I don't know if this reference can help. There's a picture in p. 243 (Fig. 16.14): https://books.google.pt/books?id=8Gi70yXIvxoC&pg=PA243&lpg=PA243&dq=Brachydistomum+microscelis&source=bl&ots=G1Q1a_B7lx&sig=4t6-TKu2BpKeKPnYuykF6Qc9IY4&hl=pt-PT&sa=X&ved=0ahUKEwi6q7vr66ncAhWjMewKHdYdBdYQ6AEIOTAC#v=onepage&q=Brachydistomum%20microscelis&f=false There's another reference, but it's written in Russian (I can't read it): http://www.zoofirma.ru/knigi/trematody/13888-brachydistomum-microscelis-yamaguti-1933-travassos-1944.html