Global Cestode DatabaseCestode Scientific Name
| Species ID | 4680 |
|---|---|
| Order | Trypanorhyncha |
| Family | Eutetrarhynchidae |
| Subfamily | |
| Genus | Didymorhynchus |
| Species | southwelli |
| Authority | Beveridge & Campbell, 1988 |
| Taxonomic Status | Valid |
| Valid Name | |
| Synonyms | Rhynchobothrium rossii Southwell, 1912, in part (as per Beveridge & Campbell, 1988) |
| Genus Record | No |
| Type Species | Yes |
| Verified | Yes |
| Verified By | I. Beveridge |
| Citation(s) |
Beveridge, I. and R. A. Campbell. 1988. A review of the Tetrarhynchobothriidae Dollfus, 1969 (Cestoda: Trypanorhyncha) with descriptions of two new genera, Didymorhynchus and Zygorhynchus. Systematic Parasitology 12: 29-Mar. (4283) Download PDF |
| Redescription |
Beveridge, I. 2008. Redescriptions of species of Tetrarhynchobothrium Diesing, 1850 and Didymorhynchus Beveridge & Campbell, 1988 (Cestoda: Trypanorhyncha), with the description of Zygorhynchus borneensis n. sp.. Systematic Parasitology 69: 75–88. (4522) Download PDF |
| Scientific Name Notes | Campbell & Beveridge (1994) placed this genus in the Tetrarhynchobothriidae. Redescribed by Beveridge (2008) |
Record Data
| Date (MM/DD/YYYY) | Action | User Name |
|---|---|---|
| 11/30/-0001 | Created | I. Beveridge |
| 05/13/2015 | Modified | |
| 06/04/2015 | Modified | I. Beveridge |
| 06/08/2015 | Modified | I. Beveridge |
| 06/01/2017 | Modified | K. Herzog |
| 07/27/2017 | Modified | K. Jensen |
| 10/04/2018 | Modified | K. Herzog |
Type Host
| Host Class | Elasmobranchii | ||||||
|---|---|---|---|---|---|---|---|
| Host Order | Myliobatiformes | ||||||
| Host Family | Aetobatidae | ||||||
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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 | Rhynchobatus djiddensis (see Beveridge & Campbell, 1988) |
Type Locality
| Country | Sri Lanka |
|---|---|
| Body of Water | Indian Ocean |
| Island(s) | |
| City/Region | Ceylon Pearl Banks |
| Coordinates | |
| DD Latitude | |
| DD Longitude | |
| Additional Localities | |
| Locality Notes |
Specimens
| Type Material | BMNH 1977.11.4.1 (holotype and paratype) |
|---|---|
| Total Number of Type Specimens | 2 specimens on 5 slides (Beveridge & Campbell, 1988) |
| Voucher Material | BMNH 1977.11.4.51 (voucher), one specimen from Rhynchobatus djiddensis (Beveridge & Campbell, 1988) |
| Specimen Notes |
Data are given as in original description unless otherwise indicated.
Figs 30-38. Didymorhynchus southwelli n. g., n. sp. 30. Scolex; 31. Base of retracted tentacle showing homeoacanthous nature of armature; 32. Hook; 33. Mature segment; 34. Transverse section of segment through uterine pore and cirrus sac; 35. Transverse section through segment showing lobes of uterus; 36. Egg; 37. Cirrus sac; 38. Uterus and ovary. Scale lines: Figs 30, 31, 33-35, 37,38, 0.1 mm; Figs 32, 36, 0.01 mm. Abbreviations: CS, cirrus sac; M, longitudinal muscle; O, ovary; T, testis; U, uterus; UD, uterine duct; UP, uterine pore; V, vagina; VOC, ventral osmoregulatory canal; VF, vitelline follicle. 
Figs. 25–27
Didymorhynchus southwelli
Beveridge & Campbell,
1988, tentacular armature.
25. Basal armature,
antibothrial surface, internal
surface on left hand side.
26. Metabasal armature,
orientation of tentacle
uncertain. 27. Hook profiles
from opposing surfaces of
metabasal armature of
tentacle. Scale-bars: 10 lm Best viewed in Firefox
