Turbellarian taxonomic database
Hartog 1966 (citation)- p. 137, "The behaviour of Proxenetes cisorius differs much from that of the coexisting species Vejdovskya halileimonia. When the sample was placed in a jar and covered with sea water V. halileimonia left its shelter and begun to swim freely around. This species is attracted to the light source and swims only in the daytime. On the contrary, P. cisorius shuns the light and swims only when the light intensity is low or when it is dark. When exposed to the light of a lamp the animals immediately disappear into the mud."
Notes from synonyms