FIGURE 4. A–L in One new species and records of Ichthydium Ehrenberg, 1830 (Gastrotricha: Chaetonotida) from Sweden with a key to the genus

FIGURE 4. A–L) Subgenus Ichthydium sensu stricto. A) Ichthydium auritum dorsal view. B) I. bifasciale dorsal view. C) I. bifurcatum dorsal view. D) I. bifurcatum lateral view of head. E) I. bifurcatum enlargement of adhesive tube. F) I. brachykolon dorsal view. G) I. crassum dorsal view and H) lateral view of posterior end. I) I. dubium dorsal view. J) I. fossae dorsal view. K) I. galeatum dorsal view and L) ventral view of head showing arrangement of ciliation. A, modified from Brunson (1950); B–E, I–L, modified from Schwank (1990); F, modified from Brunson (1949); G, H, modified from Daday (1905). Scale bars: 20 µm.