I tiakina i:
| Kaituhi matua: | |
|---|---|
| Hōputu: | Recurso digital |
| Reo: | |
| I whakaputaina: |
Zenodo
2003
|
| Ngā marau: | |
| Urunga tuihono: | https://doi.org/10.5281/zenodo.12210923 |
| Ngā Tūtohu: |
Tāpirihia he Tūtohu
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!
|
Rārangi ihirangi:
- <p><b><i>Neastacilla tharnardi</i> sp. nov.</b></p><p>Figures 25–27</p><p><i>Material examined.</i> Holotype. Australia: Vic., Portland, Saxon Reef, 38º18.5’S, 141º38.5’E, 11 m, R. Wilson, 5 Mar 1992, NMV J24200 (1 female, 5 mm).</p><p>Paratypes. Australia: <b>SA.</b> Tiparra Bay, Tiparra Reef, 34º04.0’S, 137º23.0’E, 10 m, G.C.B. Poore and H.M. Lew Ton, 15 Mar 1985, NMV J16575 (1 male, 5 mm). Investigator Group, 33º43.0’S, 134º36.6’E, 20 m, K. Brandon and G.C.B. Poore, 21 Apr 1985, NMV J47326 (manca-2, 3 mm).</p><p><i>Description of female.</i> Head with 2 dorsal elevations (each with 3 apices) between the eyes, anterolateral lobes angular with small tubercles, small rostral point present; lateral margin of head and pereonite 1 incised. Pereonite 1 with dorsal elevation with 3 apices; with large, laterally curved anterolateral expansion. Pereonite 2 with dorsal elevation with single apex, with narrow lateral extensions. Pereonite 3 with dorsal elevation with 3 apices, with narrow lateral extensions. Pereonite 4 about 4 times as long as pereonite 3, with 4 anterior dorsal elevations, 2 dorsal elevations with many apices at midlength and 2 small dorsal elevations posteriorly, with anterolateral margins extended. Pereonites 5–7 progressively smaller, with small posterior dorsolateral elevations. Pleon longer than combined lengths of pereonites 5–7, with lateral wings, apex acute.</p><p>Eyes small and round. Antenna 1 reaching to the end of the third peduncular article of antenna 2; aesthetascs present laterally on flagellum. Antenna 2 slender, more than half as long as body; flagellum of two articles and claw, second article very small, with a row of scales along full length.</p><p>Maxilla 1 mesial lobe with 3 terminal setae; lateral lobe with 10 distal robust setae. Maxilla 2 mesial lobe with 14 plumose setae, middle lobe with 4 setae, lateral lobe with 3 setae. Maxillipedal endite with 14 mesial setae; 1 coupling hook; palp article 2 with mesial setal rows, article 3 with mesial and lateral setal rows, article 4 with mesial and lateral setae, article 5 with mesial and distal setae.</p><p>Pereopod 1 propodus as long as carpus; dactylus slightly longer than wide, without unguis. Pereopods 2 and 3 with small dactylus. Pereopod 4 without dactylus. Pereopods 2–4 slightly dorsoventrally flattened, with tuberculate lateral elevations at proximal edges of the merus and carpus. Pereopods 5–7 dactylus not denticulate, with primary and secondary unguis; secondary unguis half length of primary unguis. Uropodal exopod with 2 setae of subequal length. Oostegite 4 without a suture, with ventrally projecting elevation posterior to insertion of pereopod 4.</p><p>5 mm.</p><p><i>Male.</i> With less ornamentation than female. Head with 2 dorsal elevations (each with 2 apices) between eyes, anterolateral margins angular with small tubercles. Pereonite 1 with dorsal elevation with a single apex. Pereonite 2 without dorsal elevations, with lateral extensions. Pereonite 3 with dorsal tubercle with single apex, with lateral extensions. Pereonite 4 about 7 times as long as pereonite 3, constricted for the first quarter length; with 2 anterior dorsal elevations at midlength. Pereonites 5–7 progressively smaller, with small posterior dorsolateral elevations. Pleon longer than combined lengths of pereonites 5–7, with lateral wings, apex acute.</p><p>Antennae, mouthparts, pereopods and uropods as for female.</p><p>Pleopod 1 exopod with lateral notch and 2 plumose lateral setae of unequal length. Pleopod 2 appendix masculina with ridge on posterior face; curved; extending quarter length past the endopod; apex simple. Penial plate proximally widened, distally tapered and apex simple.</p><p>5 mm.</p><p><i>Distribution.</i> Australia: Victoria, South Australia; subtidal to 20 m depth.</p><p><i>Etymology.</i> “Tharnardi ” is an Australian Aboriginal word in the Yindjibarndi language from north-western Australia. It means “the sea”.</p><p><i>Remarks</i>. This species of <i>Neastacilla</i> superficially most resembles species of <i>Parastacilla</i> Hale, 1946 (King, 2000). The lateral extension of the head and pereonite 1 as well as the morphology of the anterior pereonites are very similar and no other <i>Neastacilla</i> species. However, in <i>N. tharnardi</i> pereopods 2 and 3 possess dactyli with claws, antenna 2 is elongate and there are no dorsolateral wings on the pleotelson.</p>