Tricholinstowia maseri male
Super-family: Heligmosomoidea
Family: Heligmonellidae
Sub-family: Heligmonellinae
No synonymy
Author and date: Durette-Desset&Vaucher, 1974, n°57
Parasite of Scapanus orarius, Talpidae, Mammalia
Locality: Lake Tahkenitch, Oregon (Canada)
Location: not specified
Collection : In Muséum National d'histoire naturelle
Reference : Durette-Desset&Vaucher, 1974, n°57
Scapanus orarius (host)
Caudal bursa of Tricholinstowia maseri, ventral view.
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Classification
Generality of the parasite
Whole body
Cephalic characters
- Presence of cephalic vesicle : Yes
- Width of the cephalic vesicle (in middle) : 10 to 20 µm
- Number of internal labial papillae : ?
- Number of external labial papillae : ?
- Presence of cephalic papillae : ?
- Length of the cephalic vesicle : 41 to 50 µm
Anterior part
- Position of the nervous ring from the anterior end : 100 to 150 µm
- Position of the excretory pore from the anterior end : 151 to 200 µm
- Position of deirides from the anterior end : 151 to 200 µm
- Length of the oesophagus : 351 to 400 µm
- Ratio length of the oesophagus over the total length : 16 to 20%
- Excretory glands : ?
Synlophe at midbody
- Number of cuticular ridges at midbody : 16 to 20
- Size of ridges : ?
- Axis of orientation of the synlophe : ?
- Right axis : ?
- Left axis : ?
- Appearance of ridges : On the posterior edge of the cephalic vesicle
- Nature of the ridges : Longitudinal ridges
- Number of dorsal ridges at midbody : 6 to 10
- Disappearance of the cuticular ridges in the female : non applicable
- Disappearance of the cuticular ridges in the male : ?
- Only a general axis : ?
- Number of ventral ridges at midbody : 6 to 10
- 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 : 101 to 200 µm
- Length of the left spicule : 101 to 200 µm
- Shape of the spicules : Sharp ; Winged
- Number of tips of the spicules : 2
- Shape of the genital cone : Triangular
- Length of genital cone : <25 µm
- Presence of papilla 0 on anterior lip of genital cone : No
- Presence of papillae 7 on posterior lip of genital cone : No
- Presence of gubernaculum : No
- 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 : Distinct
- Diagram of basic pattern of the caudal bursa (lobes left and right are symmetric) : Type 2-1-2
- Tendency of the diagram ( lobes left and right are symmetric) : Tendency 3-2
- 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 : Yes
- Ratio length between ray 8 and dorsal ray : Dorsal ray = ray 8
- Position of the rays 9 : Before the division
- Form of gubernaculum : non applicable
- Length of gubernaculum : non applicable
- Symmetry of the caudal bursa : Symmetric