Photo Gallery- Nine-mile Prairie Photo Gallery- Homestead Nat'l Monument |
Description (from Thorne, 1974)
Body
cylindroid,
slightly arcuate when relaxed with anterior end usually somewhat twisted.
Lateral field 1/3 body width without definite cells but a series of exceedingly
fine tubules extend out to pores, when observed from a dorsal view. Lip
region rounded, set off by slight depression with inconspicuous
papillae. Four sclerotized
plates about oral opening. Spear
22
um
long, slender, slightly curved with short aperture. Guiding ring
appearing as a single obscure line but doubtless double. Extensions
about as long as spear. Esophagus enlarged slightly anterior to middle,
basal
portion half neck width. Cardia
a
thin disc, then elongate hemispheroid. Vulva
a deep transverse slit. Ovaries
reflexed
half their length. Eggs 2 - 2 1/2 times as long as body width.
Prerectum length 3 times body width. Rectum slightly longer than
anal body diameter. Tail bluntly rounded with numerous
saccate
bodies. Males not found in northern Great Plains.
Pungentus pungens is distinctive because
of the slender body, very long, slightly arcuate spear and numerous saccate
bodies in tail.
Habitat: An infrequent species from native
sod near Opal, South Dakota; Stanley, North Dakota; Elizabeth, Minnesota
and Holbrook, Nebraska.
DNA Sequences Obtained
Specimen: | Collected: |
9Mile 3-30 LP1-05 | 9 Mile Prairie, First Survey |
Konza SW-02 | Konza Prairie, Preliminary survey |