Taxonomic revision of the genus Glypthelmins Stafford, 1905 (Platyhelminthes: Digenea: Plagiorchiida), parasites of anurans in the AmericasAuthorLeón, Pérez-Ponce DetextZootaxa20081882145journal article10.5281/zenodo.18421943bdd1b2-1689-4c52-a26d-a1d9c20178e41175-5326184219Glypthelmins shastaiIngles, 1936
(
Fig. 16
)
Synonyms
Glypthelmins shastai
Ingles, 1936: 81
–82, Plate
XVI,
Fig. 1. (Description);
Glypthelmins quieta
, Rankin
(1944: 31, 41)
[Synonymy
G
.
shastai
with
G. quieta
];
Margeana
shastai
,
Cheng (1959: 80, 82– 84)
Plate 3,
Fig. 1
[Re-establishment of the genus
Margeana
and transference of
G
.
shastai
to this genus];
Glypthelmins linguatula
,
Nasir & Diaz (1970: 263)
[Sinonimizes
G
.
shastai
with
G. l i n - guatula
].
FIGURE 16.
Mature specimen of
Glypthelmins shastai
Ingles, 1936
, ventral view ex
Bufo boreas
, California, U.S.A. (USNPC 8925). Scale bar = 0.3 mm.
Taxonomic summaryType-host:Bufo boreas
.
Habitat:
Intestine.
Type-locality:
Glenburn, Shasta County, California
U.S.A.Type
specimens deposition:
USNPC 8925.
Diagnosis:
This species possess a cirrus pouch that is straight and larger than those present in the other species. Additionally, pharynx is smaller or equal to the ventral sucker, testes oblique, uterus intercaecal, and vitelline follicles distributed from the level of the genital pore to the post-testicular region, and are not confluent.
Description:
Body oval to elongated, with round posterior and anterior ends. Scale-like spines present on body tegument, from the level of oral sucker to the posterior third of body. Oral sucker subterminal and rounded. Ventral sucker rounded, smaller than oral sucker, preequatorial. Oral sucker/ventral sucker diameter ratio 1:0.75. Mouth opens in the middle of oral sucker. Prepharynx short. Pharynx small, muscular, ovoid, surrounded by small medial glands. Oesophagus long, surrounded by gland cells. Caeca narrow, and extends posteriorly to almost reach the end of body. Testes oval, with smooth borders, contiguous, oblique, and located at mid-level of body. Right testis slightly anterior to left testis, overlapping slightly the ceca. Cirrus pouch welldeveloped, large, straight, dorsal to ventral sucker, containing a bi-partite seminal vesicle, prostatic gland and a long and unarmed cirrus. Cirrus opening into the genital pore is located between the anterior border of the ventral sucker and caecal bifurcation. The ovary rounded to oval, located sinistrally to the ventral sucker. Seminal receptacle almost rounded, and located between the ovary and right testis. Uterus coiled, entirely intercaecal. Uterine loops transversally arranged, extending posteriorly to the end of body. No uterine loops are found in the pre-testicular region. In the testicular region uterus is ventral to testes. Muscular metraterm dorsal to cirrus pouch, slightly curved, opens into the genital pore. Vitelline gland follicular, and the follicles distributed in two fields along the caeca, from the level of the genital pore to the region between the posterior end of testes and the end of caeca. Follicles in the intercaecal region are located dorsally and ventrally to testes, but are not confluent. Eggs operculated, 41–46 µm long by 14–17 µm wide. Excretory vesicle “I” shaped extending to the level of left testis. Excretory pore terminal.
Host, geographic distribution and specimen depositionBufo boreas
:
Canada
: Gorge Creek, R. B. Miller Biological Station;
60 km
SW of Calgary, Alberta; Nelson, British
Columbia
, (Holmes, pers. comm
in
O´
Grady, 1987
).
U.S.A.
: Shasta County, California (
Ingles, 1936: 81
); “
U.S.A.
” (
Walton 1938: 8
). Specimen deposition: USNPC 8925; HWML 23661.