Ototyphlonemertes macintoshi Diesing 1863
Creators: name: Kajihara, Hiroshi
name: Tamura, Kotaro
name: Tomioka, Shinri
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Nemertea
Enopla
Monostilifera
Ototyphlonemertidae
Ototyphlonemertes

description: Ototyphlonemertes (macintoshi) ani Chernyshev, 2007
(Fig. 7)
Ototyphlonemertes (Norenburgia) ani Chernyshev, 2007: 196–199, figs 1, 2.
Ototyphlonemertes lactea (not of Corrêa 1954): Leasi et al. 2016: 1393, fig. 4a, network L3 (139, 160, 180).
Material examined. Eight specimens, all from Dam Ngoai; ICHUM 5357–5364.
Description. Body length 4.3–11.0 mm, width 0.3– 0.4 mm (n =8). Epidermis whitish (Fig. 7A), containing red pigment cells sporadically scattered among other epidermal cells; cephalic furrow post-cerebrally; tissues around brain reddish; cirri not found on cephalic region (n =5), 5–7 cirri found near hind end of body (n =3). Foregut-intestine junction distinct (Fig. 7A, B). Statoliths polygranular (Fig. 7 C–J), 10.9–14.7 µm in diameter (n =8), consisting of about 22 granules; statocyst 20.9–30.4 µm in diameter (n =8); additional statolith found in one specimen on single side (Fig. 7C). Proboscis anterior chamber with tactile papillae (Fig. 7L); diaphragm long (Fig. 7K, L); two accessory-stylet pouches, lateral to central-stylet basis; 2–6 accessory stylets per pouch (n =8 individuals ×2 pouches), with mode being 5 (three individuals having 5 accessory stylets in each pouch; one individual with 4 and 5 accessory stylets, another with 5 and 6 accessory stylets); of 69 accessory stylets in 8 specimens, 2 in one specimen directed forward, other 67 directing backward; central stylet (as well as accessory stylets) spiral (Fig. 7M), 28.5–46.2 µm long; basis 27.7–33.3 µm long, 4.1–6.5 µm wide (n =8), with each ridge twisting almost only once; basis length/width ratio 4.58–6.5; middle chamber antero-posteriorly elongated rectangle (Fig. 7K), with prominent diagonal muscle fibers (Fig. 7L); posterior chamber vesicular, without specialized anterior portion. Intestinal diverticula shallow and sack-like. Posterior adhesive plate with pale brown pigments.
Distribution. Tche Bay (12°35′N, 109°20′E), Hong- Long Island, Van Phong Bay, Vietnam (Chernyshev 2007); Dam Ngoai, Vietnam (present study); Gesashi, Okinawa, Japan (Leasi et al. 2016); Shirahama, Japan (Leasi et al. 2016).
Remarks. In the molecular phylogenetic tree, O. (macintoshi) ani was nested within a clade comprised of other OTUs representing the O. macintoshi species group (Fig. 3). The GenBank COI sequences KU230129 and KU230131 (from Shirahama, Japan: Leasi et al. 2016), as well aKU230130 (from Gesashi, Okinawa, Japan: Leasi et al. 2016), all identified as Ototyphlonemertes lactea, turned out to represent O. (macintoshi) ani. It was the most abundant species in this study.
description: Published as part of Kajihara, Hiroshi, Tamura, Kotaro & Tomioka, Shinri, 2018, Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam, pp. 13-37 in Species Diversity 23 (1) on pages 22-24, DOI: 10.12782/specdiv.23.13, http://zenodo.org/record/4583901