Hyachelia lowryi Serejo &amp; Sittrop, 2009, sp. nov.
Creators: name: Serejo, Cristiana S.
name: Sittrop, Daniela J.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Hyalidae
Hyachelia
Hyachelia lowryi

description: <i>Hyachelia lowryi</i> sp. nov. (Figs 1, 2) <b>Type material.</b> Male, holotype 7.5 mm, QM W28860, Mon Repos, Queensland, Australia (~ 24°48’S 152°26’E), on loggerhead turtle <i>Caretta caretta</i> (Linnaeus, 1758), C. Limpus, 1975-1976. Paratypes: female, 5.2 mm, QM W28861, same station data; male, 7.5 mm, AM P80162, same station data; 45 males and 7 females, QM W28862, same station data; 2 males, 1 female, AM P80163, same station data; 4 males (3.3–4.8 mm) and 7 females (3.2–4.4 mm), QM W7387, Heron Island, Queensland, Australia (~ 23°27’S 151°55’E), from turtle, C. Limpus &amp; R. Monroe, July 1975; 4 males (7.1–7.7 mm) and 5 females (8.2–8.6 mm), QM W7393, Heron Island, Queensland, Australia (~ 23°27’S 151°55’E), on green turtle <i>Chelonia mydas</i>, C. Limpus, 10 July 1975. <b>Type locality.</b> Mon Repos, Queensland, Australia (~ 24°48’S 152°26’E) (on loggerhead turtle, <i>Caretta caretta</i>). <b>Etymology.</b> The name of the species is in honor to Dr Jim Lowry (Australian Museum), a great amphipod specialist, a good friend, and also one of the organizers of the Lizard Island workshop and consequently editor of this book. <b>Description.</b> Male, holotype, 7.5 mm, QM W28860. <b>Head.</b> <i>Head</i> eyes present, well developed, round. <i>Antenna 1</i> slightly longer than peduncle of antenna 2. <i>Antenna 2</i> short, not surpassing pereonite 2, peduncle slender, flagellum with 9 articles. <i>Upper lip</i> distally setose. <i>Lower lip</i> with distal and inner margin densely setose. <i>Mandible</i> right with bifid lacinia; left lacinia 5– 6 dentate. <i>Maxilla 1</i> palp 1-articulate, reaching the base of setal-teeth of outer lobe. Maxilliped palp with long, whip-like apical seta, about 4 x article 4 length. <b>Pereon.</b> <i>Gnathopods 1–2</i> distinctly different in size. <i>Gnathopod 1</i> subchelate; coxa about as long as broad, narrowing distally and distinctly smaller than subsequent coxae; propodus palm transverse, dactylus shorter than palm. <i>Gnathopod 2</i> subchelate; coxa subquadrate; carpus not projecting between merus and propodus, without setae on the posterior margin; palm extremely acute, parallel to anterior margin and with robust setae all over its extension; dactylus about as long as palm. <i>Coxae 1–4</i> lacking posterior process. <i>Coxa 2–4</i> longer than wide; coxa 4 wider than long. <i>Pereopods 3–7</i> prehensile, propodus with 7 distal robust setae in a sequence; dactylus lacking seta on inner margin. <i>Pereopod 7</i> basis about as long as broad. <b>Pleon.</b> <i>Epimeron 3</i> posterior margin smooth, posteroventral corner subquadrate. <i>Uropod 1</i> peduncle without enlarged distal robust seta. <i>Uropod 3</i> peduncle narrowing distally, with a distal robust seta. <i>Uropod 3</i> lacking rami. <i>Telson</i> cleft, much wider than long. <b>Female</b> (sexually dimorphic characters). Based on female, 5.2 mm QM W28861. <i>Maxilliped</i> palp with short apical seta, slightly longer than article 4. <i>Gnathopods 1–2</i> subequal in size and similar; carpus projecting between merus and propodus; palm nearly transverse. <i>Oostegite</i> 2 subtriangular with about 42 setae, oostegite 3 trapezoidal with about 59 setae, oostegite 4 half circle-shaped with about 52 setae, oostegite 5 elongated, narrow with about 34 setae. <b>Habitat</b>. Ectocommensal on sea-turtles. <b>Remarks.</b> Besides some important characters discussed at a generic level that also can be used to distinguish <i>H. lowryi</i> <b>sp. nov.</b> from <i>H. tortugae</i>, such as the palp of maxilla 1 reaching the base of outer lobe setal-teeth (vs vestigial) and the whip-like seta of the male palp of maxilliped (vs. short seta), other differences were noticed. Coxa 4 is wider, about 1.2 x wider than long (vs. as long as wide); propodus of pereopods 3–7 with 7 robust setae (vs 4 robust setae); and the inner ramus of uropods 1–2 with 4–5 setae (vs. lacking setae). <b>Distribution</b>. <i>Australia</i>. North-eastern Queensland (current study).
description: Published as part of <i>Serejo, Cristiana S. &amp; Sittrop, Daniela J., 2009, Hyalidae *, pp. 440-452 in Zootaxa 2260 (1)</i> on pages 441-444, DOI: 10.11646/zootaxa.2260.1.24, http://zenodo.org/record/5323848
description: {"references": ["Linnaeus, C. (1758) Systema Naturae, Ed. X. (Systema naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata) Holmiae, 1 - 824."]}