Amboroppia andensis, Ermilov & Subías & Shtanchaeva & Friedrich, 2022

Ermilov, Sergey G., Subías, Luis S., Shtanchaeva, Umukusum Ya. & Friedrich, Stefan, 2022, A new species of Amboroppia (Acari, Oribatida, Oppiidae) from the Peruvian Andes, with remarks on generic diagnosis, Persian Journal of Acarology 11, pp. 439-446 : 440-444

Amboroppia andensis sp. nov. ( Figs. 1–10)

Diagnosis

Body length 614–680. Teeth of rostrum well separated. Relative length of prodorsal setae: in ˃ ro ˃ le = ex; all setae setiform, barbed; le inserted on costular-transcostular complex. Bothridial seta very long, sparsely barbed, slightly dilated mediodistally. Notogastral seta c similar in length to le and ex; other notogastral setae comparatively long; all setae setiform, sparsely barbed. Epimeral and anogenital setae setiform, sparsely barbed.

Description

Measurements – Body length: 614 (holotype, female), 614–680 (11 paratypes, six males and five females); notogaster width: 348 (holotype), 348–415 (11 paratypes). No difference between males and females in body size.

Integument – Body color light brown. Body surface microporose (visible only under high magnification in dissected specimen, × 1500). Dorsal and lateral (between bothridium and acetabula I, II) parts of prodorsum partially tuberculate (diameter of tubercle up to 6).

Prodorsum – Rostrum of typical form, tripartite; median and lateral teeth well separated. Costula, transcostula and transverse ridge behind them forming unclear ring-like or trapezoid structure. Elongate concavity between rostrum and transcostula well developed. Rostral (57–61), lamellar (32–36), interlamellar (65–69), and exobothridial (32–36) setae setiform, barbed; le and ex thinner than ro and in; le inserted on costular-transcostular complex. Bothridial seta (184–192) with indistinct, narrowly elongate dilatation in mediodistal part, sparsely barbed. Some pairs of interbothridial muscle sigillae present but poorly observed. Lateral prodorsal carina strong, arch-like.

Notogaster – Anterior border convex medially. Seta c (32–36) setiform, sparsely barbed; others (102–114) thicker, barbed; often majority setae broken. Opisthonotal gland opening and all notogastral lyrifissures distinct; ip located posterior to p 1.

Gnathosoma – Subcapitulum size: 127–135 × 90–98. All subcapitular setae (a: 28–32; m: 36– 41; h: 49–53) setiform, sparsely barbed; adoral seta (10–12) setiform, thin, smooth. Chelicera (123– 131) with two setiform, barbed setae (cha: 36–41; chb: 20–24). Palp (77–82) with typical setation 0– 2–1–3–9(+1ω). Postpalpal seta (8) spiniform, roughened.

Epimeral and lateral podosomal regions – Epimeral border IV well developed, slightly semioval. With typical epimeral setal formula 3–1–3–3; all epimeral setae (1a, 2a, 3a: 28–32; 1b, 1c, 3b: 49–53; 3c, 4a, 4c: 65–73; 4b: 41–45) setiform, sparsely barbed; 3c inserted on tubercle. Discidium slightly developed, rounded distally.

Anogenital region – Genital (g 1: 45–49; g 2, g 3, g 5: 32–36; g 4: 20–24; g 6: 36–41), aggenital (57– 61), adanal (57–61), and anal (32–36) setae setiform, sparsely barbed. Adanal lyrifissure distinct, located at level of insertion of anal seta an 1. Ovipositor is typical for Oppiidae ( Ermilov 2010) , elongated (159 × 32), each of the three blades (49) shorter than length of distal section (beyond middle fold; 110), with four rod-like, smooth setae (ψ 1 ≈ τ 1: 32; ψ 2 ≈ τa ≈ τb ≈ τc: 24); six coronal setae not observed.

Legs – Leg IV obviously longer than legs I–III. Claw of all legs roughened on dorsal side. Trochanter III with two or three posterior teeth. All femora with large ventral porose area. Formulas of leg setation and solenidia: I (1-5-2-4-20) [1-2-2], II (1-5-2-4-16) [1-1-2], 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 short, slightly swollen distally, erect, smooth, inserted close and posterolateral to solenidion ω 1. Solenidia ω 1 of tarsus I, ω 1 and ω 2 of tarsus II and σ of genu III medium-sized, slightly bacilliform; φ 2 of tibia I and ω 2 of tarsus I medium-sized, rod-like; others long, setiform; often solenidia broken.

Remarks

Amboroppia andensis sp. nov. differs from the type species ( A. bayartogtokhi ) by the larger body size (length: 614–680 versus 398–415), the structure of the rostrum (three rostral teeth well separated versus touching tightly), and the localization and length of lamellar seta (located on costulartranscostular complex versus located before costular-transcostular complex; similar in length to exobothridial seta and notogastral seta c versus distinctly longer than exobothridial seta and notogastral seta c).

Type material

Holotype (female) and 11 paratypes (six males and five females): South America, Central Peru, Andes , 09° 42' 58'' S, 75° 05' 33'' W, Huánuco Department , Huánuco Province, Chinchao District , NW Tunel de Carpish , 2770 m a.s.l., upper soil and leaf litter in primary mountain forest, Winkler extraction, 14.IV.2016 (S. Friedrich, F. Wachtel and D. Hauth).

Type deposition

The holotype is deposited in the collection of the Museo de Historia Natural , Universidad Nacional Mayor de San Marcos, Lima, Peru ; 11 paratypes are deposited in the collection of the Tyumen State University Museum of Zoology , Tyumen, Russia .

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