Heligmonella spira female
Super-family: Heligmosomoidea
Family: Heligmonellidae
Sub-family: Heligmonellinae
Synonymy:
= Viannella africana, Clapham, 1947
= Longistriata spira, Durette-Desset, 1969
Author and date : Mönnig, 1927
Parasite of Thryonomys swinderianus, Thryonomyidae, Mammalia.
Locality: South of Rhodesia, Kenya (South Africa)
Location: small intestine
Collection : collection of the departement of Parasitology, London school of Hygiene and tropical Medecine
Reference :
Mönnig, 1927. Tr royal society of south africa, 14:261-265 (personal reference N1631)
Clapham, 1947. Journal of Helminthology, 22:29-36
Durette-Desset, 1969. Annales de parasitologie humaine et comparée, 44: 37-46. (personal reference n° 23)
Thryonomys swinderianus (host)
Anterior part of Heligmonella spira female, left lateral view
Synlophe of Heligmonella spira female
Reproductive tract of Heligmonella spira female, ventral view.
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Classification
Generality of the parasite
Whole body
- Length of the body : 6001 to 7000 µm ; 7001 to 8000 µm ; 8001 to 9000 µm
- Width of the nematode at midbody : 101 to 125 µm
Cephalic characters
- Presence of cephalic vesicle : Yes
- Width of the cephalic vesicle (in middle) : 31 to 40 µm ; 41 to 50 µm
- Number of internal labial papillae : ?
- Number of external labial papillae : ?
- Presence of cephalic papillae : ?
- Length of the cephalic vesicle : 81 to 90 µm
Anterior part
- Position of the nervous ring from the anterior end : 251 to 300 µm
- Position of the excretory pore from the anterior end : 401 to 450 µm
- Position of deirides from the anterior end : 401 to 450 µm
- Length of the oesophagus : 451 to 500 µm
- Ratio length of the oesophagus over the total length : 6 to 10%
- Excretory glands : Not visible
Synlophe at midbody
- Number of cuticular ridges at midbody : 6 to 10
- Size of ridges : 1 to 10 µm ; 11 to 20 µm ; 21to 30 µm ; 31 to 40 µm
- Axis of orientation of the synlophe : 1 axis
- Right axis : non applicable
- Left axis : non applicable
- Appearance of ridges : Behind cephalic vesicle
- Nature of the ridges : Continuous ridges ; Longitudinal ridges
- Number of dorsal ridges at midbody : 1 to 5
- Disappearance of the cuticular ridges in the female : Before reaching the vulva
- Disappearance of the cuticular ridges in the male : non applicable
- Only a general axis : 31 to 40°
- Number of ventral ridges at midbody : 1 to 5
- Presence of a gradient of size of the cuticular ridges : Gradient on both dorsal and ventral faces
Reproductive tract of the female
- Presence of egg : Yes
- Length of egg : 61 to70µm ; 71 to 80 µm ; 81 to 90 µm
- Width of egg : 41 to 45 µm ; 46 to 50 µm
- Number of egg : ?
- Length of vestibule : 151 to 200 µm
- Sex of the nematode : Female
- Length of vagina vera : 51 to 60 µm
- Length of the tail : 41 to 60 µm
- Position of the vulva from the posterior end : 51 to 100 µm
- Length of anterior sphincter : 61 to 70 µm
- Length of anterior uterus : ?
- Presence caudal pointed tail : Yes
- Length of anterior infundibulum : 151 to 175 µm
Reproductive tract of the male
- Sex of the nematode : Female
- Height of the division of the dorsal ray : non applicable
- Length of the rays 9 in ratio to the rays 10 : non applicable
- Diagram of rays 2 to 6 (left lobe) : non applicable
- Disposition of types of bursal arrangements in lateral lobes : non applicable
- Length of rays 2 to 6 : non applicable
- Birth of rays 8 : non applicable
- Length of the rigth spicule : non applicable
- Length of the left spicule : non applicable
- Shape of the spicules : non applicable
- Number of tips of the spicules : non applicable
- Shape of the genital cone : non applicable
- Length of genital cone : non applicable
- Presence of papilla 0 on anterior lip of genital cone : non applicable
- Presence of papillae 7 on posterior lip of genital cone : non applicable
- Presence of gubernaculum : non applicable
- Width of gubernaculum : non applicable
- Asymmetry of the caudal bursa : non applicable
- Height of the asymmetry : non applicable
- Width of asymmetry : non applicable
- Diagram of rays 2 to 6 (right lobe) : non applicable
- Dorsal lobe visible : non applicable
- Diagram of basic pattern of the caudal bursa (lobes left and right are symmetric) : non applicable
- Tendency of the diagram ( lobes left and right are symmetric) : non applicable
- Tendency of diagram (left lobe) : non applicable
- Tendency of diagram (right lobe) : non applicable
- Presence of the prebursal rays (= rays 1) : non applicable
- Approaching rays 5 to 6 : non applicable
- Ratio length between ray 8 and dorsal ray : non applicable
- Position of the rays 9 : non applicable
- Form of gubernaculum : non applicable
- Length of gubernaculum : non applicable
- Symmetry of the caudal bursa : non applicable