Hatschekia fuscoguttatus, Lee & Lee & Boxshall, 2013
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publication ID |
https://doi.org/ 10.5252/z2013n3a3 |
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persistent identifier |
https://treatment.plazi.org/id/51692336-BA50-FFDC-E26F-6F67435AA68A |
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treatment provided by |
Felipe |
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scientific name |
Hatschekia fuscoguttatus |
| status |
sp. nov. |
Hatschekia fuscoguttatus n. sp.
Hatschekia sp. 5 – Justine et al. 2010a: fig. 1D.
TYPE HOST. — Epinephelus fuscoguttatus (Forsskål, 1775) ( Perciformes : Serranidae ).
TYPE LOCALITY. — Passe de Dumbéa, New Caledonia (22°21’59’’S, 166°14’59’’E).
ETYMOLOGY. — The specific name of the new species, fuscoguttatus , is treated as a noun in apposition and is based on its host.
MATERIAL EXAMINED. — Holotype female (MNHN- IU-2013-4016) dissected on 11 slides. Paratype female ( NHMUK 2012.1316 About NHMUK ) dissected on 5 slides. 7 ♀♀ undissected paratypes (1♀ used for SEM): from E. fuscoguttatus [JNC 2120], Passe de Dumbéa , New Caledonia, coll. J.-L. Justine, 5.XII.2006. 1 ♀ in MNHN-IU-2013-4017, 5 ♀♀ undissected in MABIK CR00179954 - CR00179958 );
7 ♀♀ undissected paratypes from E. fuscoguttatus [JNC1379], Passe de Dumbéa, New Caledonia, coll. J.- L. Justine, 24.IX.2004. 4 ♀♀ in MNHN-IU-2013-4018, 3 ♀♀ in NHMUK 2012.1317-1319.
DESCRIPTION
Female
Total body length 910-1037 Μm (n = 9, mean = 982 Μm) excluding caudal rami. Cephalothorax ( Fig. 13A View FIG ) much wider than long, with angular expansions in middle of lateral margins, not projecting frontally, with truncate, transverse posterior margin (196 × 307 Μm); dorsal surface with distinct chitinous markings, subdivided by bar along mid-line almost joining tips of lateral bars; bar in mid-line with right-angled side branches near bifid tip. Lateral bars defining sub-rectangular shape.Trunk ( Fig.13A View FIG ) fusiform, longer than wide (709 × 234 Μm), exhibit - ing slight constriction posterior to second legs; trunk narrowing posteriorly. Urosome ( Fig. 14F View FIG ) comprising fused genital complex and abdomen constricted near base, longer than wide (50 × 77 Μm) (excluding caudal ramus). Caudal ramus ( Fig. 14F View FIG ) longer than wide (39 × 17 Μm), with seven naked setae, longest seta partly fused to ramus at base. Egg sacs shorter than trunk, each egg sac with two elongate eggs.
Rostrum trapezoidal in ventral view ( Fig. 10D View FIG ). Antennule ( Fig. 13B View FIG ) 4-segmented; length 252 Μm; armature formula: 9, 10, 1, 13 + ae. Antenna ( Fig. 13C View FIG ) 3-segmented; proximal segment unarmed (not figured); middle segment (basis) small, tapering slightly distally, ornamented with minute surface pits; terminal claw small without ornamentation, subdivided by incomplete suture; total length 160 Μm; middle segment length 113 Μm; terminal claw length 47 Μm. Parabasal papilla large, with rounded knob-like tip (arrowed in Fig. 10C View FIG ), extending beyond lateral margin. Oral cone robust. Mandible ( Fig. 13D View FIG ) slender, short, rod-like, with three small blunt teeth.Maxillule ( Fig. 13E View FIG ) bilobate; both lobes armed with two long, tapering, acute processes.Maxilla ( Fig. 13A View FIG ) 4-segmented; proximal segment unarmed; second segment swollen with one basal seta; third segment rod-like, elongate, with one distal seta; terminal segment small, with one small seta and bifid claw. Maxilliped absent.
Leg 1 ( Fig. 14B View FIG ) biramous; protopod bearing one fine inner spine, and one long outer seta ornamented with single setule distally; exopod indistinctly 2-segmented, exp-1 with one outer seta, exp-2 with four setae (innermost seta minute); endopod 2-segmented, enp-1 unarmed, enp-2 with three setae (one minute seta on inner margin, one long and one short seta distally); protopod length 68 Μm; exopod length 58 Μm; endopod length 26 Μm. Leg 2 ( Fig. 14C View FIG ) biramous; protopod bearing long outer seta, ornamented with single setule; exopod 2-segmented, exp-1 with one plumose outer seta, exp-2 with two long coiled distal setae; endopod 2-segmented, enp-1 unarmed, enp-2 with two elongate setae and minute distal seta; protopod length 119 Μm;exopod length 115 Μm; endopod length 84 Μm. Rami of leg 2 ( Fig. 14C View FIG ) ornamented with crescentic rows of blunt spinules on surface. Intercoxal sclerites of both legs elongate, unornamented and unmodified. Leg 3 ( Fig. 14D View FIG ) represented by small lobe tipped with two plumose setae at mid-length of trunk. Leg 4 ( Fig. 14E View FIG ) represented by one plumose seta located at three quarters length of trunk.
Male
Unknown.
REMARKS
Hatschekia fuscoguttatus n. sp. exhibits a unique feature in the presence of very long apical setae on both rami of leg 2. These setae are about twice as long as the entire exopod and are sufficient to distinguish the new species from all its congeners. There are two of these setae on the tip of each ramus and they are loosely coiled in fixed specimens. The setae on the rami of leg 1 are more normal in length. In many other respects the new species resembles H. cadenati Nunes-Ruivo, 1954 which is redescribed below in the present study, based on new material from New Caledonia. They are similar in characters such as general body shape, antennulary segmentation, form of the antenna, and in the possession of egg sacs containing just two eggs each. Additional differences can be found in the antennule armature formula which is 9, 10, 1, 13 + ae in the new species, compared with 5, 8, 1, 13 + ae in H. cadenati . So, the new species has four and two additional setae on the first and second antennulary segments respectively. The armature of the distal two segments is the same. These species also differ in the number of teeth on the mandible. The form of the parabasal papilla is different: in the new species it is a large process with a rounded knob-like tip that extends beyond the lateral margin of the cephalothorax, whereas in H. cadenati it comprises four or five thumb-like or oval processes.
| NHMUK |
Natural History Museum, London |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.