| Refer to subfamily diagnosis (Boleodorinae).
This genus is tentatively included under the Boleodorinae because
it shares many characteristics with Psilenchus;
the en-face view is, however, more like Filenchus
(subfamily Tylenchinae).
Females didelphic-amphidelphic
KEY TO THE SPECIES OF ATETYLENCHUS (per Hosseinvand et al.,2020)
1. Tail very long (165-230 um), filiform
...... A. metaporus Erum & Shahina, 2008
Tail shorter (under 140 um), conical or clavate
........ 2
2. Body length 1-1.5 mm; stylet = 13-16 um
.........
A. abulbosus (Thorne, 1949) Khan, 1973
Body length under 1 mm; stylet 13 um or
less ......... 3
3. Stylet with weak knobs; tail becoming
broader near the terminus and ending to a pointed projection ........
A. amiri (Maqbool & Shahina, 1984) Geraert &
Raski, 1987
Stylet without knobs; tail regularly
tapering or clavate ......... 4
4. Lip region with four pronounced lobes giving
a disc-like structure; phasmids at mid-tail ............ A. longilabiatus
Lip region simple, without prominent
lobes; phasmids at anterior half of tail........ 5
5. Tail first conical, but then
cylindrical to slightly clavate, 90-136 um .......... A. dezfuliensis
Tail conical, regularly tapering towards
terminus, 51-75 um .......... 6
6. Body length under 0.7 mm; tail 51-62
um; V = 54-59 ........ A. minor Yaghoubi, 369 Pourjam, Atighi & Pedram, 2015
Body length more than 0.7 mm; tail 63-75
um; V = 45-51 ........ A. graminus (Bajaj, Kaushik
& Bhatti, 1982) Siddiqi, 2000
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