Spinicauda ciremaiensis, Dewi & Purwaningsih & Riyanto & Bursey, 2021

Dewi, Kartika, Purwaningsih, Endang, Riyanto, Awal & Bursey, Charles R., 2021, A new species of Spinicauda (Nematoda: Heterakidae) from Gonocephalus kuhlii (Reptilia: Agamidae) of Ciremai Mountain, Java-Indonesia, Zootaxa 4990 (2), pp. 394-400 : 395

Spinicauda ciremaiensis sp. nov.

( Figs. 1A–F ; 2A–F )

Description. General: Small worm, cuticle with transverse striations. Head set off from body by constriction, mouth with three large lips. Dorsal lip larger than either subventral lip; each subventral lip with one large conspicuous amphid, one large papilla and one small papilla near amphid; dorsal lip with two large papillae; each lip with anterior cuticular flanges at the anterior surface. Tip of lips with three ridges. Esophagus divided into short anterior pharynx, elongated, tubular and slender corpus, and large terminal pyriform bulb. Excretory pore at mid-length of esophagus. Numerous small somatic papillae scattered over body surface in male but few in female.

Male (n=10) –Total body length 3.84 (3.31–4.41) mm, width at midbody 285 (283–288). Head width 55 (52– 57), distance between amphids 31.8 (n=1). Nerve ring and excretory pore 263 (220–320) and 390 (320–460) from anterior end, respectively. Esophagus consisting of pharynx 49 (47–51) long; corpus 625 (640–668) long, 49 (48–52) wide; and bulb 165 (161–168) long, 149 (140–157) wide. Narrow lateral alae present, extending from level of nerve ring to near spike of tail. Diameter of precloacal sucker 29.7–32.6 (n=2), distance to posterior end 347 (332–388). Fourteen pairs of caudal papillae, variable in size: preanal papillae around the sucker (from anterior to posterior) consisting of 2 pairs large mammiliform; 4 pair small, 1 small pair at middle sucker and cloaca. Adanal papillae (from anterior to posterior): 1 pair small at anterior border of cloaca, 1 pair large at anterolateral boarder of cloaca, 1 pair small at mediolateral cloaca, 1 pair large mammiliform posterolateral cloaca, 1 very large mammiliform papillae at outer body of middle cloaca. Postanal papillae: 1 pair small ventro lateral and 1 pair small dorsolateral. Tail, curved ventrally, with terminal filament, length 195 (160–250). Gubernaculum boat-shaped, 126 (117–136) long, 42 (40–44) wide, weakly sclerotized. Accessory piece of gubernaculum present, sclerotized, fork-shaped, 36 (34–38) long and 27 (26–28) wide. Spicules similar and equal, flattened, arcuate with sharply pointed end, length 633 (580–670) representing 16.5% (15.2–17.5)% of total body length.

Female (n=10): Body length 4.47 (3.55–5.10) mm, maximum width 331 (300–388). Head width 58 (55–62). Nerve ring and excretory pore 267 (230–300) and 370 (340–440) from anterior end, respectively. Esophagus consists of pharynx 51 (45–58) long; corpus 670 (580–790) long, 52 (49–56) wide; and bulb 160 (152–172) long, 152 (150– 168) wide. Vulva 1.50 (1.30–1.60) mm from anterior end, uterus parallel. Tail 359 (280–420) long. Lateral alae present extending from level of nerve ring to end of tail. Eggs oval, thick shelled, 59.2 (56.8–60.3) x 39 (38.9–41.5).

Figures

FIGURE 1. A.Male anterior portion (lateral view); B. En face; C. Female posterior portion (lateral view); D. Egg; E. Male posterior portion (ventral view); F. Gubernaculum and accessory piece of gubernaculum (lateral view); G. Spicula. Scale bars: A, C, E, G: 100 μm; B, D: 20 μm; F: 50 μm

FIGURE 2. A. En face; B. Tip of lips with three ridges; C. Female posterior (lateral view); D. Male tail tip; E. Male posterior with spicule protruding from cloaca, gubernaculum, and accessory piece of gubernaculum (ventral view); F. Male tail (lateral view). Scale Bars: A, D: 20 μm; B: 5 μm; C: 100; μm; E: 50 μm; F: 30 μm.