Heligmonella spira male
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).
Caudal bursa of Heligmonella spira male, ventral view.
other specimen ; caudal bursa of Heligmonella spira male, ventral view.
Classification
Generality of the parasite
Whole body
- Length of the body : 4001 to 5000 µm ; 5001 to 6000 µm ; 6001 to 7000 µm
- Width of the nematode at midbody : 76 to 100 µm
Cephalic characters
- Presence of cephalic vesicle : Yes
- Width of the cephalic vesicle (in middle) : 21 to 30 µm ; 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 : 51 to 60 µm ; 61 to 70 µm ; 71 to 80 µm ; 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% ; 11 to 15%
- 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 : non applicable
- Disappearance of the cuticular ridges in the male : At the level of the caudal bursa
- 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 : non applicable
- Length of egg : non applicable
- Width of egg : non applicable
- Number of egg : non applicable
- Length of vestibule : non applicable
- Sex of the nematode : Male
- Length of vagina vera : non applicable
- Length of the tail : non applicable
- Position of the vulva from the posterior end : non applicable
- Length of anterior sphincter : non applicable
- Length of anterior uterus : non applicable
- Presence caudal pointed tail : non applicable
- Length of anterior infundibulum : non applicable
Reproductive tract of the male
- Sex of the nematode : Male
- Height of the division of the dorsal ray : Posterior third
- Length of the rays 9 in ratio to the rays 10 : 9<10
- Diagram of rays 2 to 6 (left lobe) : non applicable
- Disposition of types of bursal arrangements in lateral lobes : similar diagram left ant right
- Length of rays 2 to 6 : 2<3 ; 3<4 ; 4>5 ; 5 = 6
- Birth of rays 8 : On thedorsal ray
- Length of the rigth spicule : 301 to 400 µm
- Length of the left spicule : 301 to 400 µm
- Shape of the spicules : Sharp
- Number of tips of the spicules : 1
- Shape of the genital cone : Large
- Length of genital cone : 26 to 50 µm
- Presence of papilla 0 on anterior lip of genital cone : Yes
- Presence of papillae 7 on posterior lip of genital cone : No
- Presence of gubernaculum : Yes
- Width of gubernaculum : 11 to 20 µm
- Asymmetry of the caudal bursa : Left
- Height of the asymmetry : 151to 200 µm
- Width of asymmetry : 151 to 200 µm
- Diagram of rays 2 to 6 (right lobe) : non applicable
- Dorsal lobe visible : Indistinct
- Diagram of basic pattern of the caudal bursa (lobes left and right are symmetric) : Type 2-3
- Tendency of the diagram ( lobes left and right are symmetric) : Tendency 2-2-1
- Tendency of diagram (left lobe) : non applicable
- Tendency of diagram (right lobe) : non applicable
- Presence of the prebursal rays (= rays 1) : Yes
- Approaching rays 5 to 6 : No
-
Ratio length between ray 8 and dorsal ray : Dorsal ray = ray 8
; Dorsal ray
- Position of the rays 9 : After the division
- Form of gubernaculum : Well marked: oval form
- Length of gubernaculum : 31 to 40 µm ; 41 to 50 µm ; 51 to 60 µm
- Symmetry of the caudal bursa : Symmetric and asymmetric possible in the same species