A quarter millenium of uses and misuses of the turtle name Testudo scabra: Identification of the type specimens of T. scabra Linnaeus 1758 (= Rhinoclemmys punctularia) and T. scripta Thunberg in Schoepff 1792 (= Trachemys scripta scripta)
Author
Rhodin, Anders G. J.
Author
Carr, John L.
text
Zootaxa
2009
2226
1
18
journal article
10.5281/zenodo.275181
9e1db1fd-9700-47e2-9074-b995f2180821
1175-5326
275181
Testudo scripta
Thunberg
in
Schoepff 1792
The specimen of “
Testudo scabra
Thunberg
” (labeled “
Testudo scripta
Thunberg
” on the plate) that Schoepff (1792) used as the basis for the description of
Testudo scripta
(=
Trachemys scripta scripta
) is present in the Thunbergian collection in Uppsala (
Fig. 7
). It is the only specimen of
Testudo scripta
in the collection and was accessioned by Thunberg himself, who recorded it in various versions of his museum catalogues. This specimen is the
holotype
of
Trachemys scripta scripta
and has never previously been located or identified (
Iverson 1992
;
Seidel and Ernst 2006
). Interestingly,
Schweigger (1812:297)
later wrote about
T. scripta
Schoepff
: “
Vidi specimen, quo usus Schoepf., in museo Parisiensi
” (I saw the specimen, used by Schoepff, in the Paris Museum), but that was never confirmed, and it is not there (R. Bour,
pers. comm
.). Instead, it was part of the Thunberg donation to the collections in Uppsala. Since Schweigger visited both collections, he may have meant “
Upsaliensi
” rather than “
Parisiensi
.”
The specimen is a small, dried, misshapen hatchling labeled “
Testudo scripta
Mus. Thunb.
” by Thunberg himself (
Fig. 7
) and is the only
T. scripta
in the entire Linnaean and Thunbergian collections in Uppsala. It measures approximately 31.0 mm straight CL, ca. 30.3 mm PL, and 9.2 mm tympanic head width, and has a trace of its hatchling egg caruncle still visible. It was never given an original accession number, but has now been catalogued as UUZM
Types
7455. It was accessioned into the Uppsala collection sometime between
1785 and 1792
, but not with the first group of Thunberg specimens in 1785, being added to the catalogue as “
Testudo scripta
” after the initial entries (
Thunberg
1785
–1817,
1808–1815
). Aside from entries for this single specimen of
T. scripta
by Thunberg in various other handwritten museum catalogues, the only actual publication documenting its existence was in
Thunberg (1818)
where it was listed as being part of the Thunberg donations to the Uppsala collections.
Based on examination of the poorly-preserved
holotype
and its photos (
Fig. 7
) and examination of its original figure (Schoepff 1792: pl. 3, f. 4, 5, labeled “
Test.
scripta
Thunb.”) (
Fig. 4
), we and other colleagues highly familiar with
T. scripta
(K. Buhlmann, W. Gibbons, and B. Thomas,
pers. comm
.) agree that it fortunately appears to represent a
Trachemys scripta scripta
, but genetic analysis would be helpful to be certain.