A new genus and two new species of unarmed hymenolepidid cestodes (Cestoda: Hymenolepididae) from geomyid rodents in Mexico and Costa Rica

Scott L. Gardner; Altangerel T. Dursahinhan; Mariel L. Campbell; S. Elizabeth Rácz

doi:10.11646/zootaxa.4766.2.5

A new genus and two new species of unarmed hymenolepidid cestodes (Cestoda: Hymenolepididae) from geomyid rodents in Mexico and Costa Rica

Scott L. Gardner, Altangerel T. Dursahinhan, Mariel L. Campbell, S. Elizabeth Rácz

Biological Sciences

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Two new cestodes of the family Hymenolepididae are described from two species of rodents of the family Geomyidae collected in Mexico and Costa Rica. One new species of Hymenolepis is described from Cratogeomys planiceps Merriam 1895 from near Toluca, Mexico and another that we allocate to a new genus is described from Heterogeomys heterodus (Peters, 1865) from near Irazú Volcano, Costa Rica. Hymenolepis s. str. includes those Hymenolepididae with an apical organ, with no hooks on suckers or apical organ, and three testes. Hobergia irazuensis n. gen., n. sp. includes a hymenolepidid with an apical organ, unarmed scolex, small pockets termed foveolae, in which the suckers completely retract, and extremely bi-lobed ovary. Multivariate morphometric analysis showed good separation of these species from all other hymenolepidids possessing an apical organ and lacking a well developed rostellum and rostellar hooks in the Nearctic and Neotropical regions.

Original language	English (US)
Pages (from-to)	358-376
Number of pages	19
Journal	Zootaxa
Volume	4766
Issue number	2
DOIs	https://doi.org/10.11646/zootaxa.4766.2.5
State	Published - Apr 20 2020

Keywords

Bilobed ovary
DAMA Protocol
Discriminant analysis
Hobergia irazuensis n. gen
Hobergia n. gen
Hymenolepididae
Hymenolepis cratogeomyos
Morphology
N. sp
New genus
New species

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Animal Science and Zoology

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10.11646/zootaxa.4766.2.5

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@article{8b22179b017c440fbdf144e60dcc2734,

title = "A new genus and two new species of unarmed hymenolepidid cestodes (Cestoda: Hymenolepididae) from geomyid rodents in Mexico and Costa Rica",

abstract = "Two new cestodes of the family Hymenolepididae are described from two species of rodents of the family Geomyidae collected in Mexico and Costa Rica. One new species of Hymenolepis is described from Cratogeomys planiceps Merriam 1895 from near Toluca, Mexico and another that we allocate to a new genus is described from Heterogeomys heterodus (Peters, 1865) from near Iraz{\'u} Volcano, Costa Rica. Hymenolepis s. str. includes those Hymenolepididae with an apical organ, with no hooks on suckers or apical organ, and three testes. Hobergia irazuensis n. gen., n. sp. includes a hymenolepidid with an apical organ, unarmed scolex, small pockets termed foveolae, in which the suckers completely retract, and extremely bi-lobed ovary. Multivariate morphometric analysis showed good separation of these species from all other hymenolepidids possessing an apical organ and lacking a well developed rostellum and rostellar hooks in the Nearctic and Neotropical regions.",

keywords = "Bilobed ovary, DAMA Protocol, Discriminant analysis, Hobergia irazuensis n. gen, Hobergia n. gen, Hymenolepididae, Hymenolepis cratogeomyos, Morphology, N. sp, New genus, New species",

author = "Gardner, {Scott L.} and Dursahinhan, {Altangerel T.} and Campbell, {Mariel L.} and {Elizabeth R{\'a}cz}, S.",

note = "Funding Information: We thank the students who worked so hard to collect pocket gophers in both Costa Rica and in Mexico all those years ago. Thanks to Mark S. Hafner, Robert M. Timm, and Never Bonino for sending the specimens of cestodes to SLG and then waiting all this time to see the results. This paper is dedicated to the memory of Dr. Robert L. Rausch, for without his encouragement and guidance, SLG would never have met Eric P. Hoberg. Part of this work was funded by NSF grants to SLG including (DEB-9621395, DEB-0097019, DBI-1458139, and DBI-1756397). Publisher Copyright: Copyright {\textcopyright} 2020 Magnolia Press",

year = "2020",

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day = "20",

doi = "10.11646/zootaxa.4766.2.5",

language = "English (US)",

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T1 - A new genus and two new species of unarmed hymenolepidid cestodes (Cestoda: Hymenolepididae) from geomyid rodents in Mexico and Costa Rica

