Sisalia carricarti Ortiz & Winfield, 2014, sp. nov.
Creators: name: Ortiz, M.
name: Winfield, I.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Cyproideidae
Sisalia
Sisalia carricarti

description: Sisalia carricarti sp. nov.
(Figs 1–3)
Type material. Holotype: adult male, 1.3 mm, CNCR 28281, collected from Sisal reef (Sisal Bocacha station (21°19´17.3´´N; 90°20´02.6´´W) associated with macroalgae bed (Udotea sp.) from 6 to 8 m depth, on 0 4 July, 2012, Yucatan offshore habitat, Mexico, SE Gulf of Mexico.
Paratype: female with oostegites and five eggs, 1.1 mm, CNCR 28282, partially dissected; collected from Bajo de diez station (21°20´50.8´´N; 90°08´53.0´´W), associated with macroalgae Dictyopteris delicatula at 12 m depth, on 0 4 July, 2012.
Other material examined, CNCR 28283: female with oostegites and 1 egg, 1.3 mm; male, 1.1 mm, both associated with seaweed Callithamnion corymbosum, Puerto Progreso station (21°20´23.1´´N; 89°40´49.5´´W) from 2 to 6 m depth, on 0 5 July, 2012.
Etymology. This new species is named in honour of Dr. Juan Pablo Carricart Ganivet, great friend and a renowned Reef Coral Sclerochronology researcher of the Universidad Nacional Autónoma de México, México.
Description. Based on holotype male, 1.3 mm, CNCR28281; same diagnosis of the genus, plus:
Head with a small rostrum; eye big and rounded; with 40–46 ommatidia; antennae 1–2 as long as head (including the flagella) (Fig 1 A, 1B, 1C).
Body dorsally smooth; combined segments 1 and 2 as long as segment 3; segment 4 a little longer than 1–3 combined; segment 4 as long as 5–7 combined; pleonal segment 3 the longest; urosomite 1 longer than 2–3 combined; epimera 1–3 with posteroventral corner unproduced; telson longer than urosomites 2–3 combined (Fig 1 A).
Coxae 1–2 very small, quadrate; hidden by coxa 3; coxae 3–4 directed forward; coxa 3 shorter than 4, but as deep as 4, surpassing ventral corner of head; coxa 4 with posterior lobe reaching posterior border of coxa 6; coxae 5–7 small and quadrate (Fig 1 A).
TABLE 2. The more significant morphological characters used to compare genera in the family Cyproideidae.
Genera Mandible palp Mandible molar Palp of maxilla 1 Basis of pereopod Urosomite 1 Urosomite 3 7
Austropheonoides J. L. Barnard, 1972 3 articulate large triturative 1 articulate expanded elongate, dorsally keeled unvaulted Gbroidea Lowry & Azman, 2008 3 articulate absent 1 articulate expanded elongate without dorsal keel not projected over telson Cyproidea Haswell, 1880 3 articulate medium to small 1 articulate rectolinear not elongate or keeled vaulting over telson Hoplopheonoides Shoemaker, 1956 3 articulate large 1 articulate weakly expanded elongate, dorsally keeled unvaulted Hoplopleon K. H. Barnard, 1932 absent large 2 articulate expanded elongate, dorsally keeled unvaulted Mokuoloe J. L. Barnard, 1970 3 articulate large 1 articulate expanded not elongate or keeled unvaulted Moolapheonoides J. L. Barnard, 1974 3 articulate large, triturative 1 articulate expanded elongate, dorsally keeled unvaulted Narapheonoides J. L. Barnard, 1972 absent large, triturative 1 articulate expanded elongate, dorsally keeled unvaulted Neocyproidea Hurley, 1955 absent large, triturative 1 articulate expanded elongate with boat- shaped keel, unvaulted vaulted
Paracyproidea Stebbing, 1899 3 articulate large, triturative unknown rectolinear not elongate or keeled unvaulted Peltocoxa Catta, 1875 3 articulate large, triturative 1 articulate expanded not elongate or keeled unvaulted Peltopes K. H. Barnard, 1930 3 articulate large, triturative 2 articulate expanded elongate with boat-shaped process unvaulted reaching to base of telson
Pseudopeltocoxa Schiecke, 1977 1 articulate large, triturative 1 articulate expanded not elongate with weak bilateral keels unvaulted Sisalia, gen. nov. 3 articulate large, triturative 1 articulate rectolinear not elongate or keeled not elongate or keeled Stegoplax Sars, 1883 3 articulate large triturative 1 articulate expanded not elongate or keeled unvaulted Terepeltopes Hirayama, 1983 3 articulate large triturative 1 articulate fully expanded elongate, dorsally keeled and vaulted unvaulted over urosome
Unguja Griffiths,1976 absent large triturative 1 articulate expanded elongate with pair of dorsal keels unvaulted Unyapheonoides J. L. Barnad,1972 3 articulate large triturative 1 articulate expanded not elongate or keeled unvaulted Victorhensenoides 3 articulate large triturative 1 articulate expanded not elongate or keeled with pair of dorsal keels Rauschert, 1996
Antenna 1 with flagellum 3–articulated; article one as long as articles 2–3 combined; basal article of peduncle with two long setae distally; article 2 shorter than 3; article 3 with a terminal long seta (Fig 1 B).
