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Pest Description
ACHLYSIELLA WILLIAMSI
IDENTITY:Scientific name: Achlysiella williamsi
(Siddiqi, 1964) Hunt, Bridge & Machon, 1989 n. comb.
(= Radopholus williamsi Siddiqi, 1964)
 Common name: No common name

NOTES ON TAXONOMY AND BIOLOGY: Achlysiella species differ from Radopholus spp. in having sedentary swollen females producing a gelatinous matrix containing eggs, but no specialized nurse cells in the roots of plant hosts.

GEOGRAPHICAL DISTRIBUTION: Mauritius and New Guinea.

HOSTS: Sugar cane (Saccharum officinarum) and Saccharum spp.

CROP LOSSES: No information available.

MEANS OF MOVEMENT AND DISPERSAL:  Through root material and soil debris.

RATING:  (L) Achlysiella species share biological characteristics with migratory and sedentary endoparasitic nematodes. These biological peculiarities result in potential severe plant damage similar to Nacobbus species. A low priority rating was given to this nematode because its distribution is limited and economic damage caused by this nematode is not well documented.

REFERENCES:
    Hunt, D.J., J. Bridge, and J. E. Machon. 1989. On Achlysiella, a new genus of obese Pratylenchidae (Nematoda: Tylenchoidea. Revue de Nématologie 12:401-407.