Leucothoe makrommatos White &amp; Thomas, 2009, sp. nov.
Creators: name: White, Kristine N.
name: Thomas, James Darwin
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Ericales
Ericaceae
Leucothoe
Leucothoe makrommatos

description: <i>Leucothoe makrommatos</i> sp. nov. (Figs 15, 16, Pl. 4A) <b>Type material.</b> Holotype, male, 5.6 mm, AM P 79820, Three Sisters Bommie, Yonge Reef (14°36.104’S 145°37.126’E), in ascidian host on a back reef bommie, 12 m, K. Klebba, 3 March 2005 (QLD 1789). Paratype, female, 6.0 mm, AM P 79821, same station data. <b>Additional material examined.</b> 1 male, AM P 70697 (QLD 1643); 1 male, AM P 71207 (QLD 1755); 1 female, 1 male, AM P 71213 (QLD 1760); 4 females, 3 males, AM P 71353 (QLD 1789); 1 female, AM P 71458 (QLD 1789); 1 male, AM P 79822 (QLD 1820). <b>Type locality.</b> Yonge Reef, Queensland, Australia (14°36.104’S 145°37.126’E). <b>Etymology.</b> After the Greek ‘ <i>makros</i> ’, meaning ‘long’ and ‘ <i>omma</i> ’, meaning ‘eye’ and referring to the elongate eye shape of this species. <b>Description.</b> Based on holotype, male, 5.6 mm, AM P79820. <b>Head.</b> <i>Head</i> length less than pereonites 1+2, anterior margin rounded, without serrations or teeth, anterodistal margin rounded without cusp, ventral cephalic keel subquadrate, rostrum small to medium; eyes with 10 or more ocelli, elongate. <i>Antenna 1</i> 0.3 x body length; flagellum 7-articulate, peduncle width less than 2 x article 2. <i>Antenna 2</i> 0.2 x body length, shorter than antenna 1; flagellum 4-articulate. <i>Mandibles</i> lacking molars, palp 3-articulate, ratio of articles 1 <i>–</i> 3, 1.0: 2.5:1.8, article 2 with 5 distal setae, article 3 with 2 distal setae, incisors strongly dentate; left mandible lacinia mobilis large, weakly toothed, with 10 accessory setae; right mandible lacinia mobilis small, with 10 accessory setae. <i>Upper lip</i> asymmetrically lobate, anterior margin setose. <i>Lower lip</i> inner lobes fused, bare; outer lobes with moderate gape, anterior margins strongly setose. <i>Maxilla 1</i> palp 2-articulate with 4 distal setae; outer plate with 5 distal spines and 4 distal setae. <i>Maxilla 2</i> inner plate with nine distal and 10 proximal setae; outer plate with 20 distal setae. <i>Maxilliped</i> inner plates fused, distal margin with v-shaped indentation, with short spines; outer plate smooth, reduced, reaching less than half of palp article 1, with 2 distal setae and 1 distal spine; palp 4-articulate, article 4 slender, slightly recurved. <b>Pereon.</b> <i>Coxae 1–4</i> relative widths 1.0:1.4:0.9:1.6. <i>Gnathopod 1</i> coxa serrate, bare, anterodistal corner produced, narrowly rounded, distal margin straight, posterodistal margin rounded, facial setae absent; basis constricted proximally, anterior margin with 8–10 setae, posterior margin with 5 <i>–</i> 6 setae; ischium with 2 posterior setae; carpus and propodus distally tapered; carpus length 13.6 x width, proximal margin serrate, distal margin bare; propodus straight, palm serrate with 6 distal setae; dactylus smooth, reaching 0.5 x propodus length. <i>Gnathopod 2</i> coxa length 0.8 x width, slightly wider than coxa 3, smooth, bare, anterodistally rounded, distal margin evenly rounded, posterior margin straight, facial setae absent; basis posterior margin slightly expanded, without tubercles or serrations, anterior margin with 15 <i>–</i> 16 setae, posterior margin with 5 <i>–</i> 6 setae; ischium with 7 posterior setae; carpus 0.6 x propodus