Dulzura taylorae Springthorpe &amp; Lowry, 2009, sp. nov.
Creators: name: Springthorpe, R. T.
name: Lowry, J. K.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Hadziidae
Dulzura
Dulzura taylorae

description: <i>Dulzura taylorae</i> sp. nov. (Figs 1, 2) <b>Type material.</b> Holotype, male, 2.1 mm, AM P77595, Mermaid Cove, Lizard Island (14°38.90'S 145°27.26’E), swash/subtidal, protected beach with patch reefs offshore, coarse coral sand with pieces of coral, 0.5–1.0 m, S.E. LeCroy, 2 July 2001 (SEL/LZI-1-1). Paratypes: female, 2.7 mm, AM P77596, 4 females, AMP 77597, same locality. <b>Additional material examined.</b> 1 male, 4 females, AMP 77598 (QLD 20); 1 female, AM P70881 (QLD 1700); 1 female, AM P71347 (QLD 1793). <b>Type locality.</b> Mermaid Cove, Lizard Island (14°38.90'S 145°27.26’E). <b>Etymology.</b> Named for Taylor Springthorpe, the first author’s lovely daughter. <b>Description.</b> Based on holotype, male, 2.1 mm, AM P77595, paratype, female, 2.7 mm, AM P77596. <b>Head.</b> <i>Head</i> eyes poorly developed, round; anteroventral margin with very small ventral notch, anteroventral corner rounded. <i>Antenna 1</i> longer than antenna 2; peduncular article 1 slightly longer than article 2, with 1 robust seta on posterior margin; peduncular article 2 longer than article 3; accessory flagellum minute, with 2 articles. <i>Antenna 2</i> not strongly setose; peduncular article 2 cone gland not reaching to end of peduncular article 3; peduncular article 4 slightly longer than article 5; flagellum with about 6 articles. <i>Mandible</i> molar medium size, accessory setal row present, 5 well developed serrate setae; palp well developed, 3-articulate; article 1 about as long as broad, shorter than article 2, inner margin produced distally; article 2 subequal in length to article 3; article 3 sparsely setose, rectolinear. <i>Maxilla 1</i> inner plate subtriangular, setae along entire inner margin. <i>Maxilla 2</i> inner plate with oblique setal row on inner face, with marginal setal row. <i>Lower lip</i> inner lobes absent. <i>Maxilliped</i> palp article 3, about as long as broad with patch of small dense setae. <b>Pereon.</b> <i>Gnathopod 1</i> subchelate, sexually dimorphic; coxa anteroventral corner not produced, anterior margin straight, not produced, posteroventral corner notch absent; merus without posterodistal tooth; carpus about 2 x as long as broad, longer than propodus, heavily setose laterally; palm nearly transverse, straight, entire, defined by posterodistal corner, with posterodistal robust setae; dactylus well developed, fitting palm. <i>Gnathopod 2</i> subchelate, sexually dimorphic, slightly enlarged in male and female; coxa posteroventral corner notch absent; merus acutely produced distoventrally; carpus short, not lobate, not enclosed by merus and propodus; propodus linear, with strong concentration of setae, palm extremely acute, straight or slightly concave, minutely sculptured, with sparse robust setae, without teeth along margin, without posteroventral corner, with 2 posterodistal robust setae; dactylus closing along palm, reaching end of palm, inner margin smooth, apically acute/subacute. <i>Pereopod 3</i> coxa subequal in length to coxa 2. <i>Pereopod 4</i> coxa posteroventral lobe absent, posterior margin straight. <i>Pereopod 5</i> basis slightly expanded, posterior margin straight, posteroventral corner narrowly rounded or subquadrate; carpus and propodus with few long, slender setae along anterior margin. <i>Pereopod 6</i> coxa anterior lobe slightly produced, rounded; basis posterior margin straight, posteroventral corner narrowly rounded or subquadrate; carpus and propodus with few long, slender setae along anterior margin. <i>Pereopod 7</i> coxa anterior lobe slightly produced, rounded; basis sexually dimorphic, posterior margin slightly convex, smooth or minutely castelloserrate, not produced posterodistally, posteroventral corner narrowly rounded or subquadrate; merus posterodistal margin narrowly rounded or subquadrate; propodus not expanded posterodistally. <b>Pleon.