Caenorhabditis remanei is a gonochoristic (male-female) species closely related to C. elegans (i.e., a fellow member of the Elegans group).
Some earlier studies of non-elegans species occasionally misidentified C. remanei as "C. vulgaris", or confused C. remanei with C. brenneri (itself formerly known as C. sp. 4, "CB5161", "PB2801", etc.).
C. remanei has the following Web sources of information:
4. A WormBook review of Caenorhabditis ecology (including that of C. remanei).
Sex Determination: gonochoristic
Haploid No. chromosomes: 6 (5 autosomes, XO)