Neastacilla soelae, King, 2003

King, R. A., 2003, Neastacilla Tattersall, 1921 redefined, with eight new species from Australia (Crustacea: Isopoda: Arcturidae), Memoirs of Museum Victoria 60 (2), pp. 371-416 : 401

publication ID

https://doi.org/ 10.24199/j.mmv.2003.60.29

DOI

https://doi.org/10.5281/zenodo.12210911

persistent identifier

https://treatment.plazi.org/id/03932060-FFC9-FF96-FF09-F950FBC17F5D

treatment provided by

Felipe

scientific name

Neastacilla soelae
status

sp. nov.

Neastacilla soelae View in CoL sp. nov.

Figures 20–21 View Figure 20 View Figure 21

Material examined. Holotype. Australia: WA, between Dampier and Port Hedland, 19º59.3'S, 117º03.6'E, 52 m, 22 Feb 1983, NMV J16652 About NMV (1 female, 7 mm). GoogleMaps

Paratypes. Australia: WA. Between Dampier and Port Hedland, type locality, NMV J16930 About NMV (1 female, 8 mm) ; 19º27.2'S, 118º58.6'E, 36–46 m, 8 Dec 1982, NMV J40681 About NMV (1 female, 9 mm) GoogleMaps ; 19º29.7'S, 118º52.2'E, 39 m, 24 Oct 1983, NMV J40682 About NMV (1 female, 7.5 mm) GoogleMaps ; 19º56.7'S, 117º53.8'E, 43 m, 26 Aug 1983, NMV J40683 About NMV (1 female, 8.5 mm) GoogleMaps .

Description of female. Head with 2 dorsal elevations between eyes and smaller dorsal elevation anterior to eyes, with setae on elevations, anterolateral lobes angular, rostral point present; lateral margin of head and pereonite 1 not incised, with small flared anterolateral extension. Pereonite 2 with 1 dorsal tuberculate elevation with setae. Pereonite 3 with 2 dorsal elevations with setae. Pereonite 4 about 10 times as long as pereonite 3; with small tuberculate dorsal elevations with dorsal setae along length, anterolateral margins extended and rounded. Pereonites 5–7 with tuberculate elevations with setae. Pleon longer than combined lengths of pereonites 5–7; with small tuberculate dorsal elevations with dorsal setae, with lateral wings, long and tapering, apex acute.

Eyes small and round. Antenna 1 reaching past second peduncular article of antenna 2; aesthetascs present distally and laterally on flagellum. Antenna 2 slender, more than half as long as body; flagellum of 2 articles ending with claw, row of scales undetected.

Maxilla 1 mesial lobe with 3 terminal setae; lateral lobe with 10 distal robust setae. Maxilla 2 mesial lobe with 16 plumose setae, middle lobe with 3 setae, lateral lobe with 3 setae. Maxillipedal endite with 9 mesial setae; 1 coupling hook; palp article 2 with mesial setal rows, articles 3 and 4 with mesial and lateral setal rows, article 5 with mesial and distal setae.

Pereopod 1 propodus slightly shorter than carpus; dactylus longer than wide; without unguis. Pereopods 2–4 without dactylus. Pereopods 5–7 dactylus not denticulate, with unguis and secondary unguis; secondary unguis setiform and slender, only slightly smaller than primary unguis. Uropodal exopod with 2 setae of equal length. Oostegite 4 with a posterior suture.

7–9 mm.

Male. Unknown.

Distribution. Australia: Western Australia; subtidal to 52 m depth.

Etymology. This species is named after the research vessel from which the specimen was collected, RV Soela.

Remarks. This species is from a region (north-western Australia) where little is known about the arcturid fauna. The long tapered pleotelson, loss of dactyli on pereopods 2–4 (a state possessed by N. yuriel sp. nov.) and the setose secondary dactlyus on pereopods 5–7 (also found in N. lawadi sp. nov.) characterise this species.

NMV

Museum Victoria

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Isopoda

Family

Arcturidae

Genus

Neastacilla

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