Fig. 1
From: Reproductive system of the genus Crasiella (Gastrotricha, Macrodasyida)
Morphology of the reproductive system of Crasiella diplura (b, c, d, e DIC microscopy). a Drawing of a dorsal view of Crasiella diplura showing the reproductive system (modified from Clausen 1968). b Habitus of an adult specimen c Proximal portion of the testes at the level of the pharingeo-intestinal junction. d Fusion of the sperm ducts on the mid-ventral plan (arrow). e Posterior region of the body: the mature oocyte, the fusion of the sperm ducts (arrow), and the frontal and caudal organs are clearly visible. co caudal organ, fo frontal organ, mo oocyte, ov ovary, t testes. Scale bars b = 50 μm; c–e = 15 μm