Phthinomita symplocos Nolan &amp; Cribb 2006, n. sp.
Creators: name: Nolan, Matthew J.
name: Cribb, Thomas H.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Trematoda
Diplostomida
Aporocotylidae
Phthinomita
Phthinomita symplocos

description: <i>Phthinomita symplocos</i> n. sp. (Figs. 8, 15–22) Type host: <i>Siganus lineatus</i> (Valenciennes), Goldlined Rabbitfish (Perciformes: Siganidae). Site in host: Intertrabecular spaces of ventricle (heart). Type locality: Lizard Island, northern Great Barrier Reef (14°40'S 145°27'E), Queensland. Material examined: ex <i>S</i>. <i>lineatus</i>, Lizard Island (QLD), May 2004, twenty­seven specimens (Holotype no. QM G 225528; Paratype nos. QM G 225529–225537) (another three specimens used for scanning electron microscopy and nineteen specimens sequenced for ITS2). Collector: M.J. Nolan. <i>Etymology</i> Specific name " <i>Symplokos</i> " (Gr. interwoven, involved), for the host­parasite system described here. <i>Description</i> Based on 27 whole mounts. With features of genus. Body slightly notched at male genital pore. Vestigial oral sucker bearing 5 concentric rows of fine spines. Intestine; posterior caeca irregular, distal portions expanded. Anterior testis originating posterior to intercaecal field, margins lobed, containing dorso­ventral muscle fibres. Posterior testis elliptical, margins lobed, rudimentary (may have sperm anteriorly, testis tissue posteriorly (see Figure 8a)). Vas deferens seen antero­dextral to posterior margin of anterior testis; duct from posterior testis passing antero­medially. Cirrus­sac tear­shaped. Internal seminal vesicle ovoid, occupying posterior of cirrus­sac; ejaculatory duct sinuous; prostatic cells not seen. Ovary spherical to ovoid, slightly overlapping posterior margin of anterior testis. Oviduct originating at posterior dorsal margin of ovary, dorsal to vas deferens, entering oötype postero­dorsally. Vitelline duct forming anterior to cirrus­sac, posteriorly dextral to vas deferens and cirrus­sac. Oötype ovoid. Mehlis' gland extending anteriorly to posterior margin of cirrus­sac, extending posteriorly to anterior margin of posterior testis. Uterus extending from oötype sinuously, sinistral to oviduct. Uterine chamber forming posterior to posterior margin of ovary, sinuous, curving dorsally posteriorly to female pore. Vitelline follicles extending anteriorly past intestinal bifurcation, sinistral and dextral to oesophagus, posterior caeca and anterior testis, posteriorly extending to mid­section of uterine chamber. <i>Remarks</i> There are 7–35 base differences (1.9–10.7% sequence divergence) between the ITS2 rDNA sequence of <i>P. symplocos</i> <b>n. sp.</b> and the remaining <i>Phthinomita</i> species sequenced here. Between the sequences from <i>P</i>. <i>symplocos</i> from <i>S. lineatus</i> off Lizard Island (15 replicates) and <i>P. munozae</i> <b>n. sp.</b> from <i>C</i>. <i>venustus</i> off Heron Island (four replicates) there are seven bases different.
description: Published as part of <i>Nolan, Matthew J. &amp; Cribb, Thomas H., 2006, An exceptionally rich complex of Sanguinicolidae von Graff, 1907 (Platyhelminthes: Trematoda) from Siganidae, Labridae and Mullidae (Teleostei: Perciformes) from the Indo-west Pacific Region, pp. 1-80 in Zootaxa 1218 (1)</i> on pages 35-38, DOI: 10.11646/zootaxa.1218.1.1, http://zenodo.org/record/5064858