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6. Ditylenchus Filipjev, 1934 Ditylenchus(茎线虫属)隶属于Ditylenchinae(茎亚科)。虫体略呈圆筒形,中等大小,体长一般在300～1400μm左右。体表环纹细密,但不易看到。侧区有4～6条侧线。唇区低平,一般无缢缩,唇环不清楚,颈乳突小,但清楚可见。口针稍纤细,一般在6～16μm左右,口针基部球圆形,小。背食道腺开口距口针基部球很近。中食道球一般呈卵圆形,有时呈纺锤形。峡部较细长,食道腺一般呈长梨状,与肠交界明显,少数种类稍倾斜覆盖于肠的前端。贲门细小,呈小叶状。排泄孔位于食道腺中前方附近,少数种类位于食道腺
6. Ditylenchus Filipjev, 1934 Ditylenchus (Stem nematode) belongs to Ditylenchinae (stem subfamily). Insects slightly cylindrical, medium size, body length is generally about 300 ~ 1400μm. Surface ring fine, but not easy to see. Side area has 4 to 6 lines. Low lip area, generally no constriction, lip ring is not clear, neck papules small, but clearly visible. Slightly thin needle, usually 6 ~ 16μm, needle base ball round, small. Dorsal esophageal gland opening from the base of the needle near the needle. The esophagus is generally ovoid in shape, sometimes spindle-shaped. Isthmus slender, esophageal glands are generally long pear-shaped, with the junction of intestinal obvious, a few species slightly tilted cover the front of the intestine. Cardia small, lobular. Excretory holes located in the esophageal gland in the vicinity of the front, a few species located in the esophageal gland