Tripylina

Zhao, Zeng Qi, 2009, A review of the genus Tripylina Brzeski, 1963 (Nematoda: Triplonchida), with descriptions of five new species from New Zealand, Zootaxa 2238, pp. 1-24 : 22

Key for identification of species of Tripylina

1. Subventral denticles posterior to dorsal tooth............................................................................................................... 2

– Subventral denticles anterior to dorsal tooth ................................................................................................................ 3

2. Dorsal tooth larger than subventral denticles, cervical seta 60–78 µm from anterior end .......................... T. arenicola

– Dorsal and subventral denticles of similar size, cervical seta 22–28 µm from anterior end .......................... T. ursulae

3. Cervical setae absent..................................................................................................................................................... 4

– Cervical setae present ................................................................................................................................................... 6

4. Body length less than 800– 940 µm, stomatal chamber walls of equal thickness ...................................... T. macroseta

– Body length more than 1400 µm .................................................................................................................................. 5

5. a = 29–30; b = 2.9–6.0; c = 18–26; c’ = 2.0–2.6 ................................................................................ T. yeatesi sp. nov.

– a = 22–23; b = 6.0–6.2; c = 14–16; c’ = 2.7–3.0 ............................................................................ T. kaikoura sp. nov.

6. One ventromedian cervical seta.................................................................................................................................... 7

– Two ventromedian cervical setae ....................................................................................................................... T. longa

7. No lateral cervical setae ................................................................................................................................................ 8

– Two pairs of lateral cervical setae................................................................................................................................. 9

8. Body length 1.4 mm or less, V 64 –70% ............................................................................................................. T. sheri

– Body length 1.6 mm or more, V 60 –65% .................................................................................................... T. stramenti

9. a <23 ................................................................................................................................................. T. tamaki sp. nov.

– a> 24 .......................................................................................................................................................................... 10

10. Cervical seta 62–77 µm from anterior of body; dorsal tooth 13–16 µm from anterior of body ....... T. tearoha sp. nov.

– Cervical seta 78–86 µm from anterior of body; dorsal tooth 16–19 µm from anterior of body ... T. manurewa sp. nov.