Global Cestode DatabaseCestode Scientific Name
| Species ID | 1878 |
|---|---|
| Order | Lecanicephalidea |
| Family | Cephalobothriidae |
| Subfamily | |
| Genus | Tylocephalum |
| Species | bonasum |
| Authority | Campbell & Williams, 1984 |
| Taxonomic Status | Valid |
| Valid Name | |
| Synonyms | |
| Genus Record | No |
| Type Species | No |
| Verified | No |
| Verified By | |
| Citation(s) |
Campbell, R. A. and A. D. Williams. 1984. Tylocephalum Linton, 1890 (Cestoda: Lecanicephalidea) from the cownose ray, Rhinoptera bonasus (Mitchill, 1815) with a dicussion of its validity and systematic relationships. Proceedings of the Helminthological Society of Washington 51: 121-134. (112) Download PDF |
| Redescription | |
| Scientific Name Notes |
Record Data
| Date (MM/DD/YYYY) | Action | User Name |
|---|---|---|
| 09/09/2006 | Created | K. Jensen , R. Tracy |
| 06/18/2014 | Modified | |
| 01/06/2016 | Modified | K. Jensen |
| 05/17/2016 | Modified | B. Barbeau |
| 06/09/2016 | Modified | K. Jensen |
Type Host
| Host Class | |||||||
|---|---|---|---|---|---|---|---|
| Host Order | Myliobatiformes | ||||||
| Host Family | Rhinopteridae | ||||||
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Type Host (Literal) |
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Type Host (Valid) |
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| Additional Host(s) | |||||||
| Site in Host | spiral intestine | ||||||
| Host Notes |
Type Locality
| Country | U.S.A. |
|---|---|
| Body of Water | |
| Island(s) | |
| City/Region | Sakonnet Point, Rhode Island |
| Coordinates | |
| DD Latitude | |
| DD Longitude | |
| Additional Localities | |
| Locality Notes |
Specimens
| Type Material | USNPC No. 77633 (holotype) USNPC No. 77634 (two paratypes) |
|---|---|
| Total Number of Type Specimens | Based on 7 specimens, 6 measured |
| Voucher Material | |
| Specimen Notes |
Data are given as in original description unless otherwise indicated.
FIGURES 4-7. Tylocephalum bonasum n. sp. 4. Entire worm. Note presence of neck; early mature segments are rectangular in cross section, older segments oval in cross seciton. 5. Scolex, dorsoventral view (holotype). 6. Scolex, apical view (paratype). 7. Scolex, apical view (paratype). Note similarity to Hexacanalis Perrenoud, 1931. M, metoporhynchus; CO, collar; PB, pars basalis.
FIGURES 15-20. Reproductive system of Tylocephalum bonasum sp. n. 15-19. Transverse sections of mature segment. All sections drawn to same scale. 15. Anterior to cirrus sac. 16. Through genital atrium. 17. Just posterior to cirrus sac. 18. Through proximal end of uterus. 19. Through ovary. 20. Schematic diagram of reproductive system (dorsal view) reconstyructed with overlays of frontal and transverse sections. Abbriviations: C, cirrus; GA, genital atrium; LM, longitudinal muscle; MG, Mehlis’ galnd; ORC, osmoregualtory canal; OV, ovary; SR, seminal receptacle; SV, seminal vesicle; T, testis; U, uterus; UD, uterine duct; UP, uterine pore; V, vagina; VT, vitellaria; VTD, vitelline duct. 
FIGURE 23 & 24. 23. Scolex, T. bonasum. Note everted metoporhynchus and basl collar (arrows). 24. Sagittal section of T. bonasum in situ. Note embedded metoporhynchus and basal collar (arrow). 
USNPC No. 77634 (1B), paratype (1 of 3 slides of this specimen) 
USNPC No. 77634, paratype, scolex 
USNPC No. 77634, paratype (3B), terminal segment Best viewed in Firefox
