Fergusobia

Davies, Kerrie A., Ye, Weimin, Giblin-Davis, Robin M., Taylor, Gary S., Scheffer, Sonja & Thomas, W. Kelley, 2010, The nematode genus Fergusobia (Nematoda: Neotylenchidae): molecular phylogeny, descriptions of clades and associated galls, host plants and Fergusonina fly larvae 2633, Zootaxa 2633 (1), pp. 1-66 : 45-47

Key to species and morphospecies of Fergusobia nematodes from Corymbia , Angophora , Metrosideros , narrow-leaved Melaleuca , Syzygium and Eucalyptus , based on host plant, gall forms, morphology of nematodes, and associated fly species

1. Fergusobia from galls on Corymbia spp ........................................................................................................2 Fergusobia from galls on Angophora spp. ...................................................................................................3 Fergusobia from galls on Metrosideros spp. .......................................................................... F. pohutukawa Fergusobia from galls on Syzygium spp. ................................................................................. F. jambophila Fergusobia from galls on Eucalyptus spp. ...................................................................................................4 Fergusobia from narrow leaved Melaleuca spp. ........................................................................................15 Fergusobia from soil not from gall................................................................................................... F. indica

2. Fergusobia from flower bud galls ........................................................................................ F. ptychocarpae Fergusobia from axial bud (‘stem’) galls ........................................................................................ F. magna Fergusobia from leaf pea galls ........................................................................................ F. morphospecies 3

3. Males with bursa occupying 25–55% body length, angular spicules............................. F. morphospecies 1 Males with bursa occupying 60–80% body length, arcuate spicules ............................. F. morphospecies 2

4. Fergusobia from terminal shoot bud galls....................................................................................................5 Fergusobia from ‘leafy’ leaf bud galls.........................................................................................................6 Fergusobia from flower bud galls................................................................................................................8 Fergusobia from leaf pea galls...................................................................................................................12 Fergusobia from flat leaf galls...................................................................................................................14 Fergusobia from style galls ........................................................................................... F. morphospecies 15 Fergusobia from axial bud (‘stem’) galls ...................................................................... F. morphospecies 10 Fergusobia from axial pea galls .................................................................................... F. morphospecies 16

5. Males with bursa usually arising in anterior third of nematode ...................................... F. morphospecies 8 Males with bursa usually arising at 40–60% of length of nematode............................... F. morphospecies 7 Males with bursa usually arising in posterior third of nematode................................................. F. brittenae

6. Males with bursa arising near excretory pore.................................................................. F. morphospecies 6 Males with bursa occupying <50% of body length......................................................................................7

7. From galls on E. bridgesiana ; male tails ca 40 µm long......................................................... F. tumifaciens From galls on E. viminalis ; male tails 20–35 µm long .................................................. F. morphospecies 11

8. Males with bursa occupying 66% of body length .................................................................... F. brevicauda Males with bursa occupying <60% of body length.....................................................................................9

9. Parthenogenetic females with raised circum-oral area, males with bursa occupying>75% of body length ......... .............................................................................................................................. F. morphospecies 14 Parthenogenetic females with raised circum-oral area, males with bursa occupying ca 25% of body length ..... ................................................................................................................................... F. morphospecies 5 Parthenogenetic females without raised circum-oral area..........................................................................10

10. Male tail with truncate tip ................................................................................................... F. philippinensis Male tail with rounded tip...........................................................................................................................11

11. Males with bursa occupying 15–20% body length .......................................................................... F. curriei Males with bursa occupying 25–40% body length.......................................................... F. morphospecies 4

12. Males with bursa occupying 30–50% body length .......................................................... F. morphospecies 9 Males with bursa occupying <30% body length.........................................................................................13

13. Parthenogenetic female body narrows sharply behind vulva ....................................... F. morphospecies 13 Parthenogenetic female body narrows gradually behind vulva.................................... F. morphospecies 17 14. Parthenogenetic females with hemizonid 7–8 annules in front of secretory pore .......................... F. fisheri Parthenogenetic females with hemizonid 1–4 annules in front of secretory pore ........ F. morphospecies 12

15. Males with bursa occupying ca 80% body length.......................................................... F. morphospecies 19 Males with bursa occupying ca 60% body length ....................................................... F. morphospecies 18.