Cestode Scientific Name
| Species ID | 14194 |
|---|---|
| Order | Rhinebothriidea |
| Family | Escherbothriidae |
| Subfamily | |
| Genus | Semiorbiseptum |
| Species | mariae |
| Authority | Franzese & Ivanov, 2020 |
| Taxonomic Status | Valid |
| Valid Name | |
| Synonyms | |
| Genus Record | No |
| Type Species | Yes |
| 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) | Isla de los Estados |
| City/Region | Tierra del Fuego |
| Coordinates | 54° 30'S, 65° 13'W |
| DD Latitude | |
| DD Longitude | |
| Additional Localities | Coastal waters off Rio Grande, Tierra del Fuego Province (53° 34' S, 66° 32' W) and off Miramar, Buenos Aires Province (39° 34' S, 56° 16' W) |
| Locality Notes | from coastal waters off Isla de los Estados |
Specimens
| Type Material | MACN-Pa 701 (holotype, whole worm); MACN-Pa 702/1-4, 703, 704/1-13, 705 (paratypes); IPCAS C-836/1 (paratypes) |
|---|---|
| Total Number of Type Specimens | 30 |
| Voucher Material | |
| Specimen Notes | paratypes include 12 entire worms, 6 detached proglottids, 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 2. Semiorbiseptum mariae sp. nov. from Psammobatis rudis. A. entire worm (holotype MACN-Pa 701); B. scolex (paratype MACN-Pa 704/1); C. bothridium, distal surface; D. terminal mature proglottid (paratype MACN-Pa 702/1); E. detail of the oötype region of a terminal mature proglottid (paratype MACN-Pa 702/1); F. detail of terminal genitalia of a terminal mature proglottid (paratype MACN-Pa 702/1); G. egg. Abbreviations: cs. cirrus sac; mg. Mehlis’ gland; oc. oocapt; od. oviduct;
ov. ovary; t. testes; ut. uterus; vf. vitelline follicle; vg. vagina; vd. vas deferens; vod. ventral osmorregulatory duct. ▲loculi of
the anterior region; * loculi of the central region; ● loculi of the posterior region
FIGURE 5. Semiorbiseptum mariae sp. nov. from Psammobatis rudis, cross sections of a terminal mature proglottid (paratype MACN-Pa 704/13). 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; od. oviduct; ov. ovary; t. testes; ut. uterus; vd. vas deferens; vf. vitelline follicle; vg. vagina; vod. ventral osmorregulatory duct
FIGURE 4. Semiorbiseptum mariae sp. nov. from Psammobatis rudis, septal musculature of bothridium. A. longitudinal section of bothridium (paratype MACN-Pa 702/3); B. light micrographs of bothridium (paratype MACN-Pa 703); C. transverse section of bothridium (paratype MACN-Pa 702/4). 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 3. Semiorbiseptum mariae sp. nov. from Psammobatis rudis, scanning electron micrographs. A. scolex, small letters indicate locations of details shown in figures 3B-G; B. distal bothridial surface; C. detail of bothridial rim; D. proximal bothridial surface; E. surface of the apex of the scolex; F. surface of a stalk; G. surface of the cephalic peduncle; H. surface of
a terminal mature proglottid. 

