León, Rodrigo Ponce De, Volonterio, Odile (2018): A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus. Zootaxa 4378 (3): 323-336, DOI: https://doi.org/10.11646/zootaxa.4378.3.

León, Rodrigo Ponce De

Volonterio, Odile

FIGURE 9. Hyperparasites. (a) Plerocercoid larva, showing four suckers. Scale bar: 50 µm. (b) Nematode (left) and plerocercoid larva (right). Scale bar: 100 µm.Published as part of León, Rodrigo Ponce De & Volonterio, Odile, 2018, A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus, pp. 323-336 in Zootaxa 4378 (3) on page 331, DOI: 10.11646/zootaxa.4378.3.2, http://zenodo.org/record/116995

NEUROSURGERY ENTHUSIASTIC WOMEN SOCIETY

FIGURE 9 in A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus

Three species of Temnocephala have been reported on Aegla from Uruguay: Temnocephala axenos, Temnocephala mertoni and Temnocephala talicei. As part of a systematic review of the Uruguayan species of Temnocephala, a fourth species was found on Aegla platensis and Aegla uruguayana. This species, new for the genus, has the following diagnostic characters: Large temnocephalan; slightly curved penial stylet (225 µm in length) with a symmetrical introvert (27 long by 18 µm in diameter) that has at least 44 spine-like projections, each bearing 7 rows of internal spines; a seminal vesicle that opens sub-polarly into the contractile vesicle; a muscular vagina with a strong asymmetrical sphincter; preequatorial nephridiopores close to the internal borders of the elongate-oval excretory syncytia; a large pharynx with anterior and posterior sphincters of about the same diameter and a narrow pharyngeal lumen with nearly uniform width. To contemplate the characters of the pharynx, an amendment of the genus Temnocephala is given. The new species resembles Temnocephala cyanoglandula, which also has a very long, slightly curved penial stylet, but differs from it by having a shorter penial stylet, a lower number of rows of spines in the introvert, a larger, different type of pharynx, a smaller contractile vesicle and a larger sucker. The new species is carnivorous and feeds on whole preys, which are mainly annelids (Stratiodrilus) and other species of Temnocephala. The new species was found to be hyperparasitised by plerocercoid and nematode larvae, but hyperparasites were not found in the other sympatric species of Temnocephala. Based on the findings presented here, it is clear that detailed histological descriptions of the pharynx should be contemplated as part of the normal work in taxonomy of temnocephalans. </jats:p

RODRIGO PONCE DE LEÓN

ODILE VOLONTERIO

Crossref

Zootaxa

A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus

FIGURE 1. Temnocephala gargantua sp. nov. in ventral view. (a) Holotype, showing Stratiodrilus' hard parts in the intestine. Scale bar: 400 µm. (b) Diagram of the general organization of the body. Scale bar: 500 µm. Abbreviations: ev, excretory vesicle; hg, Haswell's glands; ph, pharynx; sg, sucker glands; su, sucker; te, testes; tg, tentacular glands; vi, vitellaria.Published as part of León, Rodrigo Ponce De & Volonterio, Odile, 2018, A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus, pp. 323-336 in Zootaxa 4378 (3) on page 325, DOI: 10.11646/zootaxa.4378.3.2, http://zenodo.org/record/116995

FIGURE 1 in A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus

León, Rodrigo Ponce De, Volonterio, Odile (2018): A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus. Zootaxa 4378 (3): 323-336, DOI: 10.11646/zootaxa.4378.3.

ZENODO

FIGURE 8. Pharynges of other Temnocephala spp. (a) Temnocephala talicei. Scale bar: 100 µm. (b) Temnocephala rochensis. Scale bar: 100 µm.Published as part of León, Rodrigo Ponce De & Volonterio, Odile, 2018, A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus, pp. 323-336 in Zootaxa 4378 (3) on page 331, DOI: 10.11646/zootaxa.4378.3.2, http://zenodo.org/record/116995

FIGURE 8 in A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus

FIGURE 7. Penial stylet of of Temnocephala gargantua sp. nov. (a) Whole stylet. Scale bar: 50 µm. (b) Introvert. Scale bar: 15 µm.Published as part of León, Rodrigo Ponce De & Volonterio, Odile, 2018, A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus, pp. 323-336 in Zootaxa 4378 (3) on page 329, DOI: 10.11646/zootaxa.4378.3.2, http://zenodo.org/record/116995

FIGURE 7 in A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus

FIGURE 6. Reproductive complex of Temnocephala gargantua sp. nov. (a) Reconstruction of the whole complex from a dissection. Scale bar: 100 µm. (b) Reconstruction of the female reproductive complex based on serial sagittal sections. Scale bar: 100 µm. (c) Detail of the sphincter in the female reproductive complex. The asterisk marks the thinner side of the sphincter. Scale bar: 30 µm. Abbreviations: at, atrium; cv, contractile vesicle; go, gonopore; ov, ovary; ps, penial stylet; rv, resorbiens vesicle; sp, sphincter; sr, seminal receptacle; sv, seminal vesicle; vd, vitelline duct; vg, vagina.Published as part of León, Rodrigo Ponce De & Volonterio, Odile, 2018, A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus, pp. 323-336 in Zootaxa 4378 (3) on page 329, DOI: 10.11646/zootaxa.4378.3.2, http://zenodo.org/record/116995

FIGURE 6 in A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus

FIGURE 3. Sagittal section of Temnocephala gargantua sp. nov. Scale bar: 300 µm. Abbreviations: at, atrium; gl, glands surrounding the distal portion of the female reproductive system; go, gonopore; in, intestine; mo, mouth; ov, ovary; ph, pharynx; rv, resorbiens vesicle; sp, sphincter; su, sucker; tn, tentacle; vi, vitellaria.Published as part of León, Rodrigo Ponce De & Volonterio, Odile, 2018, A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus, pp. 323-336 in Zootaxa 4378 (3) on page 326, DOI: 10.11646/zootaxa.4378.3.2, http://zenodo.org/record/116995

A new species of Temnocephala (Platyhelminthes) with an unusual pharynx, including an amendment of the diagnosis of the genus

Abstract

Similar works

Full text

Available Versions

NEUROSURGERY ENTHUSIASTIC WOMEN SOCIETY

Crossref

NEUROSURGERY ENTHUSIASTIC WOMEN SOCIETY

ZENODO

NEUROSURGERY ENTHUSIASTIC WOMEN SOCIETY

NEUROSURGERY ENTHUSIASTIC WOMEN SOCIETY

NEUROSURGERY ENTHUSIASTIC WOMEN SOCIETY

NEUROSURGERY ENTHUSIASTIC WOMEN SOCIETY