Paragymnophallus odhneri gen. n., sp. n. (Trematoda: Gymnophallidae) for Gymnophallus somateriae sensu Odhner (1900, 1905)

1973 ◽  
Vol 51 (8) ◽  
pp. 807-810 ◽  
Author(s):  
Hilda Lei Ching
Keyword(s):  
New Species ◽  
Seminal Vesicle ◽  
Ventral Sucker ◽  
Genital Pore ◽  
Egg Size ◽  
New Genus ◽  
The Body ◽  
Intestinal Bifurcation ◽  
Somateria Spectabilis ◽  
Excretory Bladder

Odhner's specimens of Gymnophallus somateriae were studied and are assigned to a new genus and new species because of the wide genital pore located between the ventral sucker and the intestinal bifurcation. Paragymnophallus odhneri also differs from G. somateriae as described by Levinsen (1881) and Ching (1973), in the body spination, 2:1 sucker ratio, nature of the vitellaria, and the egg size. G. somateriae reported by Ryzhikov et al. (1966) from Somateria spectabilis in Chutkova is considered to be P. odhneri because of the checkerboard arrangement of spines, 2:1 sucker ratio, and small eggs. Pending reexamination of the genital pore, G. bilis Brinkmann, 1956 and G. minor Ryzhikov, 1962 could belong to Paragymnophallus. The new genus, most similar to Gymnophallus in the bipartite seminal vesicle, follicular vitelline glands, and Y-shaped excretory bladder, differs in the location and size of the genital pore, larger sucker ratio, and large pharynx. The wide genital pore some distance from the ventral sucker and the large oral sucker are like that of Parvatrema but Parvatrema has a club-shaped seminal vesicle, minute body, compact vitellaria, and V-shaped excretory bladder. A key to the genera of Gymnophallidae is included.

Description of Gymnophallus somateriae (Levinsen, 1881) from Macoma inconspicua and diving ducks from Vancouver, Canada

1973 ◽  
Vol 51 (8) ◽  
pp. 801-806 ◽  
Author(s):  
Hilda Lei Ching
Keyword(s):  
New Species ◽  
Seminal Vesicle ◽  
Ventral Sucker ◽  
Genital Pore ◽  
Body Shape ◽  
New Genus ◽  
Distal Portion ◽  
The Body ◽  
Diving Ducks ◽  
Excretory Bladder

In the same clam host, the metacercaria of Gymnophallus somateriae differs from those of Lacunovermis conspicuus and Meiogymnophallus multigemmulus in the body shape and spination; small, irregular vitellaria; and lyre-shaped excretory bladder. The adult from diving ducks differs from Levinsen's description in the shorter posterior range of the uterus and shorter length of the eggs. The fusiform body, sucker ratio, location of the ventral sucker in the posterior third of the body, and bipartite seminal vesicle with large distal portion and smaller proximal portion are characteristic of the species. G. somateriae of Odhner (1900, 1905) belongs to a new genus and new species because of the size and location of the genital pore and will be described in the next paper. G. gibberosus Loos-Frank, 1971 is closely related to G. somateriae but has a ventral sucker in the middle third of the body, a uterus only in the anterior half of the body, and a proximal seminal vesicle smaller in diameter than the ventral sucker.

Thryssatrema hanumantharaoi n. gen., n. sp. (Digenea: Fellodistomidae) from the longjaw thryssa, Thryssa setirostris (Clupeiformes: Engraulidae), of the Visakhapatnam coast, Bay of Bengal

Zootaxa ◽  
2012 ◽  
Vol 3551 (1) ◽  
pp. 59 ◽  
Author(s):  
B. SAILAJA ◽  
ROKKAM MADHAVI
Keyword(s):  
Seminal Vesicle ◽  
Ventral Sucker ◽  
Bay Of Bengal ◽  
Genital Pore ◽  
Body Shape ◽  
New Genus ◽  
The Body ◽  
Posterior Half ◽  
Excretory Bladder ◽  
Visakhapatnam Coast

