Birubius oti Taylor 2009, sp. nov.
Creators: name: Taylor, Joanne
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Phoxocephalidae
Birubius
Birubius oti

description: <i>Birubius oti</i> sp. nov. (Figs 9, 10) <b>Type material.</b> Holotype male, 4.5 mm, AM P77843, One Tree Island lagoon (23°30’S 152°05’E), light trap, P.S. McWilliam, 02 Dec 1977 (DN 77–42). Paratypes: 30 males, 2.0– 5.2 mm, AM P77844; 10 males 2.0– 5.2 mm NMV J57287, same locality. <b>Additional material examined.</b> More than 200 males, P75539, same locality as types. <b>Type locality.</b> One Tree Island, Queensland, Australia. <b>Etymology.</b> Named for the acronym of the type locality, One Tree Island (OTI). <b>Description.</b> Based on holotype male. <b>Head.</b> <i>Rostrum</i> unconstricted; eyes present (red pigmented in preserved specimens). <i>Antenna 1</i> peduncle article 2 with ventral setae situated just proximal to middle. <i>Antenna 2</i> peduncle article 4 facial robust setae not in a single row. <i>Mandible palp</i> article 2 with outer setae; <i>molar</i> simple, form D; right molar with 4 spines, without disjunct spines; right incisor with 3 teeth, right lacinia mobilis simple, right raker row of 8 teeth. <i>Maxilla 1</i> inner plate with 3 setae; outer plate with 1 robust seta especially thickened. <i>Maxilliped</i> inner plate with 2 large thick apical robust setae; outer plates, inner margin with well developed setae. <b>Pereon.</b> <i>Coxae</i>, long ventral setae present on coxae 1–3 but absent from coxa 4, main ventral setae of coxae 1–4 = 4–5–4–0. <i>Coxa 1</i> sub rectangular. <i>Coxa 2</i> widened distally. <i>Gnathopods</i> similar. Gnathopod 1 palms oblique. <i>Pereopods 3–4,</i> carpus with 3 posteroproximal robust setae, propodus slender setae absent. <i>Pereopod 5</i> basis of broad form, not tapering distally, without facial ridge. <i>Pereopod 6</i> basis with 2 facial ridges. <i>Pereopod 7</i> basis with few or no long ventral setae, with 2 facial ridges. <b>Pleon.</b> <i>Epimeron 1</i> anteroventral margin with 4 setae, posteroventral face with 2 long setae, posterior pair not set vertically. <i>Epimeron</i> 2 with 6 facial setae, not crowded anteriorly. <i>Epimeron 3</i> fully facial setae absent, with 2 long posterior setae, with 1 short ventral setae. <i>Uropod 1</i>, peduncle basofacial setae present, without major displaced robust setae, with 3 apicolateral spines; inner ramus of uropod 1 with 1 dorsal spine, with subapical accessory robust seta; outer ramus not continuously spinose to apex. Uropods 1–2 rami with well developed apical nails. <i>Uropod 3</i> outer ramus article 2, with 2 apical setae. <b>Habitat.</b> Collected in light traps. <b>Remarks.</b> This new species of <i>Birubius</i> can be distinguished from all other species of the genus by the following combination of traits; right lacinia mobilis simple, coxa 1 not expanded distally, with 4 long ventral setae; pereopods 3–4 carpus with 3 posteroproximal robust setae, epimeron 3 without fully facial setae and the presence of 2 basofacial setae on uropod 1. This species is most easily distinguished from others from the GBR by the unconstricted rostrum, 3 posteroproximal robust setae on pereopods 3-4 carpus and the presence of a subapical accessory robust seta on uropod 1 inner ramus. <b>Distribution.</b> <i>Australia</i>. Queensland: One Tree Island (current study).
description: Published as part of <i>Taylor, Joanne, 2009, Phoxocephalidae *, pp. 800-827 in Zootaxa 2260 (1)</i> on page 813, DOI: 10.11646/zootaxa.2260.1.44, http://zenodo.org/record/5306993