Lecanicephaloidea
Lecanicephaloidea is an order of tapeworms of the subclass Cestoda. Species in the order consist of intestinal parasites of elasmobranch fishes.
Anatomy
The order is distinguished in that the scolex consists of two parts. The lower half forms a neck bearing four small suckers. The upper half is either globular or tentacle-bearing, and shows glandular structures.
The anatomy of the order is similar to that of the Proteocephaloidea.
Taxonomy
The order currently contains the following families, according to WoRMS:
- Aberrapecidae Jensen, Caira, Cielocha, Littlewood & Waeschenbach, 2016
- Cephalobothriidae Pintner, 1928
- Eniochobothriidae Jensen, Caira, Cielocha, Littlewood & Waeschenbach, 2016
- Lecanicephalidae Braun, 1900
- Paraberrapecidae Jensen, Caira, Cielocha, Littlewood & Waeschenbach, 2016
- Polypocephalidae Meggitt, 1924
- Tetragonocephalidae Yamaguti, 1959
- Zanobatocestidae Jensen, Caira, Cielocha, Littlewood & Waeschenbach, 2016
Additionally, the order contains the following accepted incertae sedis genera:
- Corrugatocephalum Caira, Jensen & Yamane, 1997
- Healyum Jensen, 2001
- Quadcuspibothrium Jensen, 2001
The order additionally contains several genera that are considered to be taxa inquirenda:
- Calycobothrium Stiles & Hassall, 1912
- Kystocephalus Shipley & Hornell, 1906
- Sephenicephalum Shinde, Sarwade & Jadhav, 1980 or 1982
- Staurobothrium Shipley & Hornell, 1905
- Trygonicephalum Shinde & Jadhav, 1985