Nothocriconemoides hangzhouensis, Maria & Miao & Cai & Castillo & Zheng, 2020

Maria, Munawar, Miao, Wentao, Cai, Ruihang, Castillo, Pablo & Zheng, Jingwu, 2020, A new rare nematode Nothocriconemoides hangzhouensis n. sp. (Nematoda: Criconematidae) from Hangzhou, China, Journal of Nematology 52 (1), pp. 1-14 : 3

NOtHOCriCONemOideS HaNGZHOUeNSiS n. sp. ( Figs 1–4 ; Table 1).

DesCriptiOn

Females

Body is slightly curved ventrally after heat-killing. Body annuli are wide (13-17µm thick in the middle of the body) with fine longitudinal striations that look like annulus bearing rough cuticular margins. Anastomoses are 2 to 3, located at the posterior half of the body. The first cephalic annulus is rounded and expanded enclosing the lip region. The second annulus narrow, offset, collar like. EN FaCe view shows a central elevated labial disk bearing four equal-sized submedian lobes and “I”-shaped oral aperture. Stylet is robust with anchor-shaped basal knobs, and DGO indistinct. Esophageal lumen is looped in median esophageal bulb having a medium-sized valvular apparatus. Isthmus is narrow, short, encircled by nerve ring, and basal esophageal bulb distinct. Excretory pore is 3 to 4 annuli posterior to esophageal bulb. Monodelphic gonad is outstretched, and spermatheca is spherical, filled with sperm. Vagina is straight, vulva is closed, and vulval lips do not project above body contour. The ventral side of postvulval annuli is inverted, in majority of individuals. Anus is indistinct and located on the next annuli posterior to vulva. Tail is short and conoid, longitudinal striations are more prominent on the terminal annulus that gives the appearance of forked or branched terminus.

Male

Not found.

Figures

Figure 1: Line drawings of NOtHOCriCONemOideS HaNGZHOUeNSiS n. sp. Female A: esophageal region; B: Cepahlic region; C: EN FaCe view: D-F: Cuticle markings; G: Tail region under SEM; H: Tail region under LM; I: Cepahlic region of juvenile: J: Crenation on cuticle of juvenile; K: Tail region of juvenile. (Scale bars= A=50µ m, B-I=10 µ m).

Figure 2: Light photomicrographs of NOtHOCriCONemOideS HaNGZHOUeNSiS n. sp. Female A: Entire body; B-E: Cepahlic regions; F-H: Esophageal regions, arrow pointing on the excretory pore (exp): I-K: Cuticle markings; L-O: Tail regions, arrows pointing on vulva (v) and anus (a). (Scale bars=A=50µm, B-I=10µ m).

Figure 3: Light photomicrographs of NOtHOCriCONemOideS HaNGZHOUeNSiS n. sp. Juvenile A: Entire body; B: Cepahlic region; C,D: Esophageal regions: E: Crenation on cuticle; F, G: Tail regions, arrows pointing on anus (a). (Scale bars=A=50µm, B-I=10µ m).

Figure 4: Scanning electron microscopy of NOtHOCriCONemOideS HaNGZHOUeNSiS n. sp. Female. A: Entire body; B-D: En face view; E: Cuticle markings; F-H: tail regions arrows pointing on vulva (v) and anus (a) (Scale bars, A= 100µm; B, C=10µ m; D, H=20µ m; G-F=30µ m).