taxonID	type	description	language	source
0385878DFFD1FFF02ED5FE64FBA03B75.taxon	description	1) Borissak Paleontological Institute of the Russian Academy of Sciences, Profsoyuznaya str. 123, Moscow 117997, Russia. 2) Natural History Museum, London, UK. E-mail: alex. rasnitsyn @ gmail. com 3) Cherepovets State University, Lunacharsky prospect 5, Cherepovets 162600, Vologda region, Russia. E-mail: danil _ aristov @ mail. ru Summary. Blattinopsis indefinitus Rasnitsyn et Aristov, sp. n. is described from the Lower Permian Fokina locality (the upper Burgukla subhorizont of the upper Kungurian Stage) in North-Western Siberia. It is the latest record of the genus Blattinopsis Giebel, 1867.	en	Rasnitsyn, A. P., Aristov, D. S. (2021): New species of the genus Blattinopsis Giebel, 1867 (Insecta: Blattinopsida: Blattinopsidae) from the Permian of Taimyr Peninsula, Russia. Far Eastern Entomologist 437: 6-9, DOI: 10.25221/fee.437.2, URL: http://dx.doi.org/10.25221/fee.437.2
0385878DFFD1FFF22ED2FA6FFD0C3B5F.taxon	description	Figs 1, 2	en	Rasnitsyn, A. P., Aristov, D. S. (2021): New species of the genus Blattinopsis Giebel, 1867 (Insecta: Blattinopsida: Blattinopsidae) from the Permian of Taimyr Peninsula, Russia. Far Eastern Entomologist 437: 6-9, DOI: 10.25221/fee.437.2, URL: http://dx.doi.org/10.25221/fee.437.2
0385878DFFD1FFF22ED2FA6FFD0C3B5F.taxon	materials_examined	MATERIAL. Holotype PIN, № 2013 / 1, negative imprint of incomplete and somewhat deformed forewing; Russia: Krasnoyarsky krai, Taimyrsky Dolgano-Nenetsky District, Fokina River, outcrop 10, sample 2036, Fokina locality; Lower Permian, upper Kungurian Stage, Burgukli Horizon; collected by A. B. Gurevich, 1961; kept at the Paleontological Institute, Russian Academy of Sciences, Moscow (PIN). 1 – forewing; 2 – reconstruction of forewing.	en	Rasnitsyn, A. P., Aristov, D. S. (2021): New species of the genus Blattinopsis Giebel, 1867 (Insecta: Blattinopsida: Blattinopsidae) from the Permian of Taimyr Peninsula, Russia. Far Eastern Entomologist 437: 6-9, DOI: 10.25221/fee.437.2, URL: http://dx.doi.org/10.25221/fee.437.2
0385878DFFD1FFF22ED2FA6FFD0C3B5F.taxon	description	DESCRIPTION. Large insect. Forewing fore margin convex. Costal space at RS base a little narrower than subcostal space. SC reaching just after wing midlength, with dense, thin, simple and Y-like fore branchlets. R S-like bending behind SC apex, with dense, thin, simple fore branchlets. RS base in wing basal quarter, starting with the only stalk, regularly backward pectinate, with 11 or more main branches. M branching from after wing midlength, with two or more branches. CuA branching since near its midlength, behind M 5 apex, with fore branch dividing into two or more branches and hind one with four or more branches forming backward comb. А 1 simple, А 2 with four main branches. Crossveins dense, simple or, in distal wing half, forming cell rows, or else with dense archediction distally in interradial space and behind A 2. No longitudinal folds between main veins. MEASUREMENTS. Forewing fragment length 28 мм, full wing length probably about 40 mm. COMPARISON. New species is assigned to Blattinopsis based on dense crossveins and absence of longitudinal folds between main veins, as opposed to crossveins rare (if at all) and folds present in the other constituent genus Glaphyrophlebia (Kukalová, 1959, 1965; Carpenter, 1966; Müller, 1977; Hörnschemeyer & Stapf, 2001). New species is most similar to B. kukalovae Carpenter, 1966 from the lower Kungurian fossil locality Elmo (Leonardian Stage of Kansas, USA) in having the only stem RS. It differs from latter species in having RS forming regular hind comb and in larger wing size, while B. kukalovae has RS branching irregularly and wing size some 22 mm long (Carpenter, 1966).	en	Rasnitsyn, A. P., Aristov, D. S. (2021): New species of the genus Blattinopsis Giebel, 1867 (Insecta: Blattinopsida: Blattinopsidae) from the Permian of Taimyr Peninsula, Russia. Far Eastern Entomologist 437: 6-9, DOI: 10.25221/fee.437.2, URL: http://dx.doi.org/10.25221/fee.437.2
0385878DFFD1FFF22ED2FA6FFD0C3B5F.taxon	etymology	ETYMOLOGY. From Latin indefinitus (indefinite).	en	Rasnitsyn, A. P., Aristov, D. S. (2021): New species of the genus Blattinopsis Giebel, 1867 (Insecta: Blattinopsida: Blattinopsidae) from the Permian of Taimyr Peninsula, Russia. Far Eastern Entomologist 437: 6-9, DOI: 10.25221/fee.437.2, URL: http://dx.doi.org/10.25221/fee.437.2
