Paratrichodorus

Historically, Trichodorus formed the only genus in the Trichodoridae family. Then Trichodorus was split into two genera in 1974 by Siddiqi, Trichodorus and Paratrichodorus. The genus, which is the second largest in the family consists of 34 species.{{cite journal| pmc=2586508 | pmid=19259501 | volume=39 | issue=4 | title=The who, what and where of longidoridae and trichodoridae | journal=J Nematol | pages=295–7 | last1 = Decraemer | first1 = W | last2 = Robbins | first2 = RT| year=2007 }} Siddiqi based the separation on the position of the gland nuclei and the type of pharyngo-intestinal junction.

Using the same characteristics as those establishing the genus, Siddiqi described three subgenera, Paratrichodorus, Atlantadorus and Nanidorus, but Decraemer did not support the validity of this.[http://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_5/pt5/nemato/21369.pdf Decraemer, W. 1980. Systematics of the Trichodoridae (Nematoda) with keys to their species. Revue. Nematol. 3(1): 81-99.] While the latter approach has not been accepted by some authorities, Siddiqi elevated them to genus status in 1980,SIDDIQI, M.R. (1980). On the generic status of Atlantadorus Siddiqi, 1974 and Nanidorus Siddiqi, 1974 (Nematoda: Trichodoridae).

Systematic Parasitology 1, 151-152.{{sfn|Decraemer|1995|loc=[https://books.google.com/books?id=qW19ryMat_EC&pg=PA10 p. 10]}} an approach that few other authors have followed,{{sfn|Duarte et al.|2010}} but maintained by that author,{{cite journal | last1 = Siddiqi | first1 = M.R. | year = 2002 | title = Ecuadorus equatorius gen. n., sp. and Nanidorus mexicanus sp. n. (Nematoda: Trichodoridae) | journal = International Journal of Nematology | volume = 12 | pages = 197–202 }} and now receiving some support from modern molecular approaches to taxonomy. At least in the case of Nanidorus, phylogenetic analysis has supported its recognition as a separate genus, although clustering with Trichodorus rather than its parent Paratrichodorus.{{sfn|Duarte et al.|2010}}{{sfn|Kumari|Subbotin|2012}}

Trichorids became of interest in 1951.CHRISTIE, J. R. & PERRY, V. G. (1951). Removing nematodes from soil. Proc. helm. Soc. Wasb. 18: 106-108. At that time Trichodorus christie (=Paratrichodorus minor) was recognised as a pest of crops in Florida.{{sfn|Decraemer|1995|loc=[https://books.google.com/books?id=qW19ryMat_EC&pg=PA3 p. 3]}}

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Category:Enoplea genera

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