A new subgenus and three new species of Sternoppia (Acari, Oribatida, Sternoppiidae) from Peru Author Ermilov, Sergey G. 0000-0002-0913-131X Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, Tyumen, Russia. ermilovacari @ yandex. ru; https: // orcid. org / 0000 - 0002 - 0913 - 131 X ermilovacari@yandex.ru Author Subías, Luis S. Complutense University, Madrid, Spain. Author Shtanchaeva, Umukusum Ya. Complutense University, Madrid, Spain. Author Friedrich, Stefan 0000-0002-1668-4633 SNSB-Bavarian State Collection of Zoology, Munich, Germany. friedrich @ snsb. de; https: // orcid. org / 0000 - 0002 - 1668 - 4633 * Corresponding author friedrich@snsb.de text Zootaxa 2022 2022-10-13 5195 4 373 384 journal article 164415 10.11646/zootaxa.5195.4.4 d997e0a2-a9a8-46b9-9081-5b54a67e2df7 1175-5326 7193052 1F4AB72C-4223-42ED-A8B3-FF3B475DDCFF Sternoppia ( Sternoppia ) americaensis sp. nov. ( Fig. 4 ) Diagnosis. Body length: 465–525. Rostral, lamellar and interlamellar setae setiform, barbed; bothridial seta, setiform, unilaterally with furcate cilia. All notogastral setae setiform, smooth; la , lm and lp medium-sized, others short; lm located anteromedially to la . Length of overlapping epimeral plates longer than length of genital plate. Epimeral and anogenital setae setiform, sparsely ciliated (except 3a densely ciliated); insertions of 3a close to each other. Description of adult . Measurements . Body length: 510 ( holotype : male), 465–525 ( 10 paratypes : three males and seven females ); notogaster width: 285 ( holotype ), 270–315 ( 10 paratypes ). No difference between males and females in body size. Integument . Body color brown. Body surface mostly finely granulate (visible under high magnification); lateral side of body between bothridium and acetabula I–II densely tuberculate (diameter of tubercle up to 2); epimeres I, II with sparse tubercles (diameter of tubercle up to 2). Prodorsum . Costula and postcostular tubercle well developed. Rostrum rounded. Rostral, lamellar and interlamellar setae (52–56) setiform, barbed; exobothridial seta (41) setiform, roughened; bothridial seta (135–146) setiform, unilaterally with three to five furcate cilia. Postbothridial tubercle slightly developed. Notogaster . Humeral tubercle not observed. Ten pairs of notogastral setae ( c : 26–30; la : 56–60; lm , lp : 67– 71; h 1 – h 3 , p 1 – p 3 : 34–37) present; all setiform, smooth; lm located anteromedially to la . Lyrifissures ia , im , ip and opisthonotal gland opening slightly visible, ih and ips not observed. Gnathosoma . Similar to S. ( A. ) tetratuberculata , except sizes. Subcapitulum: 112–116 × 64–67; a : 22–26; m : 41–49; h : 67–75; palp: 71; postpalpal seta: 9; chelicera: 101–105; cha : 30; chb : 19–22. Epimeral and lateral podosomal regions . Anterior part of epimeral plates overlapping, forming small tectum; length of overlapping plates longer than length of genital plate. Medial and lateral tubercles on epimere I absent. Seta 3a (60–67) densely ciliated; other setae ( 1a , 2a , 4b : 60–75; 1b , 3b , 3c , 4a , 4b , 4c : 67–79; 1c : 82–94) setiform, sparsely ciliated; insertion of 1c located close to anterior margin of pedotectum I; insertions of 3a close to each other. Discidium subtriangular. Anogenital region . Genital ( g 1 , g 4 : 41–45; g 2 , g 3 : 34–37; g 5 , g 6 : 22–26), aggenital (45–49), anal (26–30), and adanal (41–45) setae setiform, sparsely ciliated. Adanal lyrifissure close and parallel to anal plate. Legs . Identical to S. ( A. ) tetratuberculata . Type material. Holotype (male) and 10 paratypes ( three males and seven females ): South America , Central Peru , Andes , 09°54'30''S , 76°03'48''W , Huánuco Department , Pachitea Province , Molino District , W Molino, Monte Potrero , 2850–3100 m a.s.l. , upper soil and leaf litter in primary mountain cloud forest, Winkler extraction, 15– 17.IV.2016 ( S. Friedrich , F. Wachtel and D. Hauth ). FIGURE 4. Sternoppia ( Sternoppia ) americaensis sp. nov. , adult: A—dorsal view (legs not shown); B—ventral view (gnathosoma and legs not shown). Scale bar 100 μm. The holotype is deposited in the Museo de Historia Natural , Universidad Nacional Mayor de San Marcos , Lima , Peru ; 10 paratypes are deposited in the Tyumen State University Museum of Zoology , Tyumen , Russia . Remarks. Sternoppia americaensis sp. nov. is similar to S. brasiliensis Franklin & Woas, 1992 in having setiform bothridial seta bearing bifurcate cilia and medium-sized notogastral setae la , lm , lp . However, the new species can be distinguished from the latter by the larger body size (length: 465–525 versus 290), notogastral setae la , lm , lp longer (versus similar in length) than other notogastral setae, and the presence (versus represented by alveolus) of notogastral seta c and sparse tubercles on epimeres I, II. Etymology. The species name refers to the place of origin, South America.