Luisumaoppia molinoensis, Ermilov, 2022

Ermilov, Sergey G., 2022, Luisumaoppia molinoensis gen. nov., sp. nov. (Acari, Oribatida, Oppiidae) from Peru, Zootaxa 5105 (1), pp. 131-138 : 132-136

Luisumaoppia molinoensis sp. nov.

( Figs 1–3 )

Diagnosis. As for genus. Body length: 415–464. Rostral and lamellar setae long, setiform, barbed; ro ˃ le. Bothridial seta nearly globular, barbed. Interbothridial region with three pairs of muscle sigillae. Notogastral seta c minute, needle-form; la and lm very long, flagellate, with small swollen apically, barbed; other notogastral setae short, setiform, slightly stiff, barbed. Epimeral and anogenital setae setiform, barbed. Discidium subtriangular.

Description of adult. Measurements. Body length: 431 (holotype: female), 415–464 (nine paratypes: three males and six females); notogaster width: 232 (holotype), 215–249 (nine paratypes). No difference between males and females in body size.

Integument. Body color light brown. Body surface mostly smooth, but lateral sides between bothridium and acetabula I-III tuberculate (diameter of tubercle up to 4).

Prodorsum. Rostrum broadly rounded. Rostral (57–61), lamellar (45–49) and exobothridial (24) setae setiform, barbed; ro thickest, ex thinnest. Bothridial seta (45–53) with slightly elongate head (nearly globular), barbed. Interbothridial region with three pairs of muscle sigillae. Interbothridial and postbothridial tubercles absent, but slight postbothridial thickenings sometimes visible. Longitudinal row, comprising several muscle sigillae, present in front of the bothridium.

Notogaster. Anterior border convex medially. Notogastral seta c (2–4) needle-form, smooth; la and lm (278– 298) flagellate, with small swollen apically, barbed; other setae (20–24) setiform, slightly stiff, barbed. Lyrifissure ip not observed; other lyrifissures and opisthonotal gland opening distinct.

Gnathosoma . Subcapitulum size: 94–102 × 73–77. All subcapitular setae (a: 20; m: 36–45; h: 41–49) setiform, barbed. Adoral seta (8) setiform, roughened. Palp length: 69–77. Postpalpal seta (6) spiniform, smooth. Chelicera length: 90–98. Cheliceral seta cha (22–24) dorsally ciliate; chb (20) setiform, barbed. Antiaxial side of chelicera with three diagonal ridges.

Epimeral and lateral podosomal regions. All epimeral setae (1a, 2a, 3a: 14–16; 1c: 20–24; 1b, 3b, 3c, 4a: 57–61; 4b, 4c: 45–49) setiform, barbed; majority of them located on tubercles. Discidium subtriangular.

Anogenital region. Genital (g 1, g 2: 14–16; others: 30–36), aggenital (45–49), adanal (ad 1: 20–24; others: 32–36), and anal (32–36) setae setiform, barbed. Adanal lyrifissure distinct.

Legs. All claws slightly barbed on dorsal side. Porose area on femora I–IV and on trochanters III, IV not observed. Formulas of leg setation and solenidia: I (1-5-2-4-20) [1-2-2], II (1-5-2-4-15) [1-1-1], III (2-3-1-3-15) [1-1- 0], IV (1-2-2-3-12) [0-1-0]; homology of setae and solenidia indicated in Table 1 . Famulus of tarsus I erect, slightly swollen and blunted distally, inserted posterior to solenidion ω 1. Seta pv” on tarsus IV brush-like.

Type material. Holotype (female) and nine paratypes (three males and six females): South America, Peru, Andes, 0954’30’’S, 7603’48’’W, Huánuco Department , Pachitea Province , Molino District , 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).

The holotype is deposited in the Museo de Historia Natural , Universidad Nacional Mayor de San Marcos, Lima, Peru ; nine paratypes are deposited in the Tyumen State University Museum of Zoology , Tyumen, Russia .

Etymology. The species name refers to the place of origin, Molino District.

Figures

FIGURE 1. Luisumaoppia molinoensis sp. nov., adult (legs not shown): A—dorsal view; B—ventral view; C—right lateral view. Scale bar 100 μm.

FIGURE 2. Luisumaoppia molinoensis sp. nov., adult (some solenidia and setae on legs broken): A—subcapitulum, ventral view; B—palp, left, paraxial view; C—chelicera, right, antiaxial view; D—leg I, without trochanter, left, paraxial view; E—leg II, without trochanter, left, antiaxial view; F—leg III, right, paraxial view (trochanter, femur and genu turned); G—leg IV, left, paraxial view. Scale bars 50 μm (D–G), 20 μm (A, C), 10 μm (B).

FIGURE 3. Luisumaoppia molinoensis sp. nov., adult, photo images: A—part of prodorsum, left dorsolateral view; B—notogastral seta h3; C—leg claw II.