Cestode Scientific Name
| Species ID | 14195 |
|---|---|
| Order | Rhinebothriidea |
| Family | Escherbothriidae |
| Subfamily | |
| Genus | Semiorbiseptum |
| Species | alfredoi |
| Authority | Franzese & Ivanov, 2020 |
| Taxonomic Status | Valid |
| Valid Name | |
| Synonyms | |
| Genus Record | No |
| Type Species | No |
| Verified | No |
| Verified By | |
| Citation(s) |
Franzese, S. and V. A. Ivanov. 2020. A new genus of Rhinebothriidea from species of Psammobatis (Rajiformes: Arhynchobatidae) off Argentina. Zootaxa 4803(2): 355-372. (7199) Download PDF |
| Redescription | |
| Scientific Name Notes |
Record Data
| Date (MM/DD/YYYY) | Action | User Name |
|---|---|---|
| 10/05/2020 | Created | B. Barbeau |
| 10/05/2020 | Modified | B. Barbeau |
| 11/06/2020 | Modified | B. Barbeau |
| 09/07/2022 | Modified | V. Bueno |
| 04/09/2024 | Modified | V. Bueno |
Type Host
| Host Class | Elasmobranchii | ||||||
|---|---|---|---|---|---|---|---|
| Host Order | Rajiformes | ||||||
| Host Family | Arhynchobatidae | ||||||
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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 | Argentina |
|---|---|
| Body of Water | |
| Island(s) | |
| City/Region | Buenos Aires Province, off Mar de Ajó |
| Coordinates | 36° 34'S, 54° 39'W |
| DD Latitude | |
| DD Longitude | |
| Additional Localities | Coastal waters off Pinamar, Buenos Aires Province (37°12’S, 54°53’W) and off Caleta Olivia, Santa Cruz Province (46°23’S, 64°20’W). |
| Locality Notes |
Specimens
| Type Material | MACN-Pa 706 (holotype, whole worm); MACN-Pa 707/1-5, 708/1-3, 709, 710, 711/1-2 (paratypes); IPCAS C-837/1 (paratypes) |
|---|---|
| Total Number of Type Specimens | 16 |
| Voucher Material | |
| Specimen Notes | paratypes include 13 entire worms, histological sections of 1 mature proglottid, and histological sections of 2 scoleces |
Data are given as in original description unless otherwise indicated.
Global Cestode Database
FIGURE 6. Semiorbiseptum alfredoi sp. nov. from Psammobatis normani. A. entire worm (holotype MACN-Pa 706); B. scolex (holotype MACN-Pa 706); C. bothridium, distal surface; D. terminal mature proglottid (paratype MACN-Pa 708/1); E. detail of terminal genitalia of a terminal mature proglottid (paratype MACN-Pa 708/1); F. detail of oötype region of a terminal mature
proglottid (paratype MACN-Pa 708/1). Abbreviations: cs. cirrus sac; mg. Mehlis’ gland; oc. oocapt; od. oviduct; ov. ovary; t. testes; ud. utero duct; ut. uterus; vd. vas deferens; vf. vitelline follicle; vg. vagina; vod. ventral osmorregulatory duct. ▲loculi of the anterior region; * loculi of the central region; ● loculi of the posterior region
FIGURE 9. Semiorbiseptum alfredoi sp. nov. from Psammobatis normani, cross sections of a terminal mature proglottid (paratype MACN-Pa 708/3). A. cross section at level of testes, anterior to cirrus sac; B. cross section at level of the genital pore; C. cross section at level of the cirrus sac; D. cross section at level of the ovarian isthmus. Abbreviations: cs. cirrus sac; dod. dorsal osmorregulatory duct; ov. ovary; t. testes; ut. uterus; vd. vas deferens; vf. vitelline follicle; vg. vagina; vod. ventral osmorregulatory duct
FIGURE 8. Semiorbiseptum alfredoi sp. nov. from Psammobatis normani, septal musculature of bothridium. A. longitudinal section of bothridium (paratype MACN-Pa 707/4); B. light micrographs of bothridium (paratype MACN-Pa 707/3); C. transverse
section of bothridium (paratype MACN-Pa 707/5). Abbreviations: l. loculus; lmb. longitudinal muscle bundle; ls. Longitudinal septum; rm. radial muscle; ss. semicircular septum; tg. triangular gap; tmb. transverse muscle bundles; ts. transverse septum
FIGURE 7. Semiorbiseptum alfredoi sp. nov. from Psammobatis normani, scanning electron micrographs. A. scolex, small letters indicate locations of details shown in figures 7C-G; B. distal bothridial surface; C. detail of distal bothridial surface; D. botrhidial rim; E. proximal bothridial surface; F. surface of the cephalic peduncle; G. surface of a stalk; H. surface of a terminal mature proglottid. 