Thryssatrema hanumantharaoi n. sp., representing a new genus of fellodistomid digenean, is described from a clupeoidfish, the longjaw thryssa, Thryssa setirostris, collected from the coast of Visakhapatnam, Bay of Bengal. The new genusis characterized by possessing a combination of the following features: An elongate body; poorly developed suckers; twooval, symmetrical testes situated in the posterior half of the hindbody; a cirrus sac that extends posterior to the ventralsucker; a bipartite seminal vesicle; a median genital pore situated immediately anterior to the ventral sucker; a lobed,pretesticular ovary; uterine coils that fill the entire hindbody; small eggs, elliptical vitelline follicles forming two zonesanterolateral to the ovary; and a V-shaped excretory bladder. The new genus shows affinities to Prudhoeus and Elopsiumbut differs from the former in the body shape (elliptical versus oval), and by having poorly developed suckers, moreposteriorly located gonads and elliptical vitelline follicles arranged in two lateral zones in front of ovary. It differs fromElopsium mainly in the body shape (elliptical versus rounded) and distribution of vitelline follicles and in the V-shaped excretory bladder.

Fairfaxia-Lethrini, Gen Et Sp-Nov (Digenea, Opecoelidae), From Lethrinus-Chrysostomus Richardson From the Southern Great-Barrier-Reef

1989 ◽  
Vol 37 (1) ◽  
pp. 67 ◽  
Author(s):  
TH Cribb
Keyword(s):  
Great Barrier Reef ◽  
Ventral Sucker ◽  
Genital Pore ◽  
New Genus ◽  
Barrier Reef ◽  
Excretory Bladder

Fairfaxia lethrini, gen. et sp. nov., is described from the intestine of Lethrinus chrysostomus from the southern Great Barrier Reef. The new genus is characterised by its large ventral sucker which interrupts the vitelline fields, small cirrus pouch and median genital pore, short excretory bladder and small post-testicular field into which neither the vitelline follicles nor the caeca extend.

Trematodes from Red Sea fishes: Pachycreadium lethrini sp. nov. (Opecoelidae Ozaki, 1925) and Pseudometadena aegyptensis sp. nov. (Cryptogonimidae Ward, 1917), with a review of their genera

2006 ◽  
Vol 51 (3) ◽  
Author(s):  
Reda Hassanine
Keyword(s):  
Seminal Vesicle ◽  
Red Sea ◽  
Genital Pore ◽  
Egg Size ◽  
The Other ◽  
Intestinal Bifurcation ◽  
Anterior Border ◽  
South Sinai ◽  
The Right ◽  
Intestinal Trematodes

AbstractSpecimens of the fishes Lethrinus nebulosus Forsskål (Lethrinidae) and Diplodus noct Valenciennes (Sparidae) were caught in the Red Sea off the coast of Sharm El-Sheikh, South Sinai, Egypt. Ten (33%) and 12 (24%) of these fishes, respectively, were found to harbour intestinal trematodes. L. nebulosus was parasitised by Pachycreadium lethrini sp. nov. (Opecoelidae) and D. noct by Pseudometadena aegyptensis sp. nov. (Cryptogonimidae). P. lethrini sp. nov. is unique in having distinctly unequal testes, contiguous gonads arranged obliquely in the right side of hindbody and a small egg size. However, it differs from each of the other three species of the genus in several other features: from P. gastrocotylum (Manter, 1940) Manter, 1954 in having a smaller sucker ratio and vitelline follicles terminating anteriorly at the level of intestinal bifurcation; from P. carnosum (Rudolphi, 1819) Cortini et Ferretti, 1959 in having a smaller body, a smaller sucker ratio, a genital pore situated ventrally to the anterior border of pharynx, a pretesticular ovary and vitelline follicles extending anteriorly to the level of intestinal bifurcation; and from P. lerneri Sogandares-Bernal, 1959 in having a larger body, a smaller sucker ratio and an unlobed ovary. P. angolensis Aleshkina et Gaevskaya, 1985 is considered an invalid species in Pachycreadium. P. aegyptensis sp. nov. is similar to P. celebesensis Yamaguti, 1952, but mainly differs in having a larger pharynx, a much shorter oesophagus, extensive vitelline acini and a shorter seminal vesicle. Pachycreadium Manter, 1954 and Pseudometadena Yamaguti, 1952 are briefly reviewed.

