastern Pacific gobiid fishes of the genus Lythrypnus (Teleostei: Gobiidae). Bulletin of Marine Science 74 (4): 31-51.
AHNELT, H. & GÖSCHEL, J. 2003. Morphological differences between the eastern Pacific gobiid fishes Quietula guaymasiae and Quietula y-cauda (Teleostei: Gobiidae) with emphasis on the topography of the lateral-line system. Cybium 27 (3): 185-197.
AKIHITO, P., HAYASHI , M. & YOSHINO, T. 1988. Suborder Gobioidei. In: The Fishes of the Japanese Archipelago. (Eds. Masuda, H., Amaoka, K., Araga, C., Uyeno, T. & Yoshino, T.). 2nd Edition. Tokai University Press, Tokyo, pp. 236-289.
AKIHITO, SAKAMOTU, K., IWATA, A., AND IKEDA, Y. 1993. Cephalic sensory organs of the gobioid fishes. In: Fishes of Japan with pictorial keys to the species. (Ed. T. Nakabo). Tokai Univ. Press, Tokyo, Japan [In Japanese], pp 1088-1116.
AKIHITO, SAKAMOTO, K., IKEDA, Y., & SUGIYAMA, K. 2002. Gobioidei. In: Fishes of Japan with pictorial keys to the species. (Ed. T. Nakabo). English edition, Vol. II, Tokai University Press, Tokyo, pp 1139-1310; 1596-1619.
ALLEN, G. R. & ERDMANN, M. V. 2009. Reef fishes of the Bird’s Head Peninsula, West Papua, Indonesia. Check List 5 (3): 587-628.
ALLEN, G., STEENE, R., HUMANN, P., & DELOACH, N. 2003. Reef Fish Identification. Tropical Pacific. New World Publications Ltd., Florida. 457 pp.
AOYAGI, H. 1949. Studies on the coral reef fishes of the Riu- Kiu Islands. V. The Zooological Magazine, The Zoological Society of Japan (Tokyo) 58 (9): 171-173.
ASAOKA, R., NAKAE, M. & SASAKI, K. 2011. Description and innervations of the lateral line system in two gobioids, Odontobutis obscura and Pterogobius elapoides (Teleostei: Perciformes). Ichthyological Research 58: 51-61.
AURICH, H.J. 1938. Mitteilung XXVIII der Wallacea-Expedition Woltereck. Die Gobiiden. (Ordnung : Gobioidea). Internationale Revue der gesamten Hydrobiologie und Hydrographie, 38 (1/2) :125-183.
COHEN, D. M. & DAVIS, W. P. 1969. Vertical orientation in a new gobioid fish from New Britain. Pacific Science 23 (3): 317-324.
DIMARA, R., FAUZAN, A., LAZUARDI, M., PADA, D., ALLEN, G. R., ERDMANN, M. V., HUFFARD, C. L., KATZ, L. S. & WINTERBOTTOM, R. 2010. An illustrated list of additions to the goby fauna of the Raja Ampat Islands, Indonesia (Pisces, Gobiidae). Check List 6 (4): 619-625.
GOREN, M. 1978. A new gobiid genus and seven new species from Sinai coasts. Senckenbergiana biologica 59 (3/4): 191-203.
GOREN, M. 1981. Three new species and three new records of gobies from New Caledonia. Cybium, 3e ser. 5 (3): 93-101.
GOREN, M. 1982. Quisquilius flavicaudatus, a new gobioid fish from the coral reefs of the Red Sea. Zoologische Mededelingen 56 (11): 139-142.
HAGIWARA, K. & WINTERBOTTOM, R. 2007. Two new species of Trimma (Gobiidae) from the western Pacific. Bulletin of National Science Museum, Ser. A, Supplement 1: 163-174.
HAYASHI, M. & SHIRATORI, T. 2003. Gobies of Japanese waters. Hankyu Books, Osaka, Japan (in Japanese). HERRE, A. W. C. T. 1945. Notes on fishes in the Zoological Museum of Stanford University. XIX. — Two new Philippine gobies, with key to the genera of gobies with vomerine teeth. Proceedings of the Biological Society of Washington 58: 77-82.
HOESE, D. F. 1983. Sensory papillae patterns of the cheek lateralis system in the gobiid fishes Acentrogobius and Glossogobius, and their significance for the classification of gobioid fishes. Records of the Australian Museum 35: 223-229.
HOESE, D. F., WINTERBOTTOM, R. & READER, S. 2011. Trimma maiandros, a new species of pygmy goby (Gobiidae) from the Indo-West Pacific. aqua, International Journal of Ichthyology 17 (2): 145-152.
JORDAN, D. S. & SEALE, A. 1906. The fishes of Samoa. Description of the species found in the archipelago, with a provisional check-list of the fishes of Oceania. Bulletin of the Bureau of Fisheries 25 (for 1905): 173-455.
KIMURA, S. & MATSUURA, K. 2003. Fishes of Bitung, Northern Tip of Sulawesi, Indonesia. Ocean Research Institute, University of Tokyo. vi + 244 pp.
KOLOMBATOVIC, G. 1891. Glamo i (Gobii) spljetskog pomorskog okruzja u Dalmaciji. [Gobii della Dalmazia.] Spalato: 3-29.
KUITER, R. H. & TONOZUKA, T. 2004. Pictorial Guide to: Indonesian Reef Fishes. Part 3. PT Dive & Dive’s, Bali, Indonesia. iv + 623-893.
