Bennelongia gnamma, Martens & Halse & Schön, 2013
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publication ID |
https://doi.org/ 10.5852/ejt.2013.66 |
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publication LSID |
lsid:zoobank.org:pub:5270B024-84C1-4CD5-BC18-4AF37D2E1045 |
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DOI |
https://doi.org/10.5281/zenodo.3846916 |
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persistent identifier |
https://treatment.plazi.org/id/6931D617-1443-4776-891B-C02752E6C0BE |
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taxon LSID |
lsid:zoobank.org:act:6931D617-1443-4776-891B-C02752E6C0BE |
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treatment provided by |
Carolina |
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scientific name |
Bennelongia gnamma |
| status |
sp. nov. |
Bennelongia gnamma sp. nov.
Figs 12 View Fig , 13 View Fig A-E
urn:lsid:zoobank.org:act:6931D617-1443-4776-891B-C02752E6C0BE
Diagnosis
Valves in internal view ( Fig. 12 View Fig A-B, E-F) high, with greatest height situated in front of the middle; ventral margin almost evenly curved except for middle third. LV ( Fig. 12A, E View Fig ) with anterior il slightly overlapping. RV ( Fig. 12B, F View Fig ) with antero-ventral lapel subtriangular, asymmetrically produced with a dorsal point ( Fig. 12 View Fig H-K).
Valves in external lateral view ( Fig. 12 View Fig C-D) high and rounded on all sides, even ventrally to some extent; hirsute and weakly pitted. Carapace in dorsal view ( Fig. 12G View Fig ) anteriorly with a mild rostrum.
Hemipenes ( Fig. 13A View Fig ) mostly symmetrical, with length of ls subequal to that of ms, in one specimen tip of ms even extending beyond that of ls ( Fig. 13B View Fig ); ls with broad base, ventrally bluntly beak-shaped. Right prehensile palp ( Fig. 13C View Fig ) with distal segment broad, with anterior margin straight, distal margin bilobed. Left prehensile palp ( Fig. 13 View Fig D-E) with distal segment short, reaching beyond ventro-apical margin of proximal segment with less than half its length.
Etymology
The present species is named after the Australian term for small to middle-sized rock pools, namely gnammas, in which it occurs.
Measurements (all measurements in µm – see Table 1 View Table 1 for measurements of all specimens illustrated with SEM)
Holotype ♀ ( WAMC52264 ): RV: L = 1550, H = 915. LV: L = 1620, H = 991.
Type locality
Rock pools (gnammas) on Cairn Rock, WA, ca. 67 km SE of Merredin. Approximate coordinates: 31º51’31” S, 118º50’39” E (WGS 84). All material (voucher sample OSTR012A; locality code SPS059) collected by J. McRae & A. Pinder on 24 Sep. 1997 with a sweep net.
Type material
Holotype
♀ ( WAMC52263 ), with soft parts dissected in a sealed slide and valves stored dry in a micropalaeontological slide.
Allotype
♂ ( WAMC52264 ), with soft parts dissected in a sealed slide, and valves stored dry in a micropalaeontological slide.
Paratypes
2 ♀♀ ( WAMC 52266; OC.3322) and one ♂ ( WAMC 52265); 3 ♀♀ in bulk in EtOH ( WAMC 52267).
Other material investigated
? 1 ♀ ( WAMC 52268) from Yanneymooning Rocks (identification uncertain).
Differential diagnosis
Bennelonga gnamma sp. nov. can be distinguished from all other species in the lineage by the high and rounded shape of the valves and especially by the subequal ls and ms in the hemipenes.
Ecology and distribution
This species is thus far known with certainty only from its type locality, a set of rock pools on Cairn Rock.
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.