Description of Neolepidapedoides subantarcticus sp. nov. (Digenea, Lepocreadiidae) from sub-Antarctic notothenioid fishes

2011 ◽  
Vol 56 (3) ◽  
Author(s):  
Witold Jeżewski ◽  
Krzysztof Zdzitowiecki ◽  
Zdzisław Laskowski
Keyword(s):  
New Species ◽  
Seminal Vesicle ◽  
The Body ◽  
Tierra Del Fuego ◽  
Intestinal Bifurcation ◽  
External Seminal Vesicle ◽  
Excretory Vesicle ◽  
Beagle Channel ◽  
Terminal Genitalia

AbstractNeolepidapedoides subantarcticus sp. nov. (Digenea, Lepocreadiidae) is reported from the intestine, mainly the jejunum, of fishes in the eastern mouth of the Beagle Channel and in the harbour of Ushuaia in the Beagle Channel (Tierra del Fuego, Argentina) at a depth 7–30 m. The typical host is Patagonotothen longipes, other hosts are P. tessellata, P. brevicauda and Champsocephalus esox. The male terminal genitalia indicates that the new species belongs to the genus Neolepidapedoides (Lepocreadiidae, Lepocreadiinae). The most important taxonomic features are the presence of eye-spots, the spined tegument, the “Opechona-type” cirrus-sac, the external seminal vesicle free in the parenchyma, the gonads arranged in tandem, the vitelline follicles extending from the level of the oesophagus in the forebody to the posterior end of the body and an I-shaped excretory vesicle reaching to the intestinal bifurcation and the absence of a pseudoesophagus. Ten previously described species differ from the N. subantarcticus sp. nov. mainly in the extent of the vitelline fields and length of the excretory vesicle which reaches into forebody.

scholarly journals A new species of Petasiger (Digenea, Echinostomatidae) parasitizing Podiceps major and Rollandia rolland (Aves, Podicipedidae) from Buenos Aires Province, Argentina

2010 ◽  
Vol 55 (3) ◽  
Author(s):  
Lía Lunaschi ◽  
Fabiana Drago
Keyword(s):  
New Species ◽  
Ventral Sucker ◽  
Excretory Pore ◽  
Genital Pore ◽  
Buenos Aires ◽  
First Record ◽  
The Body ◽  
Buenos Aires Province ◽  
Neotropical Species ◽  
A New Species

AbstractPetasiger argentinensis sp. nov. is described from material found in the intestine of the Great Grebe, Podiceps major (Boddaert) and the White-tufted Grebe, Rollandia rolland Quoy et Gaimard (Podicipediformes, Podicipedidae), from Argentina. The new species is characterized by the head collar armed with 19 spines and by the testes arranged in tandem. These characters are shared with only two Neotropical species of the genus, P. novemdecim Lutz, 1928 and P. combesi Zamparo, Overstreet et Brooks, 2005. Petasiger novemdecim differs from the new species in having a larger body, longer collar spines, larger eggs, a cirrus-sac of similar size to the ventral sucker and almost entirely anterior to it, and vitelline fields confluent ventrally posterior to the ventral sucker. P. combesi differs from the new species in most metrical characters, the shape of the body (antero-posteriorly elongate) and the location of the genital pore (dextral) and the excretory pore (dorsal). This is the first record of a member of the genus Petasiger parasitizing birds from Argentina.

A revision of the subfamily Haplorchinae Looss, 1899 (Trematoda: Heterophyidae): I. The Haplorchis group

Parasitology ◽  
1964 ◽  
Vol 54 (4) ◽  
pp. 601-676 ◽  
Author(s):  
J. C. Pearson
Keyword(s):  
Life History ◽  
Ventral Sucker ◽  
Genital Pore ◽  
History Data ◽  
Life History Data ◽  
The Family ◽  
Excretory Bladder

Earlier schemes of classification of the family Heterophyidae have been based in large part on such features as shape of body, presence of oral spines, number and position of testes, and distribution of vitellaria (Witenberg, 1929; Ciurea, 1933; Mueller & Van Cleave, 1932). Price (1940a) was the first to make extensive use of features of the ventrogenital complex (ventral sucker, gonotyl, genital pore, terminal male duct) and excretory bladder, and produced the first reasonable classification of both the family Heterophyidae and the superfamily Opisthorchioidea. In despite of the obvious significance of the rationale of Price's approach, later authors (Morozov, 1952, 1955; Yamaguti, 1958) have largely ignored the ventrogenital complex and recently discovered life-history data, and have used much the same sorts of features as earlier authors.

