Definition: Marcus E 1954 (citation)- p 426-429.
Geographic distribution: Island of Sao Sebastiao.
Lectotype: Dorjes J, Karling TG 1975 (citation)- Swedish Museum of Natural History, #2749, p 183.
Marcus E 1954 (citation)- with coars sand in upper littoral of island of Sao Sebastiao. description
and illustration p 426-429, 480. figures 10, 11, 12, 13.
"Paraphanostoma etium, n. sp. (Fig. 10-13), from coarse sand in the upper littoral
of the island of São Sebastião, belongs to the same group as P. macroposthium (Steinb.),
brachyposthium Westbl. and westbladi Marc. It differs from brachyposthium by smaller size
(2.5 mm alive) and proportionally longer stylet. The two other species are 1.5 mm alive.
The new species has its mouth (b) in the anterior half of the body, westbladi in the middle,
and macroposthium and brachyposthium in the posterior half. P. macroposthium has a simple
vaginal or antral caecum; P. etium a bifurcated one (c); P. brachyposthium and westbladi
have none. The female pore of P. etium (v) is much nearer to the male (r) than to the mouth
(b); in brachyposthium it is equidistant; in macroposthium and westbladi nearer to the mouth.
Very peculiar is the ductus spermaticus (z) of the new species, viz. a plasmatic cone
surrounded by its nuclei. This appendix contrasts completely with that of the three other
mentioned species."
Dorjes J 1968 (citation)- lists p 112.
Dorjes J, Karling TG 1975 (citation)- Swedish Museum of Natural History, Brazil figure 19 of
female parts. p 183.
Notes for the valid (accepted) taxonomic name
Return to Paraphanostoma etium