Promonhystera papilla, Huang & Xu, 2024

Huang, Mian & Xu, Kuidong, 2024, Two new species of Promonhystera Wieser, 1956 (Nematoda: Monhysterida: Xyalidae) from the South China Sea, Zootaxa 5399 (2), pp. 130-140 : 134

Promonhystera papilla sp. nov.

( Figures 1–2 , Table 1 )

Type material. Holotype: one male on slide Sanya 01, Paratypes: two males and one juvenile on slide Baimajing 04.

Type locality and habitat. Holotype sampled in sublittoral of Sanya City , Hainan Province (19°54′09″N, 109°31′44″E), water depth about 5 m, muddy sediment and 0–2 cm section in the corer . Paratypes sampled in the intertidal zone of Baimajing , Hainan Province (19°57′46″N 110°25′48″E), muddy sediment and 0–2 cm section in the corer .

Etymology. The Latin adjective papilla refers to the distinct feature which males have: papilliform supplements.

Figures

FIGURE 1. Drawings of Promonhystera papilla sp. nov. male holotype (A–D). A. lateral view of pharyngeal region, showing the two circles of anterior setae, amphideal fovea and buccal cavity; B. lateral view of posterior portion, showing the long spicule, boot-shaped gubernaculum and papilliform supplements; C. entire view of male; D. high magnification drawing of spicules and gubernaculum.

FIGURE 2. Photos of Promonhystera papilla sp. nov. Male holotype (A-D). A. lateral view of anterior end, showing the circle of outer labial setae and cephalic setae and rounded amphideal fovea (arrow); B. lateral view of anterior end, showing funnel-shaped buccal cavity and the inner labial setae (arrow); C, lateral view of cloacal region, showing the three papilliform precloacal supplements (arrows 1–3) and one small postcloacal supplement (arrow 4); D. lateral view of cloacal region, showing the long spicules, gubernaculum and precloacal supplements (arrows). Scale bars: A, B, D: 30 µm; C: 20 µm.