Pasipha brevilineata Leal-Zanchet, Rossi & Alvarenga

Leal-Zanchet, Ana Maria, Rossi, Ilana, Seitenfus, Ana Lúcia Ramos & Alvarenga, Juliana, 2012, Two new species of land flatworms and comments on the genus Pasipha Ogren & Kawakatsu, 1990 (Platyhelminthes: Continenticola), Zootaxa 3583, pp. 1-21 : 9-10

Pasipha brevilineata Leal-Zanchet, Rossi & Alvarenga , sp. nov.

Pasipha sp. 3: Leal-Zanchet & Carbayo, 2000 Pasipha sp. 3: Leal-Zanchet & Baptista, 2009 Pasipha sp. 2: Leal-Zanchet et al., 2009

Pasipha sp. 3: Leal-Zanchet et al., 2011

Etymology: the specific name refers to the thin (=brevi) median stripe (=lineata) over the dorsum.

Type-material.

Holotype: MZUSP PL.1202: coll. A. M. Leal-Zanchet, 0 8. September 2000, São Francisco de Paula, RS, Brazil—anterior tip in two fragments: transverse sections on 20 slides; anterior region at the level of the ovaries: sagittal sections on 10 slides; pre-pharyngeal region: transverse sections on 6 slides; pharynx: sagittal sections on 10 slides; copulatory apparatus: sagittal sections on 19 slides;

Paratypes: MZU PL.130: leg. F. Carbayo, 14. January 1998, São Francisco de Paula, RS, Brazil—pre-pharyngeal region: transverse sections on 10 slides; pharynx and copulatory apparatus: sagittal sections on 13 slides; MZU PL.131: leg. M. Cardoso, 0 4. May 1998, São Francisco de Paula, RS, Brazil—anterior tip: horizontal sections on 5 slides; pre-pharyngeal region: transverse sections on 11 slides; pharynx: sagittal sections on 16 slides; copulatory apparatus: sagittal sections on 15 slides; MZU PL.132: leg. L. S. Teixeira, 0 8. June 1998, São Francisco de Paula, RS, Brazil—anterior region at the level of the ovaries in two fragments: horizontal sections on 15 slides; pre-pharyngeal region: transverse sections on 4 slides; pharynx: sagittal sections on 7 slides; copulatory apparatus: sagittal sections on 11 slides; MZU PL.133: coll. A. M. Leal-Zanchet, 14. January 1999, São Francisco de Paula, RS, Brazil—preserved in ethanol 70º; MZU PL.134: leg. M. Cardoso, 23. March 1999, São Francisco de Paula, RS, Brazil—preserved in clove oil; MZU PL.135: leg. V. Baptista, 27. May 2004, São Francisco de Paula, RS, Brazil—anterior tip: transverse sections on 20 slides; pre-pharyngeal region: transverse sections on 10 slides; pharynx and copulatory apparatus: sagittal sections on 17 slides; MZU PL.136: leg. J. Alvarenga, 0 5. August 2005, São Francisco de Paula, RS, Brazil—copulatory apparatus: horizontal sections on 13 slides; MZU PL.137: leg. L.B. Matos, 0 5. August 2005, São Francisco de Paula, RS, Brazil—copulatory apparatus: sagittal sections on 10 slides.

Diagnosis:

Dorsum black or dark-brown; median stripe pale yellow to grayish, thin and sometimes interrupted, becoming whitish and wider next to posterior tip; eyes dorsal with clear halos; glandular border with three cell types; mc:h, 17%-19%; pharynx cylindrical; esophagus conspicuous; esophagus: pharynx ratio, 27%-37%; anteriormost testes posterior to ovaries; most posterior testes near root of pharynx; sperm ducts opening into end of proximal region of vesicle; prostatic vesicle, mainly globose, extrabulbar with two distinct regions: a forked, laterally expanded and ventrally disposed ental region and a large unforked ectal region; ejaculatory duct sinuous; male atrium long, intensely folded, with two main regions; ovovitelline ducts emerging dorsally from end of posterior half of ovaries, uniting ventrally to the female atrium; common glandular ovovitelline duct almost vertical, slightly anteriorly arched; female canal posteriorly directed and slightly recurved; female atrium oval-elongate, highly folded; length of male atrium, approximately two times that of female atrium; gonopore canal slightly posteriorly inclined; male and female atria with independent musculatures; dorsal elongated fold separating male and female atria.

Type-locality: São Francisco de Paula, state of Rio Grande do Sul (RS), Brazil.

Distribution: Rio Grande do Sul (São Francisco de Paula), Brazil.

TABLE III. Measurements, in mm, of specimens of Pasipha brevilineata Leal-Zanchet, Rossi & Alvarenga , sp. nov. -: not measured; --: gonopore absent; *: After fixation; DG: distance of gonopore from anterior end; DM: distance of mouth from anterior end; DMG: distance between mouth and gonopore; DPVP: distance between prostatic vesicle and pharyngeal pouch. The numbers given in parentheses represent the position relative to body length.