taxonID	type	description	language	source
03FC603691119B1797A6941A6C79857F.taxon	discussion	REMARKS The relationships of the Blattinopsidae with the remaining neopteran insects are not settled. Among recent accounts, Prokop et al. (2014), followed byQuispe et al. (2022), assigned the family to the order Paoliida Rohdendorf, 1977, itself regarded as closely related to dictyopterans (i. e. cockroaches, termites and mantises) by the former authors. On the other hand, Aristov & Rasnitsyn (2021), following Rohdendorf (1977), considered the family as the sole member of the order Blattinopsida Rohdendorf, 1977 (also spelled ‘ Blattinopseida’ in the literature), itself understood as representing a remote stem-relative of one the three major neopteran lineages, or a combination of them. In regard of these controversies and of the fact that our knowledge on this group is actually very limited, I am in favour of adopting a cautious stand on the phylogenetic position of these insects.	en	Béthoux, Olivier (2026): One of the earliest stem-Plecoptera reassessed as a Blattinopsidae (Insecta). Geodiversitas 48 (10): 179-184, DOI: 10.5252/geodiversitas2026v48a10
03FC603691139B17953C90D06A79853E.taxon	description	(Fig. 1)	en	Béthoux, Olivier (2026): One of the earliest stem-Plecoptera reassessed as a Blattinopsidae (Insecta). Geodiversitas 48 (10): 179-184, DOI: 10.5252/geodiversitas2026v48a10
03FC603691139B17953C90D06A79853E.taxon	materials_examined	TYPE MATERIAL. — Holotype. France • 1 specimen (hindwing); Hauts-de-France, Pas-de-Calais, Avion, Terril n ° 7 (also known as ‘ Terril n ° 76, 7 de Liévin’); 50 ° 24 ’ 00 ” N, 2 ° 49 ’ 07 ” E; Pas-de-Calais basin; Carboniferous, Middle Pennsylvanian, Moscovian; Patrick Roques leg.; MNHN. F. A 70112 (Roques coll.; Fig. 1 C, D). ADDITIONAL MATERIAL. — France • 1 specimen (forewing); same data as for the holotype; MNHN. F. A 71321 (holotype of Avionblattinopsis oudardi Quispe, Roques, Garrouste & Nel, 2022; Roques coll.; Fig. 1 A, B). TYPE LOCALITY AND STRATIGRAPHY. — ‘ Terril n ° 7 ’, Avion, Pas-de-Calais, France; Moscovian (Middle Pennsylvanian, Carboniferous).	en	Béthoux, Olivier (2026): One of the earliest stem-Plecoptera reassessed as a Blattinopsidae (Insecta). Geodiversitas 48 (10): 179-184, DOI: 10.5252/geodiversitas2026v48a10
03FC603691139B17953C90D06A79853E.taxon	diagnosis	DIAGNOSIS. — In both fore- and hindwing: first fork of M in a basal position, opposite (or nearly opposite) the first fork of RP (commonly located in a distal position, or even absent, in Blattinopsidae); area between CuP and the first AA vein comparatively broad (narrow in Glaphyrophlebia spp. and Blattinopsis spp.); occurrence of a single, well-delimited intercalary vein in each inter-veinal area between the anterior-most branch of RP and the posterior-most branch of CuA (a trait putatively shared with most Glaphyrophlebia spp. and Stephanopsis spp.). Forewing: ScP-R / RA area not particularly broad (commonly broad in other Blattinopsidae); RA-RP area broad (commonly narrow in other Blattinopsidae); longitudinal furrows between RP and M branches absent (present in at least some Glaphyrophlebia spp.); area between the first and second AA veins very broad. Hindwing: CuA with a clear, deep fork; RP, from its origin to its first fork, long.	en	Béthoux, Olivier (2026): One of the earliest stem-Plecoptera reassessed as a Blattinopsidae (Insecta). Geodiversitas 48 (10): 179-184, DOI: 10.5252/geodiversitas2026v48a10
03FC603691139B17953C90D06A79853E.taxon	discussion	REMARKS The hindwing morphology of Blattinopsidae is incompletely documented yet. Therefore, character states proposed as specifically diagnostic of this organ should be regarded as tentative. As already pointed out by Quispe et al. (2022), the unusual combination of features displayed by the species justifies assigning it to a distinct genus. A species overall similar to Avionblattinopsis oudardi n. comb. is Stephanopsis testai Dvořák, Krzemiński & Prokop, 2023 (see Dvořák et al. 2023), known from a forewing from the Moscovian Mazon Creek locality. The two species differ in the width of the RA-RP area, of the areas between AA veins, and in the shape of the apex.	en	Béthoux, Olivier (2026): One of the earliest stem-Plecoptera reassessed as a Blattinopsidae (Insecta). Geodiversitas 48 (10): 179-184, DOI: 10.5252/geodiversitas2026v48a10
03FC603691139B179541917F6CDB84D9.taxon	type_taxon	TYPE SPECIES. — Avionblattinopsis oudardi Quispe, Roques, Garrouste & Nel, 2022, thereafter regarded as a junior synonym and junior homonym of Avionblattinopsis oudardi (Schubnel, Perdu, Roques, Garrouste & Nel, 2019), n. comb.	en	Béthoux, Olivier (2026): One of the earliest stem-Plecoptera reassessed as a Blattinopsidae (Insecta). Geodiversitas 48 (10): 179-184, DOI: 10.5252/geodiversitas2026v48a10
03FC603691139B179541917F6CDB84D9.taxon	diagnosis	DIAGNOSIS. — By monotypy, same as for the type species.	en	Béthoux, Olivier (2026): One of the earliest stem-Plecoptera reassessed as a Blattinopsidae (Insecta). Geodiversitas 48 (10): 179-184, DOI: 10.5252/geodiversitas2026v48a10
