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Haustorius Jayneae, a New Species of Haustoriid Amphipod from the Northern Gulf of Mexico, with Notes on Its Ecology at Panama City Beach, Florida U.S.A

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Haustorius Jayneae, a New Species of Haustoriid Amphipod from the Northern Gulf of Mexico, with Notes on Its Ecology at Panama City Beach, Florida U.S.A View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Aquila Digital Community Gulf Research Reports Volume 8 | Issue 3 January 1991 Haustorius jayneae, a New Species of Haustoriid Amphipod from the Northern Gulf of Mexico, with Notes on Its Ecology at Panama City Beach, Florida U.S.A. John M. Foster Sara E. LeCroy Gulf Coast Research Laboratory, [email protected] DOI: 10.18785/grr.0803.06 Follow this and additional works at: http://aquila.usm.edu/gcr Part of the Marine Biology Commons Recommended Citation Foster, J. M. and S. E. LeCroy. 1991. Haustorius jayneae, a New Species of Haustoriid Amphipod from the Northern Gulf of Mexico, with Notes on Its Ecology at Panama City Beach, Florida U.S.A.. Gulf Research Reports 8 (3): 259-270. Retrieved from http://aquila.usm.edu/gcr/vol8/iss3/6 This Article is brought to you for free and open access by The Aquila Digital Community. It has been accepted for inclusion in Gulf and Caribbean Research by an authorized editor of The Aquila Digital Community. For more information, please contact [email protected]. Gulf Research Reports, Vol. 8, No. 3, 259-210, 1991 HAUSTORZUS JAYNEAE, A NEW SPECIES OF HAUSTORIID AMPHIPOD FROM THE NORTHERN GULF OF MEXICO, WITH NOTES ON ITS ECOLOGY AT PANAMA CITY BEACH, FLORIDA U.S.A. JOHN M. FOSTER' AND SARA E. LECROY' '504 East Pine Forest Drive, Lynn Haven, Florida 32444 21nvevtebrate Zoology Section, Gurf Coast Research Laboratory, P.O. Box 7000, Ocean Springs, Mississippi 39564 ABSTRACT A new species of sand-burrowing amphipod, H~ustoviusjayneae, is described from the swash zone and shallow subtidal sands along the north Floiida and Mississippi Gulf coasts. It is most similar to H. canadensis from the American Atlantic coast, differing primarily in the presence of a distinct anterodistal spinous lobe on pereopod 6, article 5; a longer row of distal marginal spines on pereopod 7, article 4; and fewer proximal spines on the peduncle of uropod 1. A revised key to the known species of Haustorius is included and information on the ecology of H. jayneae n. sp. at Panama City Beach, Florida, is reviewed. INTRODUCTION Five additional haustoriid species originally assigned Taxonomic and zoogeographic studies of Gulf of to the genus Huustorius have since been placed in other Mexico Haustoriidae are scarce. A lack of keys for Gulf genera. These include the Gulf of Mexico species material, a reflection of the underdeveloped state of Pseudohaustorius americunus (Pearse, 1908) and the knowledge about the family in the region, has limited North Atlantic species Acunthohaustorius spinosur workers to the use of keys and guides written primarily (Bousfield, 1962), both removed from Huustorius by for Atlantic coast material. As a result, govemment and Bousfield (1965). In addition, the northem Pacific private environmental assessment reports often provide species Eohuuston'us wushingtoniunus (Thorsteinson, species lists in which citations are limited to genera, or 1941), E. eous (Gurjanova, 1951), and E. cheliferous where species are listed which do not occur in the Gulf (Bulycheva, 1952) were removed from Huustorius by of Mexico. Bamard (1957). Existing knowledge of the Gulf Haustoriidae is re- A number of undescribed haustoriid species are known ported primarily in papers which describe new species to occur in the Gulf of Mexico. Bousfield (1970) (Pearse, 1908; Robertson and Shelton, 1978; Robertson indicated that at least ten undescribed species of Haus- and Shelton, 1980; Thomas and Bamard, 1984; Foster, toriidae occur in the region, although the number of 1989) and in several ecological papers which have species in the type genus was not reported. In addition, reported undescribed species and recognized them as recent studies have resulted in the reporting of a "long- such (Thomas, 1976; Shelton and Robertson, 1981). rostrate" Huuston'us species from North Carolina Foster (1989) reviewed the history of haustoriid studies (Bousfield, 1965; Fox and Bynum, 1975). Although no in the Gulf and listed the known species. formal description was published, this form is included Among the numerous taxonomic problems associated in the key provided in paper. with the Haustoriidae, questions concerning the this type Ecological reports with reference to Huustorius in the genus Huustorius Muller, 1775 are particularly signifi- northern Gulf of Mexico are numerous. For example, in cant. Three species are currently recognized in the genus. the area between Cape San Blas, in the Florida Pan- The type species, Huustorius urenurius (Slabber, 17691, handle, and Mississippi Sound, the genus has been is distributed in the northeastem Atlantic and has also reported by Saloman (1976), Saloman and Naughton been reported from the Gulf of Mexico (Pearse, 1912), (1977;1978), Saloman et al. (1982), Taylor (1987), and although Croker (1967) considered such early records to Heard and Stuck (1988). Thomas (1976) also reported be the result of erroneous identifications. The remaining undescribed species of Huustorius from Barataria two species, Huustorius canadensis Bousfield, 1962 and an Bay, Louisiana, occuring in fine sand from the drift line Huustorius ulgeriemis Mulot, 1967, are distributed in to a depth of 1 -2 meters, and Robertson and Shelton the northwestem Atlantic and along the North African (1980) found an undescribed species in a similar habitat coast in the Mediterranean Sea, respectively. on the Texas coast. Manuscript received October 12, 1990, accepted Dccember 19, 1990. 25 9 m FOSTERAND LECROY PK-f, USNM 250742, Perdido Key, Florida, swash zone in medium s'and, 23 July 1987, coll. R.W. Heard. Male, 10.0 mm, MISS-a, USNM 250743; female, 10.0 nim, MISS-b, USNM 250744; female, 8.0 tnm, MISS-c USNM Material for Ibis sludy came from several locations 250745, Ranger Lagoon, Honi Island, Mississippi Sound, along tlie coasts ol' Florida arid Mississippi. Tliese swash zone, 25 Jan. 1989, coll. R. W. Heard. include St. Andrew Bay, Paii"~City Beach, Cape San Additional Material: males, 9 females, 4 juvenilw, Perdido Key, Florida, well and Ship 5 Has, and as as Horn USNM 250746; 4 males, 8 females, juvenile, GCRL Islaiids, Mississippi. all localities, aniphipods were 1 In 1142, St Andrew Bay, Florida, West medium sand collected in the swash zone and from tidal pools with Pass, in wave pool above swash zone, 14 Oct. 1989, coll. J. M. suction devices (yabby pumps), push nets, or coring Foster. 4 males, 5 females, 7 juveniles, USNM 250747; tools. See Saloman (1976) and Heard mid Stuck (1988) 31 males, 42 females (1 ovg.), 73 juveniles, USNM for detailed information on localities, methodology, 250748; 7 males, 7 females (1 ovg.), 9 juveniles, GCRL sedimentology, and associated fauna. 1143, Perdido Key, Rorida, subtidal sand, 4-6 1989, Margins of the antennae atid uropods are referred to Oct. coll. R. W. Heard. 2 males, 1 female (ovg.), 2 juveniles, as dorsal atid ventral in the text, as opposed iuiterior to USNM 250749; 1 male, 1 female, GCRL 1144, Horn and posterior, because of their orientation along the main Island, Mississippi Soutid, swash zone sand, 25 Jan. axis of tlie body. 1990, CONR. W. Heard. 7 males, 4 females (3 ovg.), USNM 250750; 8 males, 3 females (2 ovg.), GCRL 1145, Haustoriidae Stebbing, I906 Ship Island, Mississipyi Sound, subtidal sand, 12 July Hauslorihae Bous field, 1965 1988, coll. R. W. Heard. 2 males, 2 females, USNM Haustorius Muller, 1775 250751; 1 male, 1 female, GCRL 1146, Ship Island, Ifaustorius jayneae, new species Mississippi Sound, swash zone sand, 12 July 1988, coll. Figures 1 - 4 R.W. Heard. Haustorius new species: Saloman and Naughton, 1977, Diagnosis pp. 359-362 Antenna 1, accessory flagellum 4-5 segmented. 1;lnuston'us species: Saloman and Naughton, 1978, pp. Rostrum short, subacute, wide at base, not exceeding 67-68 midpoint of antenna I, peduncle 1. Pereopod 5, article 6, anterior margin with 3-4 spine groups. Pereopod 6, Material Examined article 4, posterior margin markedly oblique proximally, bearing 3-4 spines distally; article 5 subquadrate with Holotype: Female, 6.0 mm, SAB-e, St. Andrew Bay, distinct anterodistal spinous lobe. Pereopod 7, coxal Florida, West Pass, medium sand in wave pool above plate with setae on posterodistal margin only; article 4, swash, 25 OC, 28 ppt, 14 Oct. 1989, USNM 250725, coll. proximal margin sharply set off from posterior margin, J. M. Foster. posterior margin with 1 spine group, distolateral mar- Paratypes: Female, 8.0 nim, SAB-a, GCRL 1141; ginal spines extending half length of distal margin. female, 5.3 mm, SAB-b, USNM 250726; male 5.0 mm, Uropod I, peduncle, dorsolateral margin with 1-2 proxi- SAB-c, USNM 250727; male, 4.0 mm, SAB-d, USNM mal spines, proximal and distal spines only. Telson cleft 250728; male, 6.0 mm, SAB-f, USNM 250729; male, 7.0 one-third distance to base. mm, SAJ3-g, GCRL 1141; male, 5.0 mm, SAB-h, USNM 250730; female, 7.0 mm, SAB-1, USNM 250731; female, Description 7.0 mm, SAB-j, USNM 250732; male, 6.0 mm, SAB-k, USNM 250733, Panama City Beach, Florida, moderately Paratype male SAB-f. 6.0 mm. Panama City Beach, sorted fie sand, swash zone, 18.0 "C, 32.70 ppt, 4 Feb. Florida 1975, coll. C. H. Saloman. Male, 5.5 mm, CSB-a, USNM 250734; male, 6.0 mm, CSB-b, USNM 250735; female Head - Broadest medially, rostrum blunt, wide at (ovg), 5.0 mm, CSB-d, USNM 250736; female, 5.0 mm, base; slightly exceeding anterolateral apices, extending CSB-f, USNM 250737; female, 7.0 mm, CSB-g, USNM one-quarter of dorsally visible length of antenna 1, 250738, Cape San Blas, Florida, wet, intertidal fine sand peduncle 1; antennal sinuses markedly convave.
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