Spiriniinae, Gerlach & Murphy, 1965

Armenteros, Maickel, Ruiz-Abierno, Alexei & Decraemer, Wilfrida, 2014, Revision of Desmodorinae and Spiriniinae (Nematoda: Desmodoridae) with redescription of eight known species, European Journal of Taxonomy 96, pp. 1-32 : 26-27

Key to the genera of Spiriniinae

1. Cuticle coarsely striated..................................................................................................................... 2

– Cuticle finely striated......................................................................................................................... 4

2. Tail conical-cylindrical ............................................................... Spirodesma Cavalcanti et al., 2009

– Tail conical......................................................................................................................................... 3

3. Amphidial fovea on a cuticular plate, somatic setae present and spines absent.................................. ............................................................................................................ Stygodesmodora Blome, 1982

– Amphidial fovea not on a cuticular plate, somatic setae and spines present....................................... ......................................................................................................... Echinodesmodora Blome, 1982

4. Buccal cavity spacious, parallel and sclerotized walls ...................................................................... 5

– Buccal cavity approximately conical (of large or medium size) or minute....................................... 6

5. Amphidial fovea multispiral, buccal armature with one dorsal tooth and no ventrosublateral teeth .. ............................................................................................................ Parallelocoilas Boucher, 1975

– Amphidial fovea cryptospiral, buccal armature with one dorsal tooth and two ventrosublateral teeth......................................................................................... Pseudometachromadora Timm, 1952

6. Buccal cavity small-sized, one minute dorsal tooth .......................................................................... 7

– Buccal cavity from medium to larger size, dorsal tooth large ........................................................... 8

7. Tail conical and finely striated........................................................................ Spirinia Gerlach, 1963

– Tail conical-cylindrical (including filiform) and coarsely striated ...................................................... ..................................................................................................... Perspiria ( Wieser & Hopper, 1967)

8. Single or multiple pharyngeal posterior bulb muscular enlarged and internal lining of the pharynx thickened............................................................................................................................................ 9

– Single pharyngeal posterior bulb rounded and internal lining of the pharynx not thickened.......... 12

9. Dorsal tooth large spear-like, precloacal supplements S-shaped............................. Onyx Cobb, 1891

– Dorsal tooth not spear-like, precloacal supplements not S-shaped ................................................. 10

10. Pharynx posterior bulb barrel-shaped, buccal cavity large-sized, dorsal tooth prominent.................. ......................................................................................................... Metachromadora Filipjev, 1918

– Pharynx posterior bulb other shaped, buccal cavity medium-sized .................................................11

11. Pharynx posterior bulb divided in 2–4 bulbi, outer labial sensilla setiform, subcephalic setae present, precloacal supplements as cuticular plates ........................................ Chromadoropsis Filipjev, 1918

– Pharynx posterior bulb not divided in bulbi, outer labial sensilla papilliform, subcephalic setae absent, precloacal supplements as papillae............................... Papillonema Verschelde et al., 1995

12. Precloacal supplements S-shaped................................................................... Polysigma Cobb, 1920

– Precloacal supplements with other shape or absent......................................................................... 13

13. Subcephalic setae present .................................................................... Chromaspirina Filipjev, 1918

– Subcephalic setae absent........................................... Paradesmodora Schuurmans Stekhoven, 1942