length, recurved, distally expanded, anterior margin serrate; propodus posterior margin without teeth/serrations, with 1 mediofacial setal row slightly displaced to midline, subequal with propodus length, 1 row of 6 submarginal setae, palm convex with 6 minor projections; dactylus curved, proximal margin smooth, anterior margin distally acute, reaching 0.7 x propodus length. <i>Pereopod 3</i> coxa length 1.4 x width, anterodistal corner overriding distal face of coxa 2 and extending below it, smooth, bare, anterior margin evenly rounded, distal margin oblique, posterior margin evenly rounded, facial setae absent. <i>Pereopod 4</i> coxa serrate, bare, anterior margin evenly rounded, distal margin produced, posterior margin tapered, facial setae absent. <i>Pereopods 5–7</i> coxa facial setae absent; basis width length ratios 1:1.2, 1:1.2, 1:1.2, posterior margins serrate, bare. <b>Pleon.</b> <i>Epimera 1–3</i> bare. <i>Epimeron 3</i> posteroventral margin subquadrate. <i>Uropods 1–3</i> relative lengths 1.0:0.7:1.1; inner and outer ramus with robust setae. <i>Uropod 1</i> peduncle subequal in length with inner ramus. <i>Uropod 2</i> peduncle 0.7 x inner ramus length; outer ramus 0.8 x inner ramus length. <i>Uropod 3</i> peduncle 1.2 x inner ramus length. <i>Uropod 1+3</i> outer ramus subequal to inner ramus length. <i>Telson</i> 2.1 x longer than wide, apex tridentate. <b>Female</b> (sexually dimorphic characters). Based on paratype, female, 6.0 mm, AM P 79821. <i>Gnathopod 1</i> basis anterior margin with 13 <i>–</i> 15 setae; posterior margin with 29 <i>–</i> 30 alternating short and long setae; ischium with 8 posterior setae. <i>Gnathopod 2</i> basis anterior margin with 28 <i>–</i> 30 short and long setae; posterior margin with 15 setae; ischium posterior margin with 8 setae; distal margin with 10 setae; propodus with 17 submarginal setae in 2 indistinct rows. <b>Habitat.</b> In branchial chamber of an unidentified ascidian species. <b>Remarks.</b> The elongate eyes of <i>L. makrommatos</i> <b>sp. nov.</b> are distinct. <i>Leucothoe makrommatos</i> appears to be closely related to <i>L</i>. <i>wuriti</i> and <i>Leucothoe epidemos</i> <b>sp. nov.</b>, both found in ascidian hosts. <i>Leucothoe makrommatos</i> differs from <i>L. wuriti</i> and <i>L. epidemos</i> in its gnathopod 1 basis posterior setae, its less displaced gnathopod 2 propodus mediofacial setal row and its less prominent gnathopod 2 propodus palm projections. The posterior setae on gnathopod 1 basis is shared with females of <i>L</i>. <i>saron</i>, <i>L</i>. <i>ubouhu</i> and <i>L</i>. <i>bova</i> <b>sp. nov.</b> The serrate coxa 1 and 4 anterodistal margins are shared with <i>L</i>. <i>banwarthii</i>, <i>L</i>. <i>gracilis</i> and <i>L</i>. <i>serrata</i> <b>sp. nov.</b> <i>Leucothoe makrommatos</i> is similar to <i>L</i>. ashleyae <i>,</i> females of <i>L</i>. assimilis <i>,</i> females of <i>L. banwarthii</i>, <i>L</i>. barana, <i>L</i>. <i>kensleyi</i>, <i>L</i>. ubouhu, <i>L</i>. <i>bova</i> <b>sp. nov.</b>, <i>L laevipalma</i> <b>sp. nov.</b>, <i>L</i>. <i>odontiskos</i> <b>sp. nov</b>. and <i>L</i>. <i>undulata</i> <b>sp. nov.</b> in its gnathopod 2 propodus secondary mediofacial setal row. <b>Distribution.</b> <i>Australia</i>. Queensland: Lizard Island (current study).
description: Published as part of <i>White, Kristine N. &amp; Thomas, James Darwin, 2009, Leucothoidae *, pp. 494-555 in Zootaxa 2260 (1)</i> on pages 518-521, DOI: 10.11646/zootaxa.2260.1.29, http://zenodo.org/record/5323471