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NEW RECORDS OF
TWELVE SPECIES OF CRUSTACEANS ALONG THE PACIFIC COAST OF MEXICO
Trabajo
recibido el 20 de octubre de 1981 y aceptado para su publicación el 13
de abril de 1982.
MICHEL E. HENDRICKX
Universidad Nacional
Autónoma de México, Instituto de Ciencias del Mar y
Limnología, Estación Mazatlán. Mazatlán, Sinaloa,
México.
ALBERT M. VAN DER HEIDEN
Universidad Nacional Autónoma de
México, Instituto de Ciencias del Mar y Limnología,
Estación Mazatlán. Mazatlán, Sinaloa, México.
Contribución 249 del Instituto de Ciencias del Mar y Limnología,
UNAM.
Nuevas distribuciones para 12
especies de crustáceos marinos son reportadas para la costa
Pacífica de México incluyendo dos especies de Isopoda, dos
especies de Anomura y ocho especies de Brachyura.
Range
extensions along the Pacific coast of Mexico are reported for two species of
Isopoda, two species of Anomura and eight species of Brachyura.
From 1978 to 1981 a large number of Crustacea were obtained from sampling acitivities in the southern part of the Gulf of California, México. The present paper reports range extensions for two species of Isopoda, two species of Anomura and eight species of Brachyura along the coast of continental México. In several cases, the new records refer to species that have been found for the first time on the mainland side of the Gulf of California but that had been previously reported for the southern tip of the Penin sula of Baja California (Cabo San Lucas area). Although sometimes they represent reduced range extensions, these records have been considered significant for two main reasons: 1) rocky shores are considerably scarce in the southeastern part of the Gulf of California and informations regarding the composition of the rocky intertidal communities are almost inexistent; 2) the paucity of distribution records for the area concerned makes it difficult to understand the general pattern of distribution of brachyuran crabs in the southern Gulf of California. RESULTS AND DISCUSSION
ISOPODA
Family Anthuridae
Califanthura squamosissima (Menzies, 1951)Previous distribution: Northern Gulf of California, México, and southern California, U.S.A. (Brusca, 1980). New record: Bahía de Mazatlán, Sinaloa, México, in the southern Gulf of California. Two specimens collected by a diving party on sandy bottom. Depth: about 3 m (July 1979). Cortezura penascoensis Schultz, 1977Previous distribution: Northern Gulf of California (Brusca, 1980). New record: Bahía de Mazatlán, Sinaloa, México, in the southern Gulf of California. Occurring throughout the Bay. A series of 7 specimens collected with a Van Veen grab on sandy bottom (fine sand). Depth: 6 to 14 m (March and june 1979). DECAPODA
Infraorder AnomuraFamily Porcellanidae Polyonyx quadriungulatus Glassell, 1935Previous distribution: California mainland at Mission Bay (Knight, 1966). Off the coast of California (Santa Rosa, Santa Cruz and Santa Catalina Islands), U.S.A., and from Estero de Punta Banda to Punta San Eugenio, Baja California, México (Haig, 1960); Puerto Peñasco, Sonora and Loreto, Baja California Sur, México (Kudenov and Haig, 1974). New record: Bahia de Mazatlán, Sinaloa, México. A single specimen dredged from 11 m on sandy bottom (find sand). No host recorded (January 1980). Petrolisthes lewisi austrinus Haig, 1960Previous distribution: Bahía de Salinas, Costa Rica, south to Punta Santa Elena, Ecuador. New record: Bahía de Mazatlán, Sinaloa, México. Four specimens from the rocky intertidal (February and April, 1980) including two ovigerous females (April). The discovery of specimens of Petrolisthes lewisi austrinus in the area of Mazatlán seems to be in contradiction with the fact that this locality is included in the currently accepted distribution range of P. lewisi lewisi (Glassell, 1936), i.e. from Isla del Carmen