Fig. 1 in Family Tylenchidae (Nematoda): an overview and perspectives

Fig. 1 The illustration of cuticle annulation patterns in Tylenchidae. a Cuticle only marked with transverse annuli: this is the most common pattern in Tylenchidae. b The zigzag transverse annuli: only found in Miculenchus. c Cuticle with longitudinal ridges or grooves that divide the surface into minute squares or rectangular blocks: this pattern is presented in Atylenchus, Coslenchus, Ecphyadophoroidea, Eutylenchus, Neothada, Pleurotylenchus, and Tanzanius. d Cuticle appears smooth in LM, but with shallow annulation: this pattern is found in Allotylenchus, Polenchus, and Lelenchus. e The distinct transverse annuli only in lip region, other part of body marked by longitudinal ridges: this pattern is only known for Campbellenchus. f Cuticle marked with transverse annuli but surface has shallow longitudinal striae: this is represented in some of Malenchus species, e.g., M. nanellus Siddiqi, 1979