Two new species of land flatworms and comments on the genus Pasipha Ogren & Kawakatsu, 1990 (Platyhelminthes: Continenticola)
Author
Leal-Zanchet, Ana Maria
Author
Rossi, Ilana
Author
Seitenfus, Ana Lúcia Ramos
Author
Alvarenga, Juliana
text
Zootaxa
2012
3583
1
21
journal article
10.5281/zenodo.283085
c8d65945-cf91-4712-aa98-e953b6c91c85
1175-5326
283085
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.