Hemicycliophora undefined-4

Subbotin, Sergei A., Chitambar, John J., Chizhov, Vlamidir N., Stanley, Jason D., Inserra, Renato N., Doucet, Marcelo E., Clure, Michael M, Ye, Weimin, Yeates, George W., Mollov, Dimitre S., Cantalapiedra-Navarrete, Carolina, Vovlas, Nicola, Berg, Esther Van Den & Castillo, Pablo, 2014, Molecular phylogeny, diagnostics, and diversity of plant-parasitic nematodes of the genus Hemicycliophora (Nematoda: Hemicycliophoridae), Zoological Journal of the Linnean Society 171 (3), pp. 475-506 : 492

HEMICYCLIOPHORA SP. 4

( FIGS 2D, I, N, S 15; TABLES 1, S7)

This species is characterized by a straight or slightly ventrally arcuate body, cuticular sheath loosely fitting body, lateral fields marked by breaks and anastomoses throughout body, sometimes with a central longitudinal line, annuli outside lateral field coarse or smooth, several anastomoses observed in anterior body region, lip region rectangular to truncate, or with slightly rounded anterior edges, and with three annuli, labial disc not protruded or slightly elevated, vulval lips modified, about one annulus long, vulval sleeve about one annulus long, tail cylindrical then abruptly curved dorsally in posterior third with less to no curvature ventrally, continuing to an attenuated narrow conical, almost cylindrical posterior portion with rounded terminus. No males were found. This species has a wide distribution in the USA where it was detected at one site in California, North Carolina , and Texas and in three localities in Florida.

The species is similar to Hemicycliophora epicharoides but differs from it mainly by a more narrowly conical to cylindrical terminal portion of the tail, and larger values than those reported for R (241–254 vs. 144– 209), Rst (24–28 vs. 15–21), Roes (number of annuli between anterior end of body and pharynx base) (41– 46 vs. 33–42), Rex (46–49 vs. 32–41), RV (50–64 vs. 31–46), RVan (16–25 vs. 9–17), and Ran (number of annuli between posterior end of body and anus) (29– 39 vs. 20–33). This species is clearly different from H. epicharoides in the ITS and D2-D3 of 28S rRNA gene sequences.

Figures

Figure 2. Photomicrographs of specimens of populations of selected Hemicycliophora species. A–E, anterior region; F–J, lateral field: K–O, posterior region. A, F, K, Hemicycliophora floridensis (topotype, Florida, USA); B, G, L, Hemicycliophora poranga (California, USA); C, H, M, Hemicycliophora sp. 11 (Florida, USA), D, I, N, Hemicycliophora sp. 4 (North Carolina, USA); E, J, O, Hemicycliophora wyei (North Carolina, USA). Scale bars: A–E, K–O = 10 μm; F–J = 5 μm.