AU - Gardner, Scott L.

AU - Dursahinhan, Altangerel T.

AU - Campbell, Mariel L.

AU - Elizabeth Rácz, S.

N1 - Funding Information: We thank the students who worked so hard to collect pocket gophers in both Costa Rica and in Mexico all those years ago. Thanks to Mark S. Hafner, Robert M. Timm, and Never Bonino for sending the specimens of cestodes to SLG and then waiting all this time to see the results. This paper is dedicated to the memory of Dr. Robert L. Rausch, for without his encouragement and guidance, SLG would never have met Eric P. Hoberg. Part of this work was funded by NSF grants to SLG including (DEB-9621395, DEB-0097019, DBI-1458139, and DBI-1756397). Publisher Copyright: Copyright © 2020 Magnolia Press

PY - 2020/4/20

Y1 - 2020/4/20

N2 - Two new cestodes of the family Hymenolepididae are described from two species of rodents of the family Geomyidae collected in Mexico and Costa Rica. One new species of Hymenolepis is described from Cratogeomys planiceps Merriam 1895 from near Toluca, Mexico and another that we allocate to a new genus is described from Heterogeomys heterodus (Peters, 1865) from near Irazú Volcano, Costa Rica. Hymenolepis s. str. includes those Hymenolepididae with an apical organ, with no hooks on suckers or apical organ, and three testes. Hobergia irazuensis n. gen., n. sp. includes a hymenolepidid with an apical organ, unarmed scolex, small pockets termed foveolae, in which the suckers completely retract, and extremely bi-lobed ovary. Multivariate morphometric analysis showed good separation of these species from all other hymenolepidids possessing an apical organ and lacking a well developed rostellum and rostellar hooks in the Nearctic and Neotropical regions.

AB - Two new cestodes of the family Hymenolepididae are described from two species of rodents of the family Geomyidae collected in Mexico and Costa Rica. One new species of Hymenolepis is described from Cratogeomys planiceps Merriam 1895 from near Toluca, Mexico and another that we allocate to a new genus is described from Heterogeomys heterodus (Peters, 1865) from near Irazú Volcano, Costa Rica. Hymenolepis s. str. includes those Hymenolepididae with an apical organ, with no hooks on suckers or apical organ, and three testes. Hobergia irazuensis n. gen., n. sp. includes a hymenolepidid with an apical organ, unarmed scolex, small pockets termed foveolae, in which the suckers completely retract, and extremely bi-lobed ovary. Multivariate morphometric analysis showed good separation of these species from all other hymenolepidids possessing an apical organ and lacking a well developed rostellum and rostellar hooks in the Nearctic and Neotropical regions.

KW - Bilobed ovary

KW - DAMA Protocol

KW - Discriminant analysis

KW - Hobergia irazuensis n. gen

KW - Hobergia n. gen

KW - Hymenolepididae

KW - Hymenolepis cratogeomyos

KW - Morphology

KW - N. sp

KW - New genus

KW - New species

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DO - 10.11646/zootaxa.4766.2.5

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AN - SCOPUS:85083444252

SN - 1175-5326

VL - 4766

SP - 358

EP - 376

JO - Zootaxa

JF - Zootaxa

IS - 2

ER -

A new genus and two new species of unarmed hymenolepidid cestodes (Cestoda: Hymenolepididae) from geomyid rodents in Mexico and Costa Rica

Abstract

Keywords

ASJC Scopus subject areas

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