Rev 3/91
Secernentea
Tylenchida
Aphelenchina
Aphelenchoidea
Aphelenchoididae
Bursaphelenchinae
Characterized by large metacorpus (median bulb), esophageal glands usually not enclosed in a bulb (overlapping). Dorsal esophageal gland opens into metacorpus. Males have caudal papillae and caudal alae.