Turonychus Derkarabetian, Prieto and Giribet, 2021
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publication ID |
https://doi.org/ 10.1071/is20047 |
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publication LSID |
urn:lsid:zoobank.org:pub:81683834-98AB-43AA-B25A-C28C6A404F41 |
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DOI |
https://doi.org/10.5281/zenodo.4531729 |
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persistent identifier |
https://treatment.plazi.org/id/A8BBEC1D-7252-4F82-ADF9-7A0816D28080 |
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taxon LSID |
lsid:zoobank.org:act:A8BBEC1D-7252-4F82-ADF9-7A0816D28080 |
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treatment provided by |
Donat |
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scientific name |
Turonychus Derkarabetian, Prieto and Giribet |
| status |
gen. nov. |
Genus Turonychus Derkarabetian, Prieto and Giribet , gen. nov.
( Fig. 7 B View Fig , 9 View Fig , 10 View Fig )
ZooBank LSID: urn:lsid:zoobank.org:act:A8BBEC1D-7252-4F82-ADF9-7A0816D28080
Type species: Turonychus fadriquei Derkarabetian, Prieto & Giribet , sp. nov., by monotypy.
Diagnosis
This genus can be distinguished from all other Buemarinoidae species based on the number of tarsal segments of leg I: Turonychus has 4+ segments whereas all others have three. Additionally, Turonychus can be distinguished from Buemarinoa by the number of spines on the retrolateral surface of the pedipalp tibia: Turonychus has two spines, whereas Buemarinoa has three ( Fig. 9 B View Fig ). The type locality of Turonychus is in the Levantine region of Spain, ~ 300 km south of the Pyrenees Mountains, a region with a broad distribution of Travunioidea with many local cave-obligate species. Turonychus can be diagnosed from Travunioidea based on male genitalia, as noted for the family above ( Fig. 7 B View Fig ).
Description
Troglomorphic species with unpigmented and uniformly granulated body ( Fig. 9 A View Fig ). Eye mound highly reduced in size, smooth, rising from the anterior margin of the carapace ( Fig. 9 A View Fig , 10 A, B View Fig ), eyes and retinae completely lacking. Dorsal scutum outline Eta H of Kury and Medrano (2016) ( Fig. 9 A View Fig , 10 A View Fig ). Sternum thin and elongate ( Fig. 10 C View Fig ). Genital operculum wide, bearing small tubercles ( Fig. 10 C View Fig ). Pedipalps thin, elongate, lacking pigment, with elongate spines bearing setae ( Fig. 9 B View Fig , 10 E, F View Fig ). Legs extremely long, thin, lacking pigment. Tarsal formula: 4 – 5,13 – 15,4,4. Penis with ventral plate modified into two elongate articulated lobes each of which have two superior and three inferior spines ( Fig. 7 B View Fig ).
Comments
We describe Turonychus as a new genus, as opposed to a second species of Buemarinoa , as it differs from the latter in multiple morphological characters noted above. Other differences may become more apparent with additional specimens of Buemarinoa (e.g. spine-bearing tubercles at lateral margins of scutal segments). Additionally, the divergence between these two genera is likely ancient, as Sardinia began separating from the mainland (now the north-eastern part of the Iberian Peninsula) beginning ~30 MA ( Schettino and Turco 2006).
Etymology
The genus prefix is derived from the demonym for the province of Teruel (‘turolense’) where the type locality is found, and the suffix is derived from Latin onyx and Ancient Greek ó ’ n u j (ónux) meaning ‘claw’, a common suffix applied to many travunioid and triaenonychoid genera. The prefix turol- may be more accurate; however we prefer tur- as it is more euphonious.
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