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& Das, 1978
Hemicaloosia was considered a junior synonym of
Caloosia by Raski and Luc (1987) but recognized as a valid taxon by
Siddiqi (2000) (Inserra et al., 2013).
Hemicaloosia spp are either amphimictic (with males and females
having s functional spermatheca) or non-amphimictic (lacking males anfd
females lacking a functional spermatheca)..
field nearly always present.
Monovarial, prodelphic, vagina sigmoid
Tail elongate, conoid to filiform.
covering more than
one-third of the tail.
Tail shorter than that of female.
Juvenile: Cuticle and labial area as in
Hemicaloosia spp differ from sheath nematodes (Hemicycliophora
spp.) in that the sheath is membranous and fits tight around the body rather
than detached and loose. The sheath in Hemicaloosia is actually the
outermost layer of the body cuticle rather thyan an extra cuticle (Inserra et
Hemicaloosia and Caloosia are very similar in the
configuration of the labial area, large amphids and a vagina vera with thick
Key to Species of Hemicaloosia See Inserra, et
The genus mainly contains warm-climate species from Asia, Africa and the
Americas (Inserra et al., 2013).
Inserra, R. N., Stanley, J.D., Troccoli, A., Chitambar, J., Subbotin, S.A.
2013. Hemicaloosia vagisclera n. sp. (Nematoda: Caloosiidae) from
Bermuda grass in Florida and its phylogenetic relationships with other
criconematids. Nematology 15: 23-39.
Raski, D.J. & Luc, M. (1987). A reappraisal of Tylenchina (Nematoda) 10. The
superfamily Criconematoidea Taylor, 1936. Revue de NÃƒÂ©matologie 10, 409-444.
Ray, S. & Das, S.N. (1978). Hemicaloosia americanae n. gen. n. sp.
(Nematoda: Hemicycliophoridae) from Orissa, India. Journal of Research,
OUAT, Bhubaneswar, India 8, 131-138.
Siddiqi, M.R. (2000). Tylenchida parasites of plants and insects, 2nd
edition. Wallingford, UK, CABI Publishing, 833 pp.