Fig. 4

Acantholaimus angustus, micrographs. a female, specimen No. 8, head region; b male, specimen No. 2, head region; c female, specimen No. 10, head region; d male, specimen No. 2, region of spicule; e–g female, specimen No. 7, different optical sections of head region; h specimen No. 7, somatic seta on filiform part of tail. Scale bars = 10 μm. Arrows mark location of cervical setae