Global Cestode DatabaseCestode Scientific Name
| Species ID | 12750 |
|---|---|
| Order | Diphyllidea |
| Family | |
| Subfamily | |
| Genus | Halysioncum |
| Species | hoffmanorum |
| Authority | (Tyler, 2001) Caira, Marques, Jensen, Kuchta & Ivanov, 2013 |
| Taxonomic Status | Valid |
| Valid Name | |
| Synonyms | |
| Genus Record | No |
| Type Species | No |
| Verified | No |
| Verified By | V.A. Ivanov, R. Kuchta |
| Citation(s) |
Tyler, G. A. 2001. Diphyllidean cestodes of the Gulf of California, Mexico with description of two new species of Echinobothrium (Cestoda: Diphyllidea). Journal of Parasitology 87(1): 173-184. (4464) Download PDFCaira, J. N., F. P. L. Marques, K. Jensen, R. Kuchta, and V. Ivanov. 2013. Phylogenetic analysis and reconfiguration of genera in the cestode order Diphyllidea. International Journal for Parasitology 43: 621-639. (6204) Download PDF |
| Redescription | |
| Scientific Name Notes |
Record Data
| Date (MM/DD/YYYY) | Action | User Name |
|---|---|---|
| 10/18/2013 | Created | B. Barbeau |
| 08/20/2014 | Modified | |
| 02/03/2016 | Modified | K. Mojica |
| 02/03/2016 | Modified | J. Caira |
| 03/23/2016 | Modified | B. Barbeau |
| 06/17/2016 | Modified | B. Barbeau |
| 08/23/2016 | Modified | R. Kuchta |
Type Host
| Host Class | Chondrichthyes | ||||||
|---|---|---|---|---|---|---|---|
| Host Order | Myliobatiformes | ||||||
| Host Family | Urotrygonidae | ||||||
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Type Host (Literal) |
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Type Host (Valid) |
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| Additional Host(s) | Urobatis halleri, Urobatis concentricus | ||||||
| Site in Host | spiral intestine | ||||||
| Host Notes |
Type Locality
| Country | México |
|---|---|
| Body of Water | Gulf of California |
| Island(s) | Isla San Esteban |
| City/Region | |
| Coordinates | |
| DD Latitude | 28° 42'N |
| DD Longitude | 112° 36'W |
| Additional Localities | San Francisquito, Baja California, Mexico (28° 25'N, 112° 52'W), Punta Arenas, Baja California Sur, Mexico (24° 04'N, 109° 50'W) |
| Locality Notes |
Specimens
| Type Material | Holotype: CNHE no. 3916. Paratypes: CNHE no. 3917, USNPC no. 090148.00, LRP nos. 2022–2037 (from U. halleri), CNHE 3918–3919, USNPC nos. 090146.00–090147.00, HWML no. 15490, LRP nos. 2038–2050 (from U. maculatus) |
|---|---|
| Total Number of Type Specimens | based on 41 mature worms |
| Voucher Material | |
| Specimen Notes |
Data are given as in original description unless otherwise indicated.
FIGURES 1–10. Echinobothrium hoffmanorum n. sp. 1. Whole worm. 2. Scolex. 3. Detail of 1 dorsoventral group of apical hooks. 4. Detail of
1 group of lateral hooklets. 5. Detail of cephalic peduncle spine. 6. Mature segment, rotated slightly, revealing left side and dorsal surface. 7. Cross section through segment at level indicated by arrow at 7 in Figure 6. 8. Cross section through segment at level indicated by arrow at 8 in Figure 6. 9. Lateral view of terminal genitalia. 10. Eggs. AH, apical hook; C, cirrus; CP, cephalic peduncle; GP, genital pore; LH, lateral hooklets; MG, Mehlis’ gland; VG, vagina. 
FIGURE 20. Summary of distribution of various microtrich forms on scolex of Echinobothrium hoffmanorum n. sp. All microtriches are
drawn to same scale. 
FIGURES 11–19. Scanning electron micrographs of Echinobothrium hoffmanorum n. sp. 11. Scolex proper. 12. Apex of scolex. 13. Proximal bothrial surface. 14. Distal bothrial surfaces. 15. Distal bothrial surfaces. 16. Medial distal bothrial surface. 17. Lateral portion of scolex proper. 18. Enlarged view of lateral surface of scolex proper, showing cilium. 19. Strobila. Scale bar in Figure 11, 50 um. Scale bars in Figures 12, 15, 18, 500 nm. Scale bar in Figures 13, 14, 16, 17, 19, 1 µm. 
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