Floriparicapitus, a New Genus of Lecanicephalidean Tapeworm (Cestoda) from Sawfishes (Pristidae) and Guitarfishes (Rhinobatidae) in the Indo-West Pacific

Abstract

This is the published version of the article, made available with the permission of the publisher. The original published version can be found at the link below. Janine N. Caira, Ph.D.Order of Authors Secondary Information:Abstract: Floriparicapitus n. gen. (Cestoda: Lecanicephalidea), with F. euzeti n. gen. n. sp. as its type, is erected to house 3 new tapeworm species and 2 known species that are transferred to the new genus, all parasitizing sawfishes and guitarfishes (order Rhinopristiformes) in Indo-Pacific waters. The new genus differs from the 20 valid lecanicephalidean genera in its possession of a large scolex bearing a laterally expanded apical organ in the form of a rugose sheet in combination with a cirrus conspicuously armed with spinitriches and 3 pairs of excretory vessels. It most closely resembles Lecanicephalum, but differs conspicuously in its possession of 3, rather than 1, pair of excretory vessels. Two new species are described from sawfishes: Floriparicapitus euzeti n. sp., from Pristis clavata and Floriparicapitus juliani n. sp. from Pristis microdon, both from Australia. Floriparicapitus plicatilis n. sp. is described from the guitarfish Glaucostegus typus in Australia and the guitarfish Glaucostegus thouin in Malaysian Borneo. Two species formerly assigned to Cephalobothrium are transferred to the new genus; Floriparicapitus variabilis (Southwell, 1911) n. comb. from the sawfish Anoxypristis cuspidata in Sri Lanka and Floriparicapitus rhinobatidis (Subhapradha, 1955) n. comb. from the guitarfish Glaucostegus granulatus in India. The species from guitarfish differ conspicuously from those parasitizing sawfish in their possession of only 4 (F. plicatilis n. sp.) or 5 (F. rhinobatidis n. comb.) testes per proglottid, versus 9 or more in the 3 sawfish-parasitizing species. The latter 3 species differ from one another in scolex width, acetabular size, number of proglottids, and cirrus sac size. As it stands, the new genus appears to be restricted to a subclade of the Rhinopristiformes consisting of the sawfishes and species of Glaucostegus. Powered by Editorial Manager® and ProduXion Manager® from Aries Systems Corporation

A new genus of rhinebothriidean cestodes from batoid elasmobranchs, with the description of five new species and two new combinations

“…The present study contributes to a growing body of knowledge of elasmobranch cestodes by reporting on species of Rhinebothriinae New genus 3 from 17 species of elasmobranchs, nearly all of which have been reported as hosts for other cestode genera and species (see Euzet 1954, Butler 1987, Reyda and Caira 2006, Twohig et al 2008, Ivanov and Caira 2012, Schaeffner and Beveridge 2012, Mojica et al 2013, Cielocha et al 2014, Jensen and Russell 2014, Ruhnke et al 2015. Most such reports are fairly recent and were the result of the same survey efforts that made the present study possible.…”

When proglottids and scoleces conflict: phylogenetic relationships and a family-level classification of the Lecanicephalidea (Platyhelminthes: Cestoda)

“…Hexacanalis and Floriparicapitus (see Cielocha et al, 2014). Although noting that T. 648 koenneckeorum was generally consistent with the diagnosis of Stoibocephalum, Cielocha and 649 Jensen (2013) refrained from transferring it to Stoibocephalum until the condition of its excretory 650 vessels (originally described as "greater than two pairs" by Jensen, 2005; pg.…”

A new genus and two new species of lecanicephalidean tapeworms from the striped panray, Zanobatus schoenleinii (Rhinopristiformes: Zanobatidae), off Senegal

“…Remarks. Its unusually biloculated bothridia readily distinguishes Zanobatocestus gen. n. from the 21 valid lecanicephalidean genera (see Cielocha et al 2014), all of which exhibit acetabula that, regardless of whether they are in the form of suckers or bothridia, are uniloculate.…”