VI.—Note on Ephippioceras clitellarium, J. de C. Sowerby, sp., and E. costatum, A. H. Foord

1900 ◽  
Vol 7 (12) ◽  
pp. 560-561
Author(s):  
G. C. Crick
Keyword(s):  
New Species ◽  
New Genus ◽  
British Museum ◽  
Acute Angle ◽  
The Body ◽  
Museum Collection ◽  
Body Chamber ◽  
Coal Measures ◽  
A New Species

The name Nautilus clitellarius was given by J. de C. Sowerby to a Nautiloid from the Coal-measures, Coalbrookdale, Shropshire, and the description was accompanied by three figures, each representing a different specimen. In 1884 the species was included by Professor Hyatt in his new genus Ephippioceras. In 1891 Dr. A. H. Foord found a new species, Ephippioceras costatum, which was said to be “distinguished from E. clitellarium (to which it is, however, very closely related) by the character of the septa and by the surface ornaments. The septa in E. costatum do not form such an acute lobe upon the periphery as do those of E. clitellarium, and they are also a little wider apart in the former species than they are in the latter. Moreover, E. costatum is provided with prominent transverse costæ, which are strongest upon the sides of the shell where they swell out into heavy folds. These costæ are directed obliquely backwards, and cross the septa at an acute angle, passing across the periphery and forming a shallow sinus in the middle. None of the specimens in the British Museum have the test preserved, so that the ribbing has only been observed upon casts. The costæ are equally well developed upon the body-chamber and upon the septate part of the shell in the adult, but they were either very feeble or altogether absent in the young.” A re-examination of the specimens in the Museum collection shows that the separation of the two forms is quite justifiable.

Studies on Neotropical crickets: A new Anurogryllina genus (Orthoptera: Gryllidae: Gryllinae)

Zootaxa ◽  
2021 ◽  
Vol 4985 (3) ◽  
Author(s):  
OSCAR J. CADENA-CASTAÑEDA ◽  
MARTHA CAROLINA VÁSQUEZ RODRÍGUEZ ◽  
GLORIA RAQUEL DÁVILA GONZALEZ ◽  
VÍCTOR HUGO GRANDE LÓPEZ
Keyword(s):  
New Species ◽  
New Genus ◽  
The Body ◽  
Median Lobe ◽  
Two New Species

Andeogryllus n. gen. including two new species from the inter-Andean slopes and valleys of the Magdalena and Cauca rivers of Colombia are described. This new genus is similar to Zebragryllus in their habitus, differed by not have white stripes on the body or antennae and by a modified pseudoepiphallic sclerite. The genus Atsigryllus (Atsigryllae group) is located in the subtribe Anurogryllina, highlighting the secondary reduction of the median lobe. An updated key is provided for the genera of the subtribe Anurogryllina and the species of the new genus.

Mesocoelium malayanum sp.n. (Digenea: Brachycoeliidae) in a frog, Rana macrodon Dumeril and Bibron 1941, from Malaysia

1977 ◽  
Vol 51 (3) ◽  
pp. 205-208 ◽  
Author(s):  
James R. Palmieri ◽  
John T. Sullivan
Keyword(s):  
New Species ◽  
Oral Sucker ◽  
Genital Pore ◽  
Anterior Testis ◽  
Intestinal Bifurcation ◽  
Excretory Vesicle ◽  
Posterior Testis ◽  
A New Species

ABSTRACTMesocoelium malayanum sp.n. is described from the frog Rana macrodon, in Malaysia. Elongate body, broader anteriorly, measuring 1·900 (1·679–2·070) mm long by 0·404 (0·380–0·437) wide, tegument aspinose oral sucker 0·212 (0·200–0·228) by 0·202 (0·191–0·205), acetabulum 0·141 (0·132–0·150) by 0·139 (0·123–0·146), prepharynx present, oesophagus 0·115 (0·096–0·137), caeca reaching posterior ⅓ of body, anterior testis 0·097 (0·087–0·110) by 0·091 (0·087–0·100) dorsal to acetabulum, posterior testis 0·094 (0·087–0·101) by 0·092 (0·091–0·100), cirrus pouch 0·121 (0·111–0·130) by 0·047 (0·041–0·055), genital pore at left of midline of oesophagus just anterior to intestinal bifurcation, ovary 0·110 (0·091–0·127) by 0·089 (0·085–0·096) on left of body and posterior to acetabulum, vitelline glands with single follicles extending from intestinal bifurcation to ends of caeca, excretory vesicle I-shaped and eggs 0·040 (0·037–0·046) by 0·023 (0·022–0·024). Although morphologically related to M. maroccanum and M. meggitti, M. malayanum is considered to be a new species.

Sign in / Sign up

Export Citation Format

Share Document