Journal
NEMATOLOGY
Volume 19, Issue 9, Pages 1017-1034Publisher
BRILL
DOI: 10.1163/15685411-00003104
Keywords
Chiloplacus bathycolpus; Chiloplacus similis; D2-D3; molecular; morphology; new synonym; SEM; taxonomy
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Funding
- University of Jaen/Caja Rural Jaen Foundation [UJA2014/03/01]
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Two very similar species of the genus Chiloplacus, namely C. magnus and C. insularis, are re-described and compared based on type material as well as Iberian specimens. Relevant new information is obtained for their characterisation and for elucidating their identity with more accuracy. Special mention is deserved by the findings regarding: i) the morphology of the lateral field at vulval level; and ii) the location of the vulva, which is either midventral or subventral, two remarkable traits that were originally overlooked. Chiloplacus magnus is distinguished by having the left lateral field expanded at vulval level and the vulva displaced to a subventral position, whereas C. insularis displays the usual pattern of the genus. The evolutionary relationships of the Iberian C. magnus are explored by means of D2-D3 sequence analysis. Chiloplacus similis is regarded as identical to C. magnus and is proposed as a new junior synonym of the latter.
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