Order TYLENCHIDA

Rev: 09/26/07

•        all have movable hollow stylet.   

Classification and Characteristics Chart of the Order Tylenchida

• Sub-orders
• Superfamilies
• Families
• Genera

Morphology and Anatomy:

Sub-order Tylenchina 

• stomatostylet and three-part esophagus.
• dorsal esophageal gland opening (DEGO) in procorpus, close behind base of stylet
• parasites of Angiosperms (monocotyledons and dicotyledons), fungi
• male with at most 1 ray in caudal alae, blade-shaped spicule
• Tyl = knobbed; enchos = spear.

Sub-order Aphelenchina

•  DEGO in metacorpus
• early plant parasites? Hosts are Gymnosperms, ferns, ornamentals/nursery, fungi, insects
• males with 6 rays in caudal alae and "rose-thorn" -shaped spicules

• Aphel = smooth; enchos = spear

Sub-order Sphaerulariina

• parasites of insects

Sub-order -Hexatylina

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