Turbellarian taxonomic database

Paraphanostoma westbladi Notes

No Notes for this taxon.

Notes for the valid (accepted) taxonomic name

Notes for Childia westbladi

Definition: Marcus E 1950 (citation)- p 14-15, figures 16-18..
Geographic distribution:  Brazil, Isle of Sao Sebastiao, algae and gray mud, 5 meters- type
Lectotype: Dorjes J, Karling TG 1975 (citation)- Swedish Museum of Natural History, #2750, p 183.

Marcus E 1950 (citation)- describes this species and compares other of genus, p 13, 14-15, 102-3 notes
	male speciments in October.  By November also females.
        "Paraphanostoma westbladi, n. sp. (Fig. 16-18), 1.5 mm long alive, was found between algae
        Ilha das Palmas (bay of Santos) and in the same biotope as well as in gray mud (about 5 m
        depth) of the island of São Sebastião. It belongs to the species with musculous seminal
        vesicle (macroposthium, brachyposthium) and with a spermatic duct (z). The male copulatory
        organ of westbladi is, even in details, identical with that of macroposthium, though it is
        a little smaller. Notwithstanding westbladi must be separated from macroposthium, as its 
        bursa (u) has neither a posterior pouch nor cuticular hooks. Moreover, westbladi is
        cytologically exceptional by its big  nuclei (average diameter 8 micra; in the spermatogonia
        10-12 micra) that are scarce in all tissues. This character does neither occur in
        brachyposthium, a species two times or more bigger than westbladi, with the female pore
        between mouth and male opening (in westbladi and macroposthium it is nearer to the mouth)
        and small eggs. The longitudinal and transverse parenchymatic muscles of brachyposthium
        are absent in westbladi. The brain of the new species differs greatly from that described
        for P. submaculatum and crassum, where the ganglion lies behind the statocyst and has two
        horns directed forward and upward. In P. westbladi the statocyst lies behind the commisure
        of the internal or dorsal ganglia and on the level of this commisure. The commisure of the
        external or ventral ganglia is caudal and ventral to the statocyst. 
        Follicle-cells (i) suround even the largest ovocytes (length: 0.1 mm; height: 1.6 mm) of our
        material; there are 3-4 nucleoli inthe ovocytes as in macroposthium and brachyposthium.
        female antrum (w) is globose and of spongeous, vacuolized structure. The spermatic duct (z) 
        inserts at the level of the constriction between antrum and bursa (u), not exclusively
        at the front-wall of the bursa (macroposthium, brachyposthium).

Marcus E 1954 (citation)- mentions p 426, 427, 428, 429, 450.	
Dorjes J 1968 (citation)- lists.
Dorjes J, Karling TG 1975 (citation)- Swedish Museum of Natural History, p 183 distribution and comments.
	Figure of female parts- closely related to P. macroposthium and P. etium.

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