Fig. 3 in Additional data on Spinitectus petterae (Nematoda: Rhabditida) from Clarias gariepinus (Siluriformes: Clariidae) in the Vaal River system: conserved morphology or high intraspecific genetic variability?

Fig. 3. Scanning electron micrographs of adult males of Spinitectus petterae Boomker, 1993 collected from Clarias gariepinus (Burchell). A – posterior section with extended left spicule; B – rugosa plates; C – two pairs of three post-cloacal papillae; D – base of left spicule and tip of right spicule protruding from cloaca; E – left spicule extended to cytoplasmic core opening; F – excised left spicule with inlay of cytoplasmic core opening; G – spicule blade with V-shaped velum, and terminal cytoplasmic core opening; H – spicule blade; I – ventral view of velum; J – excised and undigested right spicule; K, L – lateral and ventral aspect of the digested right spicule, respectively. Abbreviations: CCO – cytoplasmic core opening; FE – fleshy extension; LS – left spicule; M – manubrium; PcP – postcloacal papillae; PP – precloacal papillae; RP – rugosa plates; RS – right spicule; SB – spicule blade; SM – spicule muscle; ST – spicule tip; TCO – terminal cytoplasmic core opening; V – velum.