Bennelongia koendersae Martens, Halse & Schön, 2015, sp. nov.
Creators: name: Martens, Koen
name: Halse, Stuart
name: Schön, Isa
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Ostracoda
Podocopida
Cyprididae
Bennelongia
Bennelongia koendersae

description: Bennelongia koendersae sp. nov.
urn:lsid:zoobank.org:act: 6CA91421-02FF-4A2E-A0E6-89F417057C81
Figs 6 E–H, 7A–N
Abbreviated description
Valves in inner view (Fig. 7A, C–D, F) relatively elongated, with rounded dorsal margin and greatest height situated well in front of the middle; ventral margin anteriorly without pronounced mandibular curve. LV (Fig. 7A, D) with antero-distal il running only halfway along the anterior valve margin, antero-proximal il running slightly higher along the anterior valve margin; posterior il tuberculate and running halfway up the posterior margin. RV (Fig. 7C, F) with antero-ventral lapel large, rounded and strongly serrated (Fig. 7 K–N). Valves with heavy external ornamentation, mostly consisting of small tubercles (Fig. 7B, E, G–J).
Cp (Fig. 7B, E, G–J) with large LV/RV overlap, but less so than in B. tirigie sp. nov. CpD and CpV with greatest width situated in the middle in males (Fig. 7 G–H), slightly behind the middle in females (Fig. 7 I–J), anteriorly with strong and asymmetrical rostrum.
Soft parts as typical of the genus. Hemipenes (Fig. 6 E–F) almost symmetrical, edge of ms slightly sinuous, ls with extremity rounded. Lpp (Fig. 6G) with distal segment rather broad, distal half of second segment with parallel margins. Rpp (Fig. 6H) with distal segment large, subtriangular and with almost straight margins, sensory organ on first segment stout.
Etymology
The species is named after Dr Annette Koenders (Edith Cowan University, Joondalup, WA), in recognition of her contribution to our knowledge of the genetic diversity of various Australian invertebrate groups.
Type material
Holotype
♂ (WAMC55611), with soft parts dissected in a sealed slide and valves stored dry in a micropalaeontological slide.
Allotype
♀ (WAMC55612) carapace stored dry in a micropalaeontological slide.
Paratypes
Numerous males and females from the type locality, either dissected and stored as the holotype, as carapaces used for SEM or in alcohol (WAMC 55613–55619, OC3376–3377). See Table 1 for listing of specimens.
Type locality
AUSTRALIA: Strelley Station, shallow unnamed claypan, Pilbara, WA (sample KIES1A), approximate coordinates: 20°24’58” S, 118°59’4” E. All material collected by the authors on 21 Apr. 2006.
Measurements (all measurements in µm – see Table 1 for measurements of all specimens illustrated with SEM)
Holotype ♂ (WAMC55611): RV: L = 1110, H = 587; LV: L = 1210, H = 621.
Paratype ♀ (WAMC55612): RV: L = 1240, H = 689; LV: L = 1340, H = 729.
Differential diagnosis
Bennelongia koendersae sp. nov. can be distinguished from all other species in the B. nimala lineage by the size and shape of the antero-ventral lapel on the RV, and from B. tirigie sp. nov. by the less pronounced anterior LV/RV overlap. Bennelongia koendersae sp. nov. can be distinguished from those species in the lineage where males are known (B. nimala, B. regina, B. tirigie sp. nov.) by the large and triangular second segment of the Rpp.
Ecology and distribution
The species is only known from its type locality, which is a small, ephemeral, turbid claypan.
Remarks
In a second sample from the 2006 KIES collecting expedition in Pilbara, a species close to B. koendersae sp. nov. was recognised with molecular methods only. This species (as Spec. 15 in Fig. 2) looked very much like B. koendersae sp. nov. and the only two specimens available were both screened in toto by molecular methods to establish conspecificity. Although these specimens cluster close to B. koendersae sp. nov. in the phylogenetic COI tree, they are considered to represent a second species (Fig. 2). As no further specimens are available, it could not be checked whether the species is cryptic or morphologically distinguishable from B. koendersae sp. nov. We thus leave this clade in open nomenclature.
Locality of Spec. 15
Ethel Creek claypan, east of Roy Hill Station, Pilbara, WA (sample KIES15). Approximate coordinates: 22°41’28” S, 119°58’45” E. Specimens collected by the authors on 24 Apr. 2006.
description: Published as part of Martens, Koen, Halse, Stuart & Schön, Isa, 2015, On the Bennelongia nimala and B. triangulata lineages (Crustacea, Ostracoda) in Western Australia, with the description of six new species, pp. 1-36 in European Journal of Taxonomy 111 on pages 16-19, DOI: 10.5852/ejt.2015.111, http://zenodo.org/record/3778507