Small subfamily with four genera recognized as of 1996:
Etymology - from the Greek trichos (a hair) and dory (a spear).
Trichodorus and Paratrichodorus diovarial, Monotrichodorus and Allotrichodorus monovarial.
Caudal alae usually absent in males of Trichodorus, but occur in Paratrichodorus and Allotrichodorus.
Males of all genera with a single testis.
Vary in length from 0.4 to 1.8 mm. Usually rounded at both ends.
Cuticle tends to swell in water and fixative when nematodes killed.
Curved onchiostyle with dorsal groove.
Trichodorus and Paratrichodorus occur worldwide, Monotrichodorus and Allotrichodorus only reported from South and Central America as of 1996.
Wide host range, stunt roots, transmit Tobacco Rattle Virus, Pea early-browning Virus and Pepper Ringspot Virus.
At root tip.
Root elongation ceases.
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