MILLER, P. J. 1972a. Generic status and redescription of the Mediterranean fish Gobius lichtensteini Kolombatovic, 1891 (Teleostei: Gobioidea), and its affinities with certain American and Indo-Pacific gobies. Journal of Natural History 6: 395-407.
MILLER, P. J. 1972b. The identity of Gobius affinis Kolombatovic, with notes on the systematics and biology of Pomatoschistus pictus (Malm) (Pices: Gobiidae). Annali Del Museo Di Storia Naturale Di Genova 79:53-88.
MILLER, P. J. 1973 The identity of Gobius affinis Kolombatovic, with notes on the systematics and biology of Pomatoschistus pictus (Malm) (Pisces: Gobiidae). Annali del Museo Civico di Storia Naturale `Giacomo Doria’ 79 (for 1 Sept 1972): 53-88.
MILLER, P. J. & WONGRAT, P. 1979. A new goby (Teleotei: Gobiidae) from the South China Sea and its significance for gobioid classification. Zoological Journal of the Linnean Society 67: 239-257.
SANZO, L. 1911. Distribuzioine delle papille cutanee (organi ciatiformi) e suo valore sistematico nei Gobi. Mitteilungen aus der Zoologische Station zu Neapel 20 (2): 251-328.
SMITH, J.L.B. 1957. The fishes of Aldabra. Part VI. Annals and Magazine of Natural History, Series 12 9:817-829.
SUZUKI, T. & Senou, H. 2007. Two new species of the gobiid fish genus Trimma (Perciformes: Gobioidei) from southern Japan. Bulletin of the National Museum of Natural Science, Ser. A, Suppl. 1: 175–184.
SUZUKI, T. & SENOU, H. 2008. Two new species of the gobiid fish genus Trimma (Perciformes: Gobioidei) from southern Japan. Bulletin of the National Museum of Natural Science, Ser. A, Suppl. 2: 97-106.
SUZUKI, T. & SENOU, H. 2009.Two new species of the genus Trimma (Perciformes: Gobioidei) from Japan and Palau. Bulletin of the Kanagawa Prefectual Museum (Natural Science) (38): 107-112.
TAKAGI, K. 1988. Cephalic sensory canal system of the gobioid fishes of Japan: comparative morphology with special reference to phylogenetic significance. Journal of the Tokyo University of Fisheries 75 (2): 499-568.
WHITLEY, G. P. 1959. Ichthyological snippets. The Australian Zoologist 12 (4) :310-323.
WINTERBOTTOM, R. 1984. A review of the gobiid fish genus Trimma from the Chagos Archipelago, Central Indian Ocean, with the description of seven new species. Canadian Journal of Zoology 62: 695-715.
WINTERBOTTOM, R. 1995. Red Sea gobiid fishes of the genus Trimma, with the description of two new species. Revue francaise d’Aquariologie 22: 93-98.
WINTERBOTTOM, R. 1996. A new species of gobiid fish, Trimma benjamini, from the western Pacific. Revue Française d’Aquariologie 23: 57-60.
WINTERBOTTOM, R. 2000. Four new species of Trimma (Gobiidae), from the Indian and western Pacific oceans. aqua, Journal of Ichthyology and Aquatic Biology 4 (2): 57- 66.
WINTERBOTTOM, R. 2002. Two new species of Trimma (Gobiidae) from the central, western, and south Pacific. aqua, Journal of Ichthyology and Aquatic Biology 5 (2): 45- 52.
WINTERBOTTOM, R. 2003. A new species of the gobiid fish Trimma from the Western Pacific and Northern Indian Ocean coral reefs, with a description of its osteology. Zootaxa 218: 1-24.
WINTERBOTTOM, R. 2004. Three new species of Trimma (Pisces; Gobiidae) from the central, western and south Pacific. aqua, Journal of Ichthyology and Aquatic Biology 9 (1): 7-16.
WINTERBOTTOM, R. 2005. Two new species of the Trimma tevegae species group from the western Pacific (Percomorpha; Gobiidae). aqua, Journal of Ichthyology and Aquatic Biology 10 (1): 51-56.
WINTERBOTTOM, R. 2006. Two new species of the gobiid fish Trimma from the coral reefs of the western Pacific Ocean (Pisces; Perciformes; Gobioidei). Zootaxa 1331: 55-68.
WINTERBOTTOM, R. & BURRIDGE. M. 1992. A revision of Egglestonichthys and the species of Priolepis possessing a transverse cheek papillae pattern (Teleostei; Gobiidae); with a discussion of relationships. Canadian Journal of Zoology 70: 1934-1946.
WINTERBOTTOM, R. & Villa, C. A. 2003. A new species of the Trimma caesiura complex (Gobiidae, Teleostei) from the north-eastern margin of the Australian Plate, with a redescription of the other nominal species in the complex. aqua, Journal of Ichthyology and Aquatic Biology 7 (1): 13-28.
WINTERBOTTOM, R. & ZUR, M. 2007. Three new species of genus Trimma from Palau, Western Pacific (Percomorpha; Gobiidae). aqua, International Journal of Ichthyology 13 (1): 13-24.
YOSHINO, T. & ARAGA, C. 1975. p. 272. In: Masuda, H., Araga, C. & Yoshino, T. (eds) 1975. Coastal Fishes of Southern Japan. Tokai University Press, Tokyo. 382 pp.