Antenna 2 slender and shorter than antenna 1; peduncle article 4 shorter than 5, combined as long as 3- articulated flagellum (including apical seta) (Fig 1 C).
Mouthpart bundle quadrate (Fig 1 A). Mandibles with big and triturative molars; incisors armed with 8 teeth; mandible palp 3-articulated, article 3 with two distal setae, and four rakers robust setae; left mandible with lacinia mobilis of 8 teeth; missing in the right one (Fig 1 D, 1E). Maxilliped inner lobe narrower and shorter than outer, two subterminal robust setae; outer lobe unarmed, a subdistal depression on inner margin, distally pointed; palp articles 1–3 subequal; articles 1 and 2 each with two subdistal setae on inner margin; article 3 with one small distal seta on outer margin, and another longer on inner margin; article 4 shorter than 3, naked (Fig 1 F). Maxilla 1 outer lobe with four robust distal setae and five subdistal small setae; palp uniarticulate armed with four distal robust setae; inner lobe very small, with a tiny distal seta (Fig 1 G). Maxilla 2 longer than wide; inner lobe wider than outer, with six distal setae; outer lobe with three distal setae (Fig 1 H). Lower lip asymmetric; inner lobe absent; outer lobe with 3–4 setae on inner margin at each side; mandible lobes poorly developed (Fig 1 I); Upper lip lobed asymmetricaly; devoid of setae (Fig 1 J).
Gnathopod 1 a little smaller than 2; articles 2–3 devoid of setae; article 4 with a subdistal and short seta on posterior margin; article 5 short, a posterior long seta; article 6 3x longer than 5, with two setae on medial posterior margin and another subterminal; palm oblique; palmar angle poorly defined; dactylus armed with 6–7 robust setae on inner margin (Figs 2 A, 3G).
Gnathopod 2 article 2 with seven long setae on anterior margin and one distal seta on outer; article 3 with two posterodistal setae; article 4 forming posterior lobe, bearing 2 midway long setae on posterior margin, and four distal and long setae; article 5 forming posterior lobe similar in shape to that on article 4, armed with a very strong and long robust setae, among three upper and three lower more, which are normally developed; article 6 subrectangular; palm oblique, armed with two small and four stronger teeth; palmar angle poorly defined; dactylus with 6–8 teeth on basal half of outer margin, and others five on inner margin (Figs 2 B, 3G).
Pereopods devoid of long setae (Figs 2 C–E, 3A–B).
Pereopod 3–4 very similar; article 2 almost as long as articles 3–5 combined; article 5 shorter than 6; article 6 the longest, with one very short seta, midway on posterior border and another, distally; dactylus shorter than article 6 (Fig 2 C, D).
Pereopod 5 article 2 longer than 3–4 combined; rest missing in the type, but similar to those of pereopod 2 and 3, when checked on another male (Fig 2 E).
Pereopods 6–7 similar; article 2 almost as long as articles 3–5 combined, with one midway small setae on posterior margin; article 4 forming a small posterior lobe; article 6 longer than 5, with one small midway seta on anterior margin; dactylus shorter than article 6 (Fig 3 A, B).
Uropod 1 the longest; peduncle naked; rami subequal in length, with one subdistal small seta (Fig 3 C).
Uropod 2 peduncle with one distal seta; inner ramus longer than outer, armed with one basal seta; rami with one small subterminal seta (Fig 3 D).
Uropod 3 devoid of setae; peduncle as long as rami; outer ramus longer than inner (Fig 3 E).
Telson entire, subtriangular and inflated vertically, in lateral view, longer than wide, with two small tubercles midway, in dorsal view (Fig 3 F).
Paratype, female, 1.3 mm, CNCR28282, similar to male; oostegites long and slender, with very few setae; oostegite on gnathopod 2 as wide and long as article 2, with an apical point armed with one seta.
Observations. The most important variation in males included the anterior teeth on dactylus of gnathopod 2 of young specimen are longer than in adult males (Fig. 3 G). The holotype of this new species was collected in Udotea sp. bed, with one ovigerous female of the cyproideid amphipod Hoplopheonoides shoemakeri Ortiz, Lalana & Sánchez –Díaz 2000.
description: Published as part of Ortiz, M. & Winfield, I., 2014, A new genus and species of Cyproideidae (Crustacea: Peracarida: Amphipoda) from a tropical coral reef, SE Gulf of Mexico in Zootaxa 3795 (1), DOI: 10.11646/zootaxa.3795.1.2, http://zenodo.org/record/227893