identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03DD87E5E912571A5995F92DBCD95032.text	03DD87E5E912571A5995F92DBCD95032.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pteronarcyoidea Newman 1853	<div><p>3.3. Pteronarcyoidea</p><p>3.3.1. † Cavoperlidae</p><p>† Cavoperla excavata Chen forms the monotypic family † Cavoperlidae Chen and is considered sister to Styloperlidae due to similarities in wing venation, the loss of giant tibial spurs, and elongated basal cercomeres in the males (Chen 2023b). However, no autapomorphies of Styloperlidae are preserved, such as a dense setal brush on sternite nine in males, an X-shaped sclerotization of sternite ten, or modified tibial setae (Chen 2023b, Uchida &amp; Isobe 1989, Zwick 2000). Contrarily, the laterally expanded arolium is an autapomorphy of Pteronarcyidae (Uchida &amp; Isobe 1989; Zwick 2000), and elongated basal cercomeres is an autapomorphy of Peltoperlinae (Chen et al. 2025; Zwick 2000). However, as other apomorphies of all families within Pteronarcyoidea are not present in this species, its relationship to any of the extant families cannot be confidently resolved (Chen 2023b).</p></div>	https://treatment.plazi.org/id/03DD87E5E912571A5995F92DBCD95032	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Kirkaldy, Abigail P.;Barber-James, Helen M.;Richoux, Nicole B.;Villet, Martin H.	Kirkaldy, Abigail P., Barber-James, Helen M., Richoux, Nicole B., Villet, Martin H. (2025): Literature review of the fossil record of Systellognatha (Insecta: Plecoptera) and its implications for the biogeography of the Order. Zootaxa 5716 (3): 301-332, DOI: 10.11646/zootaxa.5716.3.1, URL: https://doi.org/10.11646/zootaxa.5716.3.1
