Character state-based taxa erected to accommodate fossil and extant needle stoneflies (Leuctridae - Leuctrida tax.n.) and close relatives

Autor(en)

Olivier Béthoux, Boris Kondratieff, Fridgeir Grimsson, Erling Ólafsson, Torsten Wappler

Abstrakt

In order to accommodate a newly discovered fossil specimen related to a subset of extant needle stoneflies (Leuctridae sensu Zwick, 2000), we provide a comparative analysis of the wing venation of these insects, and of their close relatives, primarily based on extant material. A number of character states potentially supporting monophyletic taxa are identified, and are used to erect taxon names under the cladotypic nomenclatural procedure. We introduce a new standard definition in which the mention

of the antonym of the defining character state is applied. The proposed taxa, and taxa inclusiveness, are as follows: Nemouromorpha>Capniida/Leuctrida/‘Nemouridae s.l.’, and Leuctrida>Exeleuctrida>Mioleuctrida & Eleuctrida>Collaleuctrida. This

scheme allowed us to tentatively accommodate several fossil species described earlier and the new specimen, left undetermined at the genus and species levels, but assigned to Collaleuctrida. To optimize retrieval of hierarchical information, we introduce the use

of ‘nec’ (Latin for ‘but not’) into the taxonomic address to indicate exclusion from a taxon. For example, Mioleuctrida nec Collaleuctrida †yehae indicates that †yehae can be assigned to Mioleuctrida but can also be conclusively excluded from Collaleuctrida. Based on the investigated case, it is finally argued that the cladotypic nomenclatural procedure is optimal regarding name use and numbers, and allows adequate treatment of homoplasy.

Organisation(en)

Institut für Paläontologie

Externe Organisation(en)

Université Paris IV - Paris-Sorbonne, Colorado State University, Icelandic Institute of Natural History, Rheinische Friedrich-Wilhelms-Universität Bonn

Journal

Systematic Entomology

Band

40

Seiten

322-341

Anzahl der Seiten

20

ISSN

0307-6970

DOI

https://doi.org/10.1111/syen.12102

Publikationsdatum

04-2015

Peer-reviewed

Ja

ÖFOS 2012

105117 Paläobotanik

ASJC Scopus Sachgebiete

Insect Science, Ecology, Evolution, Behavior and Systematics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/039fbc28-0175-4506-bd78-17860a14999b