Ophidascaris arndti, Sprehn, 1929
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publication ID |
https://doi.org/ 10.1016/j.ijppaw.2022.11.003 |
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persistent identifier |
https://treatment.plazi.org/id/C70587F2-2976-AE05-3A70-FF62FDBFFC82 |
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treatment provided by |
Felipe |
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scientific name |
Ophidascaris arndti |
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3.1. Morphological description of Ophidascaris arndti
3.1.1. General
Medium to large nematodes. Cuticle with fine longitudinal striations along the body ( Fig. 2A View Fig ). Anterior extremity with three slightly quadrangular lips, approximately equal in size, with deep postlabial grooves and prominent lateral membraneous flanges ( Figs. 1A View Fig and 2B View Fig ). Presence of indentations or dentigerous ridges in the internal border, medio apical notch ( Fig. 2B and C View Fig ). Dorsal lip with a pair of double papillae ( Figs. 1B View Fig and 2B View Fig ) and lateroventral lips with one double papilla, small papilla, and amphid ( Figs. 1B View Fig , 2B and 2D View Fig ). Each lip with two pointed depressions ( Fig. 2B View Fig ). Presence of well-developed interlabia,
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triangular, approximately 1/3 length of lips ( Fig. 2B View Fig ). A pair of small pores present symmetrically on each lip just external to the ridge ( Fig. 2B View Fig ). Excretory pore situated ventrally ( Fig. 2A View Fig ). Male ventrolateral posterior region with row of papillae ( Figs. 1C View Fig and 3A View Fig ). Tail of both sexes conical, female tip unornamented ( Fig. 1D View Fig ).
Male: Body length 9.13–17.77 long (N = 2), width 0.29–0.34 (N = 3). Lips 0.07–0.30 long and 0.08–0.28 wide (N = 4). Esophagus 1.07–2.06 long (N = 4). Nerve ring and excretory pore 0.48 (N = 1) and 0.31–0.47 (N = 2) from anterior end, respectively. Spicules slightly subequal, alate 1.13–1.47 (N = 3) ( Fig. 1E View Fig ). Difference between spicules 0.04 (N = 2).
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Caudal alae narrow. Presence of 22 pairs of precloacal papillae, 1 paracloacal pair, 4 postcloacal pairs, and distally small phasmids ( Fig. 3A, B, and 3C View Fig ). Cloaca 0.18-0-30 long (N = 3) from the posterior end. Tail 0.031 –0.043 long (N = 2) ( Fig. 3C View Fig ).
Female: Body length 30.75–58.98 (N = 4), width 5.52–2.60 (N = 2). Lips 0.07–0.30 long and 0.22–0.29 wide (N = 4). Esophagus 2.17–3.46 long (N = 4). Nerve ring and excretory pore 0.38–0.42 (N = 2) and 0.56–0.58 (N = 2) from anterior end, respectively. Vulvar aperture in the anterior middle of body 10.63–11.37 long (N = 2). Uterus divided into two branches ( Fig. 1F View Fig ). Eggs subspherical 0.076 –0.084 long, 0.06–0.07 wide (N = 5). Anus 0.40–0.46 (N = 4) from the posterior end. Tail 0.11–0.32 long (N = 4) with digitiform tip ( Fig. 3D View Fig ). Small lateral phasmids at the base of the tail tip ( Fig. 1D View Fig ).
3.1.1.1. Larvae (L 3): based on 4 specimens. Medium-size, white in color with cuticle striated transversely ( Figs. 4A View Fig and 5A View Fig ). Body length 18.73–29.81 (N = 3) and width 0.54–0.81 (N = 3). Oral opening rounded with underdeveloped lips, four double papillae, and two amphids ( Fig. 4B and C View Fig ). Nerve ring and excretory pore 0.35–0.46 (N = 4), 1.16 (N = 1) from the anterior end, respectively. Esophagus length 2.17–4.26 (N = 2). Genital primordium situated at posterior third of the body 10.14 (N = 1). Anus 0.15–0.28 (N = 3) from posterior extremity. Tail 0.05–0.06 long (N = 3) ( Figs. 4D View Fig and 5B View Fig ).
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