Luisumaoppia, Ermilov, 2022

Ermilov, Sergey G., 2022, Luisumaoppia molinoensis gen. nov., sp. nov. (Acari, Oribatida, Oppiidae) from Peru, Zootaxa 5105 (1), pp. 131-138 : 132

Genus Luisumaoppia gen. nov.

Type species: Luisumaoppia molinoensis sp. nov.

Generic diagnosis (adult). With character states of Oppiinae (Subías & Balogh 1989; Balogh & Balogh 1992). Sexual species with distinct dimorphism absent. Size. Length about 410–470. Integument. Surface without heavy sculpturing and ornamentation. Prodorsum. Rostrum rounded. Costula, transcostula, lateral carina, and interbothridial tubercle absent. Interbothridial region with muscle sigillae. Rostral and lamellar setae well developed, setiform; interlamellar seta absent. Bothridial seta comparatively short, nearly globular. Notogaster. Without humeral tooth and crista. Nine pairs of setiform setae including c; dorsomedial notogastral part without setae; c minute; lp absent; two dorsal pairs very long, others comparatively short. Gnathosoma . Subcapitulum diarthric. Adoral seta present. Palp setation: 0-2-1-3-9(+1 ω). Palp solenidion short, swollen apically, located in distal part of tarsus. Chelicera chelate-dentate. Epimeral and lateral podosomal regions. Epimeral border IV present. Epimeral setal formula: 3-1-3-3; all setae setiform. Ventrosejugal tubercle absent. Pedotectum I represented by small lamina. Discidium developed. Anogenital region. Five pairs of genital, one pair of aggenital, two pairs of anal, and three pairs of adanal setae, all setae setiform. Adanal seta ad 1 posterior, ad 2 lateral, ad 3 anterolateral to anal plate, distance between ad 3 – ad 3 longer than ag–ag and ad 2 – ad 2. Adanal lyrifissure close and parallel to anal aperture. Legs. All leg pretarsi bent, bearing modified (nearly straight), directed backwards claw. Tarsus I with 20 setae (l” and v’ present); tarsus II with 15 setae (l” absent); tarsus II with one solenidion.

Etymology. The generic name is derived from the names of my friends and colleagues Luis S. Subías and Umukusum (Uma) Ya. Shtanchaeva, the acarologists from the Universidad Complutense de Madrid, Madrid, Spain + ‘ oppia ’, a common suffix for generic names in Oppiidae .

Remarks. The new genus differs from the other genera of the family Oppiidae by the combination of the following main character states: costular-transcostular complex and interlamellar seta absent; bothridial seta comparatively short, nearly globular; nine pairs of setiform notogastral setae present including minute c (lp absent), of these, two pairs of dorsal setae (la and lm) very long and in several times longer than other setae; five pairs of genital setae; adanal seta ad 1 located posterior to anal aperture; adanal lyrifissure close and parallel to anal plate; all leg pretarsi bent, bearing modified (nearly straight) claw. See “Discussion” section below.