Hypoechinorhynchus robustus sp. n. from Notolabrus parilus (Labridae) from Western Australia with a discussion on the validity of the Hypoechinorhynchidae (Acanthocephala: Palaeacanthocephala)

Title:

Hypoechinorhynchus robustus sp. n. from Notolabrus parilus (Labridae) from Western Australia with a discussion on the validity of the Hypoechinorhynchidae (Acanthocephala: Palaeacanthocephala)

Creator:

Pichelin, Sylvie

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:eff01bc3-e07e-4554-ba5f-4476ccb1008f
uuid:eff01bc3-e07e-4554-ba5f-4476ccb1008f
urnnbn:urn:nbn:cz:aba007-000dsg

Subject:

Acanthocephala, Hypoechinorhynchus robustus, Hypoechinorhynchidae, Arhythmacanthidae, Notolabrus, Labridae, Australia, and taxonomy

Type:

model:internalpart and TEXT

Format:

print

Description:

Hypoechinorhynchus robustus sp. n. is described from Notolabrus parilus (Richardson) (Labridae) from Pt Peron, Western Australia. It has a proboscis with 30 hooks arranged in ten longitudinal rows: 5 rows of a small apical spine, a large anterior hook and a small posterior spine, 5 rows of a large anterior hook, a middle spine and a posterior spine. The new species is distinguished from other species of the genus by having a set of 5 small apical spines anterior to the large hooks on the proboscis, by having lemnisci that barely exlend beyond the proboscis receptacle and testes which are more adjacent than tandem. II. robustus also has robust trunk spines anteriorly. Re-examination of Hypoechinorhynchus alaeopis Yamaguti, 1939 (type species) revealed trunk spines that had been overlooked previously. The Hypoechinorhynchidae is made a junior synonym of Arhythmacanthidae because there is considerable overlap between the two family diagnoses, particularly in that both families have a proboscis armature that changes abruptly from small basal spines to large apical (or subapical if present) hooks. The genus Hypoechinorhynchus is placed in the subfamily Arhythmacanthinae because it has trunk spines and a spherical proboscis with few hooks (relative to other arhythmacanthid genera). It is also proposed that Ileterosentis magellanicus (Szidat, 1950) be returned to the genus Hypoechinorhynchus since it was transferred to Heterosentis primarily because it had trunk spines. The other hypoechinorhynchid genus contained only Bolborhynchoides exiguus (Achmerov el Dombrowskaja-Achmcrova, 1941) Achmerov, 1959 and is relegated to incertae sedis.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

311-315 and 73-77

Source:

Folia parasitologica | 1999 Volume:46 | Number:4

Harvested from:

CDK

Metadata only:

false