Dactylogyrus pisolabrae Cloutman &amp; McAllister &amp; Robison 2020, n. sp.
Creators: name: Cloutman, Donald G.
name: McAllister, Chris T.
name: Robison, Henry W.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Monogenea
Dactylogyridea
Dactylogyridae
Dactylogyrus
Dactylogyrus pisolabrae

description: <i>Dactylogyrus pisolabrae</i> n. sp. (Figs. 1–10) <i>Description:</i> With characters of the genus as emended by Mizelle and McDougal (1970). Body with thin tegument; 473 (440–520, 4) long, greatest width 101 (100–104, 4). Two pairs of anterior cephalic lobes. Head organs not observed. Two pairs of eyes, equal in size and approximately the same distance apart. Pharynx circular, diameter 26 (24–28, 4). Peduncle 16 (10–20, 4) long, 64 (55–70, 4) wide. Haptor 74 (70–76, 4) long, 88 (76–98, 4) wide. Dorsal anchor composed of solid base with short deep root, elongate superficial root, solid elongate shaft curving to a sharp point; 35 (35–36, 4) long; greatest width of base 16 (14–17, 4); deep root 3 (3–4, 4) long; superficial root 13 (12–14, 4) long. Ventral anchor (4A) 6 (5–6, 3) long. Dorsal bar gently curved with knobs on each end; 32 (30–36, 4) long. Ventral bar a crooked rod pointed at both ends; 16 (15–16, 4) long. Fourteen hooks (7 pairs), similar in shape. Each hook composed of solid base, solid slender shaft, sickle-shaped termination provided with opposable piece. Hook lengths: nos. 1, 17 (13– 19, 4); 2, 28 (26–30, 4); 3, 31 (28–32, 4); 4, 30 (28–33, 4); 5, 22 (21– 22, 4); 6, 21 (19–22, 4); 7, 23 (21–24, 4). Copulatory complex composed of male copulatory organ and non-articulated accessory piece. Male copulatory organ with large base bearing robust, tubular, sickle-shaped shaft; total length 38 (36–40, 4) long. Accessory piece solid, biramous; medial process a triangular blade at approximately midlength; distal ramus hooked at the tip to a sharp point; proximal portion of accessory piece with 2 flattened, wing-like projections opposite each other; total length 38 (36–40, 4). Vagina sclerotized. Vitellaria distributed from pharynx to haptor. Taxonomic summary <i>Synonym:</i> <i>Dactylogyrus</i> sp. (McAllister et al., 2017). <i>Type host:</i> <i>Moxostoma pisolabrum</i> Trautman and Martin, Pealip Redhorse. <i>Type locality:</i> Oklahoma: Cherokee County, Illinois River, Arkansas River System (35°56 <i> ′</i> 34.4724 <i> ′′</i> N, 94°54 <i> ′</i> 44.2152 <i> ′′</i> W). <i>Materials deposited:</i> Holotype, HWML 216232; 3 paratypes, HWML 216233. <i>Site of infection:</i> Gills. <i>Prevalence, mean intensity</i> ± <i>standard deviation, and range of infection:</i> 1 of 2 infected (prevalence 50%, mean intensity 4.0 ± 0.0, range ¼ 4). <i>ZooBank registration:</i> urn:lsid:zoobank.org:act: E5C4B7D1- 78F3-4ED3-AA9C-B957356D2163 <i>Etymology: Dactylogyrus pisolabrae</i> is named after its only known host, <i>Moxostoma pisolabrum</i>. Remarks <i>Dactylogyrus pisolabrae</i> is morphologically most similar to <i>Dactylogyrus apos</i> Mueller, 1938; <i>Dactylogyrus atripinnei</i> Timmons and Rogers, 1977; <i>Dactylogyrus duquesnei</i> Mueller, 1938; and <i>Dactylogyrus niger</i> Rogers and Mizelle, 1966, all parasitizing some species of suckers (Catostomidae) (Hoffman, 1999), by possessing a robust, sickle-shaped male copulatory organ (Mueller, 1938; Rogers and Mizelle, 1966; Timmons and Rogers, 1977). It differs from these and all other species of North American <i>Dactylogyrus</i> by possessing 2 unique flattened, winglike projections opposite each other on the proximal portion of the accessory piece.
description: Published as part of <i>Cloutman, Donald G., McAllister, Chris T. &amp; Robison, Henry W., 2020, Dactylogyrus Pisolabrae N. Sp. (Monogenoidea: Dactylogyridae) Parasitizing The Pealip Redhorse, Moxostoma Pisolabrum (Teleostei: Catostomidae), From Oklahoma, U. S. A., pp. 53-55 in Journal of Parasitology (J. Parasitol.) (J. Parasitol.) 106 (1)</i> on page 54, DOI: 10.1645/19-133, http://zenodo.org/record/7746690
description: {"references": ["MCALLISTER, C. T., D. G. CLOUTMAN, A. CHOUDHURY, AND H. W. ROBISON. 2017. Noteworthy records of helminth (Monogenoidea, Cestoda, Nematoda) and crustacean (Copepoda) parasites from Pealip Redhorses, Moxostoma pisolabrum (Catostomidae), from Oklahoma. Proceedings of the Oklahoma Academy of Science 97: 50 - 53.", "MUELLER, J. F. 1938. Additional species of North American Gyrodactyloidea (Trematoda). American Midland Naturalist 19: 220 - 235.", "HOFFMAN, G. L. 1999. Parasites of North American freshwater fishes, 2 nd ed. Comstock Publishing Associates, Ithaca, New York, 539 p."]}