in the Gulf of California south to Bahía de Tequepa, Guerrero, and Isla Isabel and Islas Tres Marías, Nayarit, México (Haig, 1960). Further morphological studies are necessary, however, in order to decide whether or not two subspecies of P. lewisi should still be considered. Infraorder BrachyuraFamily Xanthidae Platypodiella rotundata (Stimpson, 1860)Previous distribution: Bahía Escondido to Cabo San Lucas, Baja California Sur México (Garth, 1946); on the mainland, from Manzanillo, Colima, south to Punta Santa Elena, Ecuador (Rathban, 1930; Garth, 1946); questionable from the Islas Galápagos (Finnegan, 1931; Garth, 1946). New record: From the rocky intertidal of Bahia de Mazatlán, Sinaloa, México, among Palythoa, a colonial zoanthid and in dead barnacles. Trapezia ferruginea Latreille, 1825Previous distribution: From Arena Bank, Gulf of California, México, to Islas Gorgonas, Colombia; Isla Clarion; Islas Galápagos; Red Sea and Indo Pacific Ocean (Rathbun, 1930; Garth, 1946; Brusca, 1980). Northernmost mainland record at Bahia Zihuatanejo, Guerrero, México (Crane, 1947). New record: Rincón de Guayabitos (Punta Raza), Nayarit, México; one ovigerous female in living coral head captured together with specimens of Alpheus lottini Guerin (January 1980). Quadrella nitida Smith, 1869Previous distribution: From Arena Bank, Gulf of California, south to Cabo San Lucas, Baja California Sur, México; South to Panamá and the Islas Galápagos (Crane, 1937; Garth, 1946). New records: Bahía de Ceuta, Sinaloa, México. One female dredged from 48 m (December, 1980) and three males plus one female dredged from 56 m (April, 1980); all of them on gorgonians collected in the shrimp by-catch of fishing vessels operating from Mazatlán. In addition, a total of 202 specimens (including 90 males and 112 females of which 19 were ovigerous) were collected off Punta Piaxtla, Sinaloa. This large series of specimens was found on a total of 420 colonies of gorgonians attached to stones and dead shells that were dredged up from 70 m (April 1981). Heteractaea lunata (H. Milne Edwards and Lucas, 1843)Previous distribution: From San Diego, California, U.S.A., south to Valparaíso, Chile (Garth, 1948); from Puerto Escondido southward on the peninsular side of the Gulf of California (Lockington, 1877); Islas Isabel and María Madre, Nayarit (Rathbun, 1930); Garth, 1960), and Acapulco, Guerrero (Crane, 1947), México, represent the northernmost records on the continental side and mainland. New Record: Isla Pájaros and Lobos, Bahía de Mazatlán, Sinaloa, México. Two males collected on submerged rocks (May and june 1980). Family Goneplacidae
Oediplax granulata Rathbun, 1893Previous distribution: Endemic to the Gulf of California; southernmost record on mainland is at Punta Piaxtla, Sinaloa, México (Garth, 1960). New Records: Off Tres Islas (depth of 24 m), Bahía de Mazatlán, and off Mazatlán (depth of 22 m), Sinaloa, México. A total of four males and one female in shrimp boat by-catch (March and May 1980). Another male collected off Teacapan by a shrimp boat (February 1979). Family Grapsidae
Plagusia depressa tuberculata Lamarck, 1818Previous distribution: Cabo San Lucas, Baja California, Sur, México; Indo-Pacific from the Hawaiian Islands westward and southward to japan and the Arabian Sea (Rathbun, 1918; Garth, 1965). Also reported from Clipperton Island (Garth, 1965). New records: Rocky intertidal, Mazatlán, Sinaloa, México. Two ovigerous females taken at the foot of the Cerro del Vigía, between Punta Pala and Punta Derecha (December 1978 and 1979). Two adult males collected at Playa Delfín (November 1979 and January 1980). The Allan Hancock Foundation has a specimen from San Lorenzo Rocks, Acapulco, Guerrero, México (Velero IV Station 2591-54; M. K. Wicksten, pers. comm.). Family Majidae
Pelia pacifica A. Milne Edwards, 1875Previous distribution: From Manzanillo Colima, México, south to Zorritos, Perú (Garth, 1959). New record: Rocky intertidal, Isla Pájaros, Bahía de Mazatlán, Sinaloa, México (July 1979). A single male. Maiopsis panamensis Faxon, 1893 Previous distribution: From Punta Abreojos, south to Bahía Magdalena, Baja California, México. Other records in literature include Bay of Panamá; Manta, Ecuador; Isla Clarión, México; Paita and Caleta la Cruz, Tumbes, Perú (Wicksten, 1979). Not reported from the Gulf of California. New record: Bahía de Mazatlán, Sinaloa, México. Three males caught in lobster traps off Islas Dos Hermanos (February 1981). Although the size of the specimens collected in the Bay of Mazatlán does not reach the record size reported by Wicksten (1979) for the largest of the crabs obtained from the Baja California western coast (a male specimen of 240 mm carapace width and 240 mm carapace length), the Mazatlán record makes of Maiopsis panamensis the largest brachyuran crab ever collected in the Gulf of California (a male specimen of 171 mm carapace width and 169 mm carapace length). AgradecimientosACKNOWLEDGEMENTSWe would like to thank the staff of the Crustacean Section of the Allan Hancock Foundation for help provided during the preparation of this note. Special thanks are due to M. K. Wicksten, Texas A & M University. LITERATURABRUSCA, R. C. Common intertidal invertebrates of the Gulf of California. Univ. Arizona Press. 2nd (revised) edition. Tucson, Arizona 1980 520 p. CRANE, J. The Templeton Crocker Expedition. III. Brachygnathous crabs from the Gulf of California and the west coast of lower California. Zoologica 1937 47-78 22 (3) ---, Eastern Pacific Expeditions of the New York Zoological Society. XXXVIII. intertidal brachygnathous crabs from the west coast of tropical America with special reference to ecology. Zoologica 1947 69-95 32 (9) FINNEGAN, S. Report on the Brachyura collected in Central America, the Gorgona and Galapagos Islands, by Dr. Crossland on the "St. George" Expedition to the Pacific, 1924-1925. Zool. J. 1931 607-673 37 GARTH, J. S. Littoral brachyuran fauna of the Galapagos Archipelago. Allan Hancock Pacific Exped. 1916 341-602 5 (10) ---, The Brachyura of the Askoy Expedition with remarks on carcinological collecting in the Panama Bight. Bull. Amer. Mus. Nat. Hist. 1948 1-66 92 (1) ---, Eastern Pacific Expeditions of the New York Zoological Society. XLIV. Non-intertidal brachygnathous crabs from the west coast of tropical America. Part 1: Brachygnatha Oxyrhyncha. Zoologica 1959 105-126 44 (7) ---, Distribution and affinities of the brachyuran Crustacea. In: The biogeography of Baja California and adjacent seas. Part II. Marine Biotas. Systematic Zool. 1960 105-123 9 (3) --, The brachyuran decapod crustaceans of Clipperton Island. Proc. Calif. Acad. Sci. 1965 1-46 33 (1) HAIG, J. The Porcellanidae (Crustacea Anomura) of the Eastern Pacific. Allan Hancock Pacific Exped. 1960 1-440 24 KNIGHT, M. D. The larval development of Polyonyx quadriungulatus Glassell and Pachycheles rudis Stimpson (Decapoda, Porcellanidae) cultured in the laboratory. Crustaceana 1966 75-97 10 (1) KUDENOV, J. D. J. HAIG A range extension of Polyonyx quadriungulatius Glassell, 1935, into the Gulf of California (Decapoda, Anomura, Porcellanidae). Crustaceana 1974 105-106 26 (1) LOCKINGTON, W. N. Remarks on the Crustacea of the west coast of North America, with a catalogue of the species in the Museum of the California Academy of Sciences. Cancroidea. Proc. Calif. Acad. Sci. 1877 94-108 7 RATHBUN, M. J. The grapsoid crabs of America. Bull. U.S. Nat. Mus. 1918 14-61 97 ---, The cancroid crabs of America. Bull. U.S. Nat. Mus. 1930 1609 152 WICKSTEN, M. K. Range, size and feeding of Maiopsis panamensis Faxon (Brachyura: Majidae). Bull. Mar. Sci. 1979 598-599 29 (4)
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