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Emys trinacris FRITZ, FATTIZZO, GUICKING, TRIPEPI, PENNISI, LENK, JOGER & WINK, 2005

IUCN Red List - Emys trinacris - Data Deficient, DD

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Higher TaxaEmydidae, Emydinae, Testudines (turtles) 
Subspecies 
Common NamesE: Sicilian pond turtle
G: Sizilianische Sumpfschildkröte
I: Testuggine palustre siciliana 
SynonymEmys trinacris FRITZ, FATTIZZO, GUICKING, TRIPEPI, PENNISI, LENK, JOGER & WINK 2005
Emys trinacris — RHODIN et al. 2010 
DistributionItaly (Sicily)

Type locality: Lago Gian Fenaro, below the pass of Pizzo Laminaria approximately 1400 m elevation, Monte Nebrodi, Sicily Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
TypesHolotype: Museo Zoologico ‘La Specola’, Florence (MZUF 11136). 
CommentDiagnosis. A small Emys species (known maximum straight-line carapacial length: 145 mm) with a dark carapace and a mainly or entirely yellow plastron. Small dark blotches at the distal seams of the plastral scutes are rare but may occur; most frequently on the pectoral-abdominal and on the abdominal-femoral
seams. Emys trinacris differs from the highly polytypic and morphologically variable E. orbicularis by its distinct mitochondrial and nuclear genome, indicating reproductive isolation. Morphologically, E. trinacris differs from the northern E. orbicularis subspecies by its distinctly smaller size and lighter colouration of the shell and soft parts; it differs from the orbicularis subspecies group of E. orbicularis, E. o. luteofusca, and E. o. iberica in that the iris of males is white instead of reddish. Among the small-sized southern subspecies of E. orbicularis, E. trinacris most closely resembles E. o. galloitalica in gross morphology; however, E. trinacris has a more ovoid, and not elongated, shell
outline in dorsal view on average. A light brownish or yellowish brown primary colour of the carapace, which is frequent in E. o. galloitalica, is not known to occur in E. trinacris.

Not recognized by SINDACO & JEREMCENKO 2008.

Phylogeny: when using nuclear DNA, Spinks & Shaffer (2009) found E. trinacris to nest within E. orbicularis. However, when mtDNA was used, it appeared to be in a separate clade.

Reproduction: oviparous. 
EtymologyEtymology: Named after the ancient Greek word for Sicily, “Trinacria” = triangular island, which is still used for Sicily in Italy. 
References
  • Filippo Spadola, Gianni Insacco 2009. Endoscopy of cloaca in 51 Emys trinacris (Fritz et al., 2005): morphological and diagnostic study Acta Herpetologica 4 (1): 73-81 - get paper here
  • Fritz, U.; Fattizzo, T.; Guicking, D., Tripepi, S.; Pennisi, M.G.; Lenk, P.; Joger, U. & Wink, M. 2005. A new cryptic species of pond turtle from southern Italy, the hottest spot in the range of the genus Emys (Reptilia, Testudines, Emydidae). Zoologica Scripta 34 (4): 351–371 - get paper here
  • Fritz, Uwe, Daniela Guicking, Hagi Gholi Kami, Marine Arakelyan, Markus Auer, Dínçer Ayaz, Ceesar Ay 2007. Mitochondrial phylogeography of European pond turtles Emys orbicularis, Emys trinacris - an update. Amphibia-Reptilia 28 (3): 418-426 - get paper here
  • Fritz, Uwe; D'Angelo, Stefania; Pennisi, Maria Grazia; Valvo, Mario Lo 2006. Variation of Sicilian pond turtles, Emys trinacris What makes a species cryptic? Amphibia-Reptilia 27 (4): 513-529 - get paper here
  • Joger, U.; Fritz, U.; Guicking, D.; Kalyabina-Hauf, S.; Nagy, Z.T. & Wink, M. 2007. Phylogeography of western Palaearctic reptiles – Spatial and temporal speciation patterns. Zoologischer Anzeiger 246: 293–313 - get paper here
  • Kwet, A. 2010. Reptilien und Amphibien Europas. Kosmos-Verlag, Stuttgart, 252 pp.
  • Spinks, Phillip Q. & H. Bradley Shaffer 2009. CONFLICTING MITOCHONDRIAL AND NUCLEAR PHYLOGENIES FOR THE WIDELY DISJUNCT EMYS (TESTUDINES: EMYDIDAE) SPECIES COMPLEX, AND WHAT THEY TELL US ABOUT BIOGEOGRAPHY AND HYBRIDIZATION. Systematic Biology 58(1): 1-20 - get paper here
  • TTWG; Rhodin, A.G.J.; van Dijk, P.P.; Iverson, J.B. & Shaffer, H.B. [turtle taxonomy working group] 2010. Turtles of the World, 2010 Update: Annotated Checklist of Taxonomy, Synonymy, Distribution, and Conservation Status. Chelonian Research Monographs (ISSN 1088-7105) No. 5, doi:10.3854/crm.5.000.checklist.v3.2010
 
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