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AbstractLavareda decraemerae gen. n., sp. n. is characterised by acheilostom with a sclerotised ring bearing six anterior projections, afunnel-shaped to tubular stegostom, a large unispiral amphid with widegroove and males with a single precloacal setiform sensillum and 19 tubularsupplements in a continuous series. The new species is similar toCricolaimus coronatus in having the cheilostomconsisting of a cuticularised ring with anterior projections. Re-examinationof C. elongatus revealed clear differences to the newspecies, the former showing a bilateral symmetry anteriorly with a lateralaxis: the lips are merged into one large dorsal and one large ventral lipwith elongated inner and outer labial sensilla and the cheilostom has acuticularised oblique ring, higher dorsally and ventrally than laterally,with two anteriorly directed claw-like projections, one mid-dorsal and onemid-ventral, whereas the new species has a radial symmetry with low lipswith inner and outer labial papillae indistinct and a cheilostom with acuticularised ring with six anteriorly directed projections, therebyjustifying the proposal of Lavareda gen. n. to accommodatethe new species from Brazil and L. coronatus comb. n. (=C. coronatus). An emended diagnosis ofCricolaimus is given. This is the first record of aspecies belonging to the Rhadinematidae colonising an artificialsubstrate.
Nematology – Brill
Published: Jan 1, 2011
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