Cracticotaenia fieldingi ( Maplestone & Southwell, 1923 )

Mariaux, Jean & Georgiev, Boyko B., 2018, Seven new species of cestode parasites (Neodermata, Platyhelminthes) from Australian birds, European Journal of Taxonomy 440, pp. 1-42: 36-37

publication ID

https://doi.org/10.5852/ejt.2018.440

publication LSID

lsid:zoobank.org:pub:DB80A42B-5C53-455B-86A4-2003D6F03522

DOI

http://doi.org/10.5281/zenodo.3846850

persistent identifier

http://treatment.plazi.org/id/A15C4A58-FFD5-A562-FE23-FCA9FB6FFCD1

treatment provided by

Valdenar

scientific name

Cracticotaenia fieldingi ( Maplestone & Southwell, 1923 )
status

 

Cracticotaenia fieldingi ( Maplestone & Southwell, 1923)  

Fig. 41 View Figs 39–41. 39

Material examined

AUSTRALIA: 1 spec., New South Wales, coll. Tonks, Coluvale, 34°24′ S, 150°30′ E, Apr. 1911, T.H. Johnston leg., host: Strepera graculina (Shaw, 1790)   ( AHC 20393 View Materials ); 2 fragmented specs from small intestine, New South Wales, Taronga Zoo (Sydney), Mar. 2000, Karie Rose leg., host: Strepera versicolor (Latham, 1801)   ( AHC 28975 View Materials ); 3 specs, New South Wales, Rydal, 33°30′ S, 150°0′ E, 4 Feb. 1906, Moreau leg. ( AHC 36526 View Materials ).

Hosts

Strepera graculina (Shaw, 1790)   and Strepera versicolor (Latham, 1801)   ( Artamidae   , Passeriformes   ).

Description

This material is very similar to C. adelaidae   described above, in most of its morpho-anatomical characters. A clear difference lies however in the shape and size of copulatory organs. While the cirrussac of C. adelaidae   is short and globular, it is much more elongated and cylindrical here, always clearly crossing the excretory canals and 70% longer, reaching 155–193 × 30–40 (176 × 36, n = 20). Another discriminating character is the presence of a massive terminal vaginal sphincter, which is absent in C. adelaidae   . Hooks are 23–25 (24, n = 9) and 22–24 (22.5, n = 9) long ( Fig. 41 View Figs 39–41. 39 ). The material is however macerated and difficult to interpret, and it is not possible to associate rostellar hook counts and other measurements to specimens for which anatomy is available. The few available specimens from AHC 36526 View Materials include some long ones (up to 39.2 mm), including one with a complete scolex (scolex diameter 525, suckers diameter 200–220, about 88 hooks). A vaginal sphincter is present and cirrus-sacs are of a similar shape as C. fieldingi   but larger (235–300 × 38–65).

Globally, this material corresponds to the description of C. fieldingi   from Cracticus destructor   [= C. torquatus   ] as described by Maplestone & Southwell (1923) and observed by ourselves (see above). It should, however, be noted that C. fieldingi   has not only been described in a different host, but also from a locality in Queensland which is some 1500 km north of the New South Wales stations considered here. The available specimens do not allow for a detailed study, but the variability observed in our different samples suggest a possible diversification of Cracticotaenia   in the Artamidae   .

T

Tavera, Department of Geology and Geophysics