01608nas a2200145 4500008004100000020001400041245007900055210006900134260004900203300001200252490000700264520110100271100002301372856006701395 2008 eng d a0097-029800aFreshwater Triclad Planarians (Turbellaria) from Plummers Island, Maryland0 aFreshwater Triclad Planarians Turbellaria from Plummers Island M bBiological Society of Washingtonc2008/05/01 a11 - 120 v153 a

Five species of freshwater triclad planarians were found on Plummers Island and the adjacent mainland property, Montgomery County, Maryland. One species (Dugesia [G.] tigrina) occupying the Potomac River and a tributary, is tolerant of degraded habitat. The other four occupy vernal pools (Hymanella retenuova and Phagocata velata) or spring-seeps (Phagocata morgani and Paraplanaria dactyligera) and appear to be indicators of high quality aquatic habitat. These five species represent 36% of the total known Maryland fauna of 14 species.ABSTRACT Five species of freshwater triclad planarians were found on Plummers Island and the adjacent mainland property, Montgomery County, Maryland. One species (Dugesia [G.] tigrina) occupying the Potomac River and a tributary, is tolerant of degraded habitat. The other four occupy vernal pools (Hymanella retenuova and Phagocata velata) or spring-seeps (Phagocata morgani and Paraplanaria dactyligera) and appear to be indicators of high quality aquatic habitat. These five species represent 36% of the total known Maryland fauna of 14 species.

1 aNorden, Arnold, W. uhttp://dx.doi.org/10.2988/0097-0298(2008)15[11:FTPTFP]2.0.CO;201370nas a2200121 4500008004100000245010900041210006900150300001000219490000700229520088600236100001701122856010901139 1941 eng d00aThe morphology and life-history of Hymanella retenuova, a new species of triclad from New England0 amorphology and lifehistory of iHymanella retenuovai a new specie a85-970 v263 a

HYMANELLA (Planariidae) is defined and one species, H. retenuova, is described from vernal ponds and a spring-fed swampy stream in Seekonk, Massachusetts. In vernal ponds the species is present during the winter and spring and becomes sexually mature. The fully formed, stalkless egg capsules are retained in the body of the parent worm for a period before being deposited. In vernal ponds in nature these egg capsules apparently remain dormant during the summer and early autumn to hatch when water is again in the ponds in the late fall or early winter. The capsules resist exptl. attempts to induce their hatching in the early weeks folowing their deposit, but young worms emerge after a resting period of some 2 months or more. The species is markedly protandrous, and in some morphological and ecological features shows similarities to spp. of Phagocata and Curtisia.

1 aCastle, W.E. uhttp://www.jstor.org/discover/10.2307/2420756?uid=3737952&uid=2129&uid=2&uid=70&uid=4&sid=2110179821435100346nas a2200109 4500008004100000245004100041210003600082300000900118490000700127100001600134856008600150 1944 eng d00aThe fresh-water triclads of Michigan0 afreshwater triclads of Michigan a1-440 v601 aKenk, Roman uhttp://deepblue.lib.umich.edu/bitstream/handle/2027.42/56305/MP060.pdf?sequence=100403nas a2200109 4500008004100000245009600041210006900137300001000206490000700216100001800223856005200241 1969 eng d00aAn annotated checklist of the freshwater Tricladida of the Nearctic and Neotropical Regions0 aannotated checklist of the freshwater Tricladida of the Nearctic a59-640 v471 aBall, Ian, R. uhttps://continenticola.myspecies.info/node/1398