</b> <i>Pleonites/urosomites</i> without dorsal spines or setae. <i>Epimera 1–2</i> posteroventral margin without spines above posteroventral corner. <i>Epimeron 1</i> anteroventral corner rounded, without robust seta, posteroventral corner with small acute spine. <i>Epimeron 2</i> posteroventral corner acute. <i>Epimeron 3</i> ventral margin smooth, posteroventral corner with small acute spine. <i>Uropod 1</i> peduncle with basofacial robust seta, without distoventral spine; outer ramus slightly longer than inner. <i>Uropod 2</i> peduncle with distolateral comb of short setae; rami slender, outer ramus slightly longer than inner. <i>Uropod 3</i> inner ramus short, about 0.5 x outer ramus; outer ramus very long, much longer than peduncle, 2-articulate, article 2 long. <i>Telson</i> cleft, slightly longer than broad, tapering distally, without dorsal robust setae, apical margins concave, with 2 short apical/subapical robust setae, with robust setae on outer margins, without robust setae on inner margins. <b>Female</b> (sexually dimorphic characters). Based on female, 2.7 mm, AM P77596 <i>Gnathopod 1</i> carpus sparsely setose laterally. <i>Gnathopod 2</i> carpus long, subequal to propodus; propodus sparsely setose posteriorly. <i>Pereopod 7</i> basis expanded, posterior margin strongly convex, tapering distally. <b>Habitat.</b> Among coarse coral sand with pieces of coral on protected beaches, and sub-tidally among coral rubble and sediments, 2 <i>–</i> 10 m. <b>Remarks.</b> <i>Dulzura taylorae</i> appears to be most similar to <i>D. paucispinosa</i> Ledoyer, 1983, from the Glorieuses Islands in the south-western Indian Ocean. The main differences between these species appear to be the peduncle of uropod 1 which has a basofacial robust seta in <i>D. taylorae</i> (absent in <i>D. paucispinosa</i>) and the posteroventral corner of epimeron 3 which forms a small acute spine in <i>D. taylorae</i>, but is apparently sexually dimorphic in <i>D. paucispinosa</i> (forming a large acute spine in the female and a narrowly rounded corner with a small acute spine just above it in the male). <i>Dulzura taylorae</i> is also similar to <i>D. melitaformis</i> (Ledoyer, 1979) from Madagascar. However, in <i>D. taylorae</i> there is no distal palmar shelf on the propodus of male gnathopod 2 (present in <i>D. melitaformis</i>), pereopods 5 <i>–</i> 6 are slender (broad in <i>D. melitaformis</i>), the inner ramus of uropod 3 is half as long as the outer (scale-like in <i>D. melitaformis</i>) and the outer ramus is shorter and stouter. The long, narrow outer ramus of <i>D. melitaformis</i> is unique in the genus. <i>Dulzura taylorae</i> differs from the Hawaiian species <i>D. hamakua</i> (J.L. Barnard, 1970) in having no dorsal robust setae on the urosome (present in <i>D. hamakua</i>) and in the posteroventral corner of epimeron 3 which forms a small acute spine (rounded in <i>D. hamakua</i>). <b>Distribution.</b> <i>Australia</i>. Lizard Island: Mermaid Cove; reef between Bird Islet &amp; South Island; Yonge Reef (current study).
description: Published as part of <i>Springthorpe, R. T. &amp; Lowry, J. K., 2009, Hadziidae *, pp. 434-439 in Zootaxa 2260 (1)</i> on pages 435-438, DOI: 10.11646/zootaxa.2260.1.23, http://zenodo.org/record/5323816
description: {"references": ["Ledoyer, M. (1983) Crustaces amphipodes gammariens. Familles des Acanthonotozomatidae a Gammaridae. Faune de Madagascar, 59, 1 - 598.", "Ledoyer, M. (1979) Les gammariens de la pente externe du Grand Recif de Tulear (Madagascar) (Crustacea Amphipoda). Memorie del Museo Civico di Storia Naturale, Verona, Series 2, Sezione Science della Vita, 2, 1 - 150.", "Barnard, J. L. (1970) Sublittoral Gammaridea (Amphipoda) of the Hawaiian Islands. Smithsonian Contributions to Zoology, 34, 